Presentation of POPS-OFDM at King Abdullah University of Science and Technology (KAUST). Systematic waveform optimization for 5G applications and services. Rectangular and hexagonal/Quincunx time and frequency lattices. Unequal waveform durations at the transmitter and the receiver. Robustness to synchronization errors and misalignment in time and frequency.
A Survey on Key Technology Trends for 5G NetworksCPqD
The document discusses key technology trends for 5G networks, including higher spectrum usage through technologies like carrier aggregation and operation in millimeter wave bands. It also covers multi-Gbps transmission rates using new waveforms, massive MIMO arrays, and highly dense and flexible network architectures utilizing small cells and network function virtualization. The conclusion is that 5G networks will be driven by data traffic growth and enable ubiquitous services, but further work is still needed to support innovative services in both urban and rural areas.
An introduction to 5G technology through the evolution of mobile networks: from 1G to 5G. The presentation provides basic information about each generation of mobile network: features, limitations, basic radio technologies and algorithms behind each generation.
The document provides an overview of 5G technology. It discusses how 5G networks will be able to handle 10,000 times more call and data traffic than 4G and have data download speeds several hundred times faster than 4G. It also outlines the evolution from 1G to 5G mobile networks and compares key features. The architecture of 5G is explained, including the radio access network and 5G nanocore. Functional aspects like quality of service classes and reference points are also summarized.
5G is the fifth generation cellular network technology. The industry association 3GPP defines any system using "5G NR" (5G New Radio) software as "5G", a definition that came into general use by late 2018. Others may reserve the term for systems that meet the requirements of the ITU IMT-2020. 3GPP will submit their 5G NR to the ITU.[1] It follows 2G, 3G and 4G and their respective associated technologies (such as GSM, UMTS, LTE, LTE Advanced Pro and others).
This document provides an overview of Long Term Evolution (LTE) wireless communication technology. It explains that LTE is an evolution of previous GSM/UMTS standards aimed at increasing wireless data network capacity and speed. Key points are:
- LTE uses OFDMA for downlink and SC-FDMA for uplink transmission. It supports flexible bandwidths from 1.4 to 20 MHz.
- LTE has a simplified IP-based network architecture compared to 3G, with reduced latency.
- LTE-Advanced further improves LTE, integrating networks and meeting 4G requirements. It allows for higher data speeds compared to WiMAX and previous LTE.
Millimeter Wave mobile communications for 5g cellularraghubraghu
The next generation of wireless mobile communication is here know as 5G cellular which will revolutionize the way which see at wireless communication today !!!
Focusing on the physical layer of the 5G network, new methodologies, new problems facing the network and solutions for each problem.
topics are:-
Channel Models, Channel Coding, Multiple Access, Smart Antenna, Massive MIMO & Beamforming, Network Architecture, Frame structure & Numerology
addition: exploring the new trends that might be done in the future
UK Spectrum Policy Forum - Barry Lewis, Samsung - 5G Mobile Communications fo...techUK
5G mobile communications aims to provide ultra-fast data transmission rates over 50 Gbps, ubiquitous connectivity for over 80 billion devices, and end-to-end latency less than 5 ms. Key enabling technologies include new spectrum bands above 6 GHz, advanced antenna techniques like massive MIMO and beamforming, and new network architectures like software-defined networking. Recent research has demonstrated 7.5 Gbps peak data rates using 28 GHz spectrum and 1.2 Gbps speeds at highway speeds. Global research initiatives are underway to develop 5G standards and technologies for commercialization around 2020.
A Survey on Key Technology Trends for 5G NetworksCPqD
The document discusses key technology trends for 5G networks, including higher spectrum usage through technologies like carrier aggregation and operation in millimeter wave bands. It also covers multi-Gbps transmission rates using new waveforms, massive MIMO arrays, and highly dense and flexible network architectures utilizing small cells and network function virtualization. The conclusion is that 5G networks will be driven by data traffic growth and enable ubiquitous services, but further work is still needed to support innovative services in both urban and rural areas.
An introduction to 5G technology through the evolution of mobile networks: from 1G to 5G. The presentation provides basic information about each generation of mobile network: features, limitations, basic radio technologies and algorithms behind each generation.
The document provides an overview of 5G technology. It discusses how 5G networks will be able to handle 10,000 times more call and data traffic than 4G and have data download speeds several hundred times faster than 4G. It also outlines the evolution from 1G to 5G mobile networks and compares key features. The architecture of 5G is explained, including the radio access network and 5G nanocore. Functional aspects like quality of service classes and reference points are also summarized.
5G is the fifth generation cellular network technology. The industry association 3GPP defines any system using "5G NR" (5G New Radio) software as "5G", a definition that came into general use by late 2018. Others may reserve the term for systems that meet the requirements of the ITU IMT-2020. 3GPP will submit their 5G NR to the ITU.[1] It follows 2G, 3G and 4G and their respective associated technologies (such as GSM, UMTS, LTE, LTE Advanced Pro and others).
This document provides an overview of Long Term Evolution (LTE) wireless communication technology. It explains that LTE is an evolution of previous GSM/UMTS standards aimed at increasing wireless data network capacity and speed. Key points are:
- LTE uses OFDMA for downlink and SC-FDMA for uplink transmission. It supports flexible bandwidths from 1.4 to 20 MHz.
- LTE has a simplified IP-based network architecture compared to 3G, with reduced latency.
- LTE-Advanced further improves LTE, integrating networks and meeting 4G requirements. It allows for higher data speeds compared to WiMAX and previous LTE.
Millimeter Wave mobile communications for 5g cellularraghubraghu
The next generation of wireless mobile communication is here know as 5G cellular which will revolutionize the way which see at wireless communication today !!!
Focusing on the physical layer of the 5G network, new methodologies, new problems facing the network and solutions for each problem.
topics are:-
Channel Models, Channel Coding, Multiple Access, Smart Antenna, Massive MIMO & Beamforming, Network Architecture, Frame structure & Numerology
addition: exploring the new trends that might be done in the future
UK Spectrum Policy Forum - Barry Lewis, Samsung - 5G Mobile Communications fo...techUK
5G mobile communications aims to provide ultra-fast data transmission rates over 50 Gbps, ubiquitous connectivity for over 80 billion devices, and end-to-end latency less than 5 ms. Key enabling technologies include new spectrum bands above 6 GHz, advanced antenna techniques like massive MIMO and beamforming, and new network architectures like software-defined networking. Recent research has demonstrated 7.5 Gbps peak data rates using 28 GHz spectrum and 1.2 Gbps speeds at highway speeds. Global research initiatives are underway to develop 5G standards and technologies for commercialization around 2020.
Objective is to include the brief insight on 5G network architecture and standard progress, Accumulated it from different paper/journal, vendor’s white paper and different blog.
3GPP finalized Release 16 in 2020 and initiated work on Release 17, which expands 5G capabilities like multi-cast and non-terrestrial networks. Release 17 provides a framework for innovation in new use cases. Future wireless networks will need to support new use cases and a wide range of spectrum bands using artificial intelligence integrated in the network. Presentation slides covered 5G connections forecasts, 3GPP release timelines, main features of Release 16 like IIoT and URLLC, and technologies in Release 17 like integrated access and backhaul.
5G networks will require new architectures and algorithms to achieve the high speeds and low latencies required. Massive MIMO with hundreds of antennas enables high-gain beamforming through narrow beams. Hybrid beamforming partitions beamforming between digital and RF domains to reduce costs. Behavioral simulation allows evaluation of antenna array and algorithm interactions to optimize performance.
4G refers to fourth-generation wireless which aims to provide faster data speeds and more capabilities than 3G. 4G LTE and 4G LTE Advanced are competing 4G standards. 4G LTE aims to provide speeds up to 10 times faster than 3G, while 4G LTE Advanced, standardized in 2011, is an enhancement that provides even higher speeds and more advanced technologies. The key difference is that 4G LTE Advanced supports newer technologies for higher performance compared to 4G LTE.
This document provides an introduction to 5G technology, including:
- 5G aims to meet growing connectivity needs and fulfill diverse use cases such as drones, augmented reality, and the Internet of Things.
- 5G standards are being developed by 3GPP and ITU, with 3GPP specifying the radio technology beyond LTE known as New Radio (NR).
- 5G requirements defined by 3GPP include high peak data rates, low latency, high reliability, large connection densities, and support for high mobility.
Making 5G New Radio a Reality - by QualcommAydin Karaer
Qualcomm is developing 5G NR technology to enable a unified 5G air interface that can address diverse spectrum types, services, and deployments. 5G will transform industries and society by connecting billions of devices and delivering new immersive experiences with requirements such as ultra-low latency and ultra-high reliability. Qualcomm is leading innovations for 5G NR such as advanced channel coding, massive MIMO, and mobilizing mmWave to achieve the speed, capacity, and low latency goals of 5G over the next decade.
Tonex offers a 2-day training course on 5G New Radio (NR) for $1,999. The course provides an in-depth overview of 5G NR specifications, architectures, protocols and technologies based on 3GPP standards. It covers physical layer features, radio access network architecture, and protocols for the 5G air interface. Hands-on workshops enable learning of practical 5G NR procedures and validation methods. Tonex has 30 years of experience providing training to Fortune 500 companies to help them understand and apply complex wireless technologies.
Qualcomm is developing 5G NR technology to enable a unified 5G air interface that can address diverse spectrum types, services, and deployments. 5G will transform industries and society by connecting billions of devices and delivering new immersive experiences with requirements such as ultra-low latency and ultra-high reliability. Qualcomm is leading innovations for 5G NR such as optimized waveforms, scalable numerology and transmission time interval, efficient spectrum utilization techniques, and support for diverse spectrum bands and deployments.
The document discusses 4G mobile communications standards including WiMAX and LTE. It provides information on:
- IEEE 802.22 which uses white spaces in TV frequencies for wireless regional area networks.
- Requirements for 4G standards defined by ITU including peak speeds of 1Gbps.
- How early versions of Mobile WiMAX and LTE did not meet the full 4G requirements but were still branded as 4G.
- Mobile WiMAX Release 2 and LTE Advanced promising speeds of 1Gbps in 2013.
Andy sutton - Multi-RAT mobile backhaul for Het-Netshmatthews1
At our 5th Telecoms Evangelist meet up Andy Sutton of EE gave a fantastic presentation reviewing the latest trends and developments in mobile backhaul architecture, strategy and technology. Starting with a review of backhaul capacity, performance requirements and protocol architecture, the presentation initially focused on the macro cell layer before going on to discuss options for evolving towards a true multi-layered heterogeneous network. Take a look!
Designing The Architecture Of 5-G Network Using ROF MINOR1(i)Parth Saxena
This document discusses using radio over fiber (RoF) architecture for 5G networks. It motivates the use of RoF technology to provide wired-like connectivity with high mobility. The introduction explains RoF technology and its basic components. Wireless networks can be implemented using RoF by transmitting radio frequency signals over optical fiber to remote antenna units. There are several challenges to address in developing a RoF system for 5G, including designing and evaluating a preliminary RoF architecture, determining optimal cell size, and studying different modulation schemes. The timeline outlines work to be done in the current and next semesters to address these challenges. So far, basic RoF architecture has been implemented in simulation software to learn the tools.
This document provides an overview of millimeter wave (mmWave) communications for 5G wireless networks, with a focus on propagation models. It discusses key concepts of 5G including the use of mmWave spectrum to provide multi-Gbps data rates. The document compares propagation parameters and channel models from various standardization bodies in the 0.5-100 GHz range. It summarizes recent work on measurements and models of path loss, penetration loss, and more for 5G mmWave channels across different scenarios.
This document provides an overview of 5G networks including:
- 5G aims to deliver data rates of up to 10 Gbps, 100 Mbps in urban areas, and coverage everywhere with massive device connectivity and reduced power consumption.
- 5G will utilize spectrum from sub-1 GHz to 100 GHz including millimeter wave bands and enable new use cases across industries.
- Standardization is expected to begin in 2016 with commercial launches starting in 2020. Major players are conducting trials and collaborating globally to develop 5G technologies and architectures.
5G refers to the fifth generation of wireless technology and was recently introduced in 2019. 6G is the proposed sixth generation that is still in early research and aims to integrate advanced features to improve upon 5G. Key differences include 6G supporting higher data rates up to 1 Tbps, lower latency under 1 ms, and exploring new spectrum in the THz and optical bands. While 5G networks have begun deployment, 6G research is ongoing to develop technologies like holographic communication and integrate AI.
Ericsson Technology Review – Microwave backhaul gets a boost with multibandEricsson
With the exception of Northeast Asia, 65 percent of all cell sites will be connected to the rest of the network using microwave backhaul technology by 2020. Between now and then, the performance of microwave backhaul will continue to improve, supporting growing capacity needs through technology evolution and more efficient use of spectrum. So as the dominant backhaul media in modern networks, the ability of microwave to carry traffic plays a significant role in providing good mobile network performance.
Technology evolution, increased mobility, and massive digitalization continue to place ever more demanding performance requirements on networks. The constant pressure to increase performance translates into a need for more spectrum, and more efficient use of it – not just when it comes to radio access, but for microwave backhaul as well.
But spectrum is a finite natural resource, so technology developments not only need to be able to make use of higher frequencies, they also need to unleash the potential of all the untapped spectrum that exists.
Radio-link bonding is a well-established method for enhancing peak capacity, enabling multiple radio carriers to be aggregated into a single virtual one. So far, developments have focused on bonding carriers within the same frequency band. The multiband booster concept, however, uses radio-link bonding to aggregate carriers in different frequency bands, enabling the full spectrum potential to be unleashed.
This document discusses Long Term Evolution (LTE) as the 4G mobile broadband technology. It provides key specifications of LTE including peak download speeds of 173Mb/s, ultra-low latency below 100ms, support for up to 400 active users per 5MHz of spectrum, and mobility at speeds up to 450km/h. It also compares LTE to WiMAX and discusses options for allocating LTE spectrum in Iraq, including re-allocating the existing 40MHz improperly assigned band to improve spectrum efficiency.
This tutorial has been designed for audiences with a need to understand the LTE technology basics in very simple terms. This tutorial will give you enough understanding on LTE technology from where you can take yourself at higher level of expertise.
This document discusses next generation wireless access beyond 5G. It notes that LTE has been very successful but demand for mobile data is increasing rapidly. New opportunities exist in areas like vehicles, smart homes/cities, healthcare and factories. However, a key challenge is projected spectrum may not meet demand. The document discusses potential technologies for next generation wireless including millimeter wave spectrum, massive MIMO, new waveforms, flexible frame structures and network architectures. The goal is to support higher data rates everywhere with more efficient use of resources and support for new services and low latency applications. Standardization of next generation wireless is planned to start in 2016.
Lecture boğaziçi üniversitesi 2016 presentation - offline ping-pong optimiz...Mohamed Siala
Application of ping-pong optimized pulse shaping (POPS) to the offline optimization of the 5G radio interface. Waveform optimization for rectangular as well as hexagonal/quincunx time-frequency lattices. Waveform optimization for different waveform durations at the transmit and receive sides. Discussion on the concept of optimized codebooks of pairs of waveforms, to pave the way for the introduction of Adaptive Waveform Communications (AWC) in 5G.
The document discusses key technology enablers for 5G networks, including 5G radio, ultra dense heterogeneous networks, mobile edge computing, network function virtualization, software defined networking, network slicing, and internet of things. The objectives of 5G include supporting peak data rates of 10Gbps, guaranteed rates of 50Mbps, latency of 1ms for radio access and 5ms end-to-end, high mobility up to 500km/hr, location accuracy of less than a meter, and connectivity for over 1 million devices per square kilometer. 5G aims to enable a wide range of new applications through these advanced capabilities.
Objective is to include the brief insight on 5G network architecture and standard progress, Accumulated it from different paper/journal, vendor’s white paper and different blog.
3GPP finalized Release 16 in 2020 and initiated work on Release 17, which expands 5G capabilities like multi-cast and non-terrestrial networks. Release 17 provides a framework for innovation in new use cases. Future wireless networks will need to support new use cases and a wide range of spectrum bands using artificial intelligence integrated in the network. Presentation slides covered 5G connections forecasts, 3GPP release timelines, main features of Release 16 like IIoT and URLLC, and technologies in Release 17 like integrated access and backhaul.
5G networks will require new architectures and algorithms to achieve the high speeds and low latencies required. Massive MIMO with hundreds of antennas enables high-gain beamforming through narrow beams. Hybrid beamforming partitions beamforming between digital and RF domains to reduce costs. Behavioral simulation allows evaluation of antenna array and algorithm interactions to optimize performance.
4G refers to fourth-generation wireless which aims to provide faster data speeds and more capabilities than 3G. 4G LTE and 4G LTE Advanced are competing 4G standards. 4G LTE aims to provide speeds up to 10 times faster than 3G, while 4G LTE Advanced, standardized in 2011, is an enhancement that provides even higher speeds and more advanced technologies. The key difference is that 4G LTE Advanced supports newer technologies for higher performance compared to 4G LTE.
This document provides an introduction to 5G technology, including:
- 5G aims to meet growing connectivity needs and fulfill diverse use cases such as drones, augmented reality, and the Internet of Things.
- 5G standards are being developed by 3GPP and ITU, with 3GPP specifying the radio technology beyond LTE known as New Radio (NR).
- 5G requirements defined by 3GPP include high peak data rates, low latency, high reliability, large connection densities, and support for high mobility.
Making 5G New Radio a Reality - by QualcommAydin Karaer
Qualcomm is developing 5G NR technology to enable a unified 5G air interface that can address diverse spectrum types, services, and deployments. 5G will transform industries and society by connecting billions of devices and delivering new immersive experiences with requirements such as ultra-low latency and ultra-high reliability. Qualcomm is leading innovations for 5G NR such as advanced channel coding, massive MIMO, and mobilizing mmWave to achieve the speed, capacity, and low latency goals of 5G over the next decade.
Tonex offers a 2-day training course on 5G New Radio (NR) for $1,999. The course provides an in-depth overview of 5G NR specifications, architectures, protocols and technologies based on 3GPP standards. It covers physical layer features, radio access network architecture, and protocols for the 5G air interface. Hands-on workshops enable learning of practical 5G NR procedures and validation methods. Tonex has 30 years of experience providing training to Fortune 500 companies to help them understand and apply complex wireless technologies.
Qualcomm is developing 5G NR technology to enable a unified 5G air interface that can address diverse spectrum types, services, and deployments. 5G will transform industries and society by connecting billions of devices and delivering new immersive experiences with requirements such as ultra-low latency and ultra-high reliability. Qualcomm is leading innovations for 5G NR such as optimized waveforms, scalable numerology and transmission time interval, efficient spectrum utilization techniques, and support for diverse spectrum bands and deployments.
The document discusses 4G mobile communications standards including WiMAX and LTE. It provides information on:
- IEEE 802.22 which uses white spaces in TV frequencies for wireless regional area networks.
- Requirements for 4G standards defined by ITU including peak speeds of 1Gbps.
- How early versions of Mobile WiMAX and LTE did not meet the full 4G requirements but were still branded as 4G.
- Mobile WiMAX Release 2 and LTE Advanced promising speeds of 1Gbps in 2013.
Andy sutton - Multi-RAT mobile backhaul for Het-Netshmatthews1
At our 5th Telecoms Evangelist meet up Andy Sutton of EE gave a fantastic presentation reviewing the latest trends and developments in mobile backhaul architecture, strategy and technology. Starting with a review of backhaul capacity, performance requirements and protocol architecture, the presentation initially focused on the macro cell layer before going on to discuss options for evolving towards a true multi-layered heterogeneous network. Take a look!
Designing The Architecture Of 5-G Network Using ROF MINOR1(i)Parth Saxena
This document discusses using radio over fiber (RoF) architecture for 5G networks. It motivates the use of RoF technology to provide wired-like connectivity with high mobility. The introduction explains RoF technology and its basic components. Wireless networks can be implemented using RoF by transmitting radio frequency signals over optical fiber to remote antenna units. There are several challenges to address in developing a RoF system for 5G, including designing and evaluating a preliminary RoF architecture, determining optimal cell size, and studying different modulation schemes. The timeline outlines work to be done in the current and next semesters to address these challenges. So far, basic RoF architecture has been implemented in simulation software to learn the tools.
This document provides an overview of millimeter wave (mmWave) communications for 5G wireless networks, with a focus on propagation models. It discusses key concepts of 5G including the use of mmWave spectrum to provide multi-Gbps data rates. The document compares propagation parameters and channel models from various standardization bodies in the 0.5-100 GHz range. It summarizes recent work on measurements and models of path loss, penetration loss, and more for 5G mmWave channels across different scenarios.
This document provides an overview of 5G networks including:
- 5G aims to deliver data rates of up to 10 Gbps, 100 Mbps in urban areas, and coverage everywhere with massive device connectivity and reduced power consumption.
- 5G will utilize spectrum from sub-1 GHz to 100 GHz including millimeter wave bands and enable new use cases across industries.
- Standardization is expected to begin in 2016 with commercial launches starting in 2020. Major players are conducting trials and collaborating globally to develop 5G technologies and architectures.
5G refers to the fifth generation of wireless technology and was recently introduced in 2019. 6G is the proposed sixth generation that is still in early research and aims to integrate advanced features to improve upon 5G. Key differences include 6G supporting higher data rates up to 1 Tbps, lower latency under 1 ms, and exploring new spectrum in the THz and optical bands. While 5G networks have begun deployment, 6G research is ongoing to develop technologies like holographic communication and integrate AI.
Ericsson Technology Review – Microwave backhaul gets a boost with multibandEricsson
With the exception of Northeast Asia, 65 percent of all cell sites will be connected to the rest of the network using microwave backhaul technology by 2020. Between now and then, the performance of microwave backhaul will continue to improve, supporting growing capacity needs through technology evolution and more efficient use of spectrum. So as the dominant backhaul media in modern networks, the ability of microwave to carry traffic plays a significant role in providing good mobile network performance.
Technology evolution, increased mobility, and massive digitalization continue to place ever more demanding performance requirements on networks. The constant pressure to increase performance translates into a need for more spectrum, and more efficient use of it – not just when it comes to radio access, but for microwave backhaul as well.
But spectrum is a finite natural resource, so technology developments not only need to be able to make use of higher frequencies, they also need to unleash the potential of all the untapped spectrum that exists.
Radio-link bonding is a well-established method for enhancing peak capacity, enabling multiple radio carriers to be aggregated into a single virtual one. So far, developments have focused on bonding carriers within the same frequency band. The multiband booster concept, however, uses radio-link bonding to aggregate carriers in different frequency bands, enabling the full spectrum potential to be unleashed.
This document discusses Long Term Evolution (LTE) as the 4G mobile broadband technology. It provides key specifications of LTE including peak download speeds of 173Mb/s, ultra-low latency below 100ms, support for up to 400 active users per 5MHz of spectrum, and mobility at speeds up to 450km/h. It also compares LTE to WiMAX and discusses options for allocating LTE spectrum in Iraq, including re-allocating the existing 40MHz improperly assigned band to improve spectrum efficiency.
This tutorial has been designed for audiences with a need to understand the LTE technology basics in very simple terms. This tutorial will give you enough understanding on LTE technology from where you can take yourself at higher level of expertise.
This document discusses next generation wireless access beyond 5G. It notes that LTE has been very successful but demand for mobile data is increasing rapidly. New opportunities exist in areas like vehicles, smart homes/cities, healthcare and factories. However, a key challenge is projected spectrum may not meet demand. The document discusses potential technologies for next generation wireless including millimeter wave spectrum, massive MIMO, new waveforms, flexible frame structures and network architectures. The goal is to support higher data rates everywhere with more efficient use of resources and support for new services and low latency applications. Standardization of next generation wireless is planned to start in 2016.
Lecture boğaziçi üniversitesi 2016 presentation - offline ping-pong optimiz...Mohamed Siala
Application of ping-pong optimized pulse shaping (POPS) to the offline optimization of the 5G radio interface. Waveform optimization for rectangular as well as hexagonal/quincunx time-frequency lattices. Waveform optimization for different waveform durations at the transmit and receive sides. Discussion on the concept of optimized codebooks of pairs of waveforms, to pave the way for the introduction of Adaptive Waveform Communications (AWC) in 5G.
The document discusses key technology enablers for 5G networks, including 5G radio, ultra dense heterogeneous networks, mobile edge computing, network function virtualization, software defined networking, network slicing, and internet of things. The objectives of 5G include supporting peak data rates of 10Gbps, guaranteed rates of 50Mbps, latency of 1ms for radio access and 5ms end-to-end, high mobility up to 500km/hr, location accuracy of less than a meter, and connectivity for over 1 million devices per square kilometer. 5G aims to enable a wide range of new applications through these advanced capabilities.
Interesting Whitepaper from #HCLTECH, though a bit old (2016) but good for beginners on 5G and introductory know-how about 5G start with IMT2020. Informative insights.
This document discusses 5G technology and Non-Orthogonal Multiple Access (NOMA). It provides an overview of 5G, describing how 5G will enable higher data rates and bandwidth. NOMA is introduced as an emerging technology for 5G that uses power multiplexing to serve multiple users on the same time and frequency resources, providing higher spectral efficiency and lower latency compared to previous orthogonal multiple access techniques. The advantages of NOMA include higher throughput, massive connectivity, lower latency and improved quality of service. Potential applications discussed include supporting increased device connectivity for areas like the Internet of Things.
10-Gb/S Transmission of Wdm Pon for Man with 50km Reach Based On FtthIJERA Editor
The wavelength-division-multiplexed passive optical network (WDM-PON) is considered to be the next evolutionary solution for a simplified and future-proofed access system that can accommodate exponential traffic growth and bandwidth-hungry new applications. WDM-PON mitigates the complicated time-sharing and power budget issues in time division- multiplexed PON (TDM-PON) by providing virtual point-to-point optical connectivity to multiple end users through a dedicated pair of wavelengths. The objective of this paper is proposed a scheme for metropolitan area networks comprising optical components based on arrayed waveguide grating multiplexers, demultiplexers .The Arrayed waveguide gratings based multiplexers and demultiplexers for WDM applications prove to be capable of precise multiplexing and demultiplexing of a large number of channels with relatively low losses.
ANALYSIS AND REDUCTION OF TIMING JITTER USING HYBRID OFDM - DFMA PONSIRJET Journal
This document discusses using hybrid OFDM-DFMA PONs (orthogonal frequency division multiplexing—digital filter multiple access passive optical networks) to analyze and reduce timing jitter. It begins with background on OFDM communication systems and how they split bandwidth into smaller sub-bands using IFFT (Inverse Fast Fourier Transform) to reduce intersymbol interference. The document then presents the proposed system, which applies modulation, uses IFFT to convert signals to the time domain, and uses ICCSP (identical code cyclic shifted prefix) for parallel to serial conversion to obtain the channel signal. It discusses channel estimation and uses an AWGN (additive white Gaussian noise) channel model to introduce noise. The goal is to reduce timing jitter effects using
IRJET- Survey Paper on Performance Evaluation of 5G WiMAX (IEEE 802.16) Syste...IRJET Journal
This document provides a survey of research on evaluating the performance of 5G WiMAX (IEEE 802.16) systems using space time block coding techniques. It first introduces WiMAX and MIMO-OFDM technologies. It then discusses the IEEE 802.16 reference model and describes the use of orthogonal frequency division multiplexing and its advantages. The document also explains space time block coding and how it can achieve transmit diversity. Finally, it concludes that WiMAX-OFDM using space time block coding can operate with lower transmit power over longer distances while tolerating more interference.
Evolution of millimeter-wave communications toward next generation in wireles...TELKOMNIKA JOURNAL
Next generation in wireless communication systems being deployed in the world, 5G/6G
mobile and wireless communication technologies has been widely studied. This work clarifies that
Millimeter-Wave (mm-Wave) is in its early stages and will be driven by consumers who keep on desire
higher information rates for the consumption of media. Millimeter-Wave innovation represents for next
generation cellular technology and includes a wide range of advanced features which make next
innovation most dominant technology in near future, these abilities incorporate high achievable information
rates in addition to lower delays and constant connectivity on wireless devices.
A simulation study of wi max based communication system using deliberately cl...eSAT Journals
This document summarizes a study on reducing peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems using deliberate clipping. It begins with an introduction to WiMAX technology and OFDM. It then discusses the PAPR problem in OFDM systems and different techniques to reduce PAPR, including signal scrambling and signal distortion methods. It focuses on deliberate clipping as a simple method to limit PAPR by distorting the signal before amplification. The document presents a simulation of an OFDM system using deliberate clipping at the Nyquist sampling rate to investigate its effect on bit error rate performance compared to an unclipped system.
A simulation study of wi max based communication system using deliberately cl...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Rapid developments in modern wireless communication permit the trade of spectrum scarcity. Higher data rate and wider bandwidth emerge the development in growing demand of wireless communication system. The innovative solution for the spectrum scarcity is cognitive radio (CR). Cognitive radio is the significant technology used to utilize the spectrum effectively. The important aspect of CR is sensing the spectrum band and detects the presence or absence of the primary user in the licensed band. Moreover, another serious issue in next generation (5G) wireless communication is to decide the less complex 5G waveform candidate for achieving higher data rate, low latency and better spectral efficiency. Universal filtered multi-carrier (UFMC) is one of the noticeable waveform candidates for 5G and its applications. In this article, we investigate the spectrum sensing methods in multi-carrier transmission for cognitive radio network applications. Especially, we integrate the sensing algorithm into UFMC transceiver to analyze the spectral efficiency, higher data rates and system complexity. Through the simulation results, we prove that the UFMC based cognitive radio applications outperform the existing Orthogonal Frequency Division Multiplexing (OFDM) based CR applications.
The document discusses ad hoc and sensor networks. It provides sample questions and answers related to various topics in this area. Some key points covered include:
- Characteristics of wireless channels include path loss, fading, interference, Doppler shift, and transmission rate constraints.
- Shannon's theorem states the maximum possible data rate on a noisy channel as a function of bandwidth and signal-to-noise ratio.
- An ad hoc network is a decentralized type of wireless network without any fixed infrastructure. It is suitable for situations where a wired network cannot be setup.
- Challenging issues in ad hoc network maintenance include medium access, routing, multicasting, transport layer protocols, pricing schemes, and quality of service
IRJET - Comparative Study of Rural Macrocell (RMA) and Urban Macrocell (U...IRJET Journal
This document provides a comparative study of rural macrocell (RMa) and urban macrocell (UMa) propagations for millimeter wave 5G cellular networks. It analyzes the performance of RMa and UMa based on their power delay profiles (PDP) for specific frequencies between 16-82 GHz. The study is done for line of sight communication. Simulations are performed using the NYUSIM software which uses MATLAB. Parameters like pathloss, pathloss exponent, and received power are used to measure performance. The results show characteristic curves for each frequency band in both RMa and UMa propagations. The outcomes are compared to determine the most effective frequency bands for 5G cellular communication based on propagation type.
Article on MIMO-OFDM printed in BSNL telecom JournalSushil Kumar
The document summarizes MIMO-OFDM technology for high-speed wireless communication. It describes that MIMO uses multiple antennas at the transmitter and receiver to minimize errors and optimize data speed. It can increase channel capacity while obeying Shannon's law. OFDM divides data into small sub-signals transmitted through different frequencies using IFFT and FFT. Combining MIMO with OFDM provides higher throughput and link reliability. Industry standards like 802.11n, 802.16a, LTE/LTE Advanced have adopted MIMO-OFDM to achieve data rates up to 1Gbps.
The document discusses the evolution of 3GPP's Long Term Evolution (LTE) radio technology and System Architecture Evolution (SAE). It describes the initial feasibility study in 2004 to develop a high-data-rate, low-latency packet-optimized radio access technology. Key requirements were identified for peak data rates, latency, capacity, throughput, spectrum efficiency, mobility, and more. Radio interface options were evaluated, leading to the selection of OFDM for the downlink and SC-FDMA for the uplink. The evolved UTRAN architecture was defined consisting of eNBs interconnected by the X2 interface.
Read other blog posts by the author, Zahid Ghadialy, here: https://communities.cisco.com/people/ZahidGhadialy/content
For more discussions and topics around SP Mobility, please visit our Mobility Community: http://cisco.com/go/mobilitycommunity
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For more information on 5G technologies, use cases and timelines, please visit us at www.qualcomm.com/5G.
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1. 1
POPS-OFDM:
Ping-Pong Optimized Pulse Shaping OFDM for
5G Cellular Systems and Beyond
Mohamed Siala
MEDIATRON Laboratory
Higher School of Communication of Tunis (SUP’COM)
King Abdullah University of Science and Technology (KAUST)
Thuwal - Makkah Province - Kingdom of Saudi Arabia
October 18, 2015
2. Outline
Motivation of Research Activities on Pulse Shaping for 5G
OFDM/OFDMA
5G Challenges and Requirements
POPS-OFDM to Systematically Respond to 5G Radio Interface
Challenges
Conclusion and Perspectives for Future Research Work on 5G
2
6. 4G (LTE-A) Pitfalls
LTE is tailored to maximize performance by enforcing strict
synchronism and perfect orthogonality
Machine-type communication (MTC) requires bulky procedures to
ensure strict synchronism
Collaborative schemes (e.g. CoMP) use tremendous efforts to
collect gains under strict synchronism and orthogonality
Digital Agenda/Carrier aggregation forces systems to deal with
fragmented spectrum
6
7. Need for Non-Orthogonal Waveforms
Non-orthogonal waveforms on the physical layer will enable:
Asynchronous MTC traffic with drastically reduced signalling and
increased life time
The provision of asynchronous coordinated multi-point (CoMP) /
Heterogeneous Networking (HetNet)
Implementation of asynchronous carrier aggregation concepts with
well frequency localization
A (filtered) multicarrier approach will enable:
The mix of synchronous/asynchronous and orthogonal/non-
orthogonal traffic types
The aggregation of non-contiguous spectrum thanks to low out-of-
band emissions of the non-orthogonal waveforms
7
8. Workload of Current Mobiles
8
Outer receiver consists of channel decoder and de-interleaver
9. Projects on 5G
From 2007 to 2013, the European Union set aside €700 million of
funding (FP7) for research on future networks, half of which was
reserved for wireless technologies and the development of 4G and
beyond-4G technologies.
METIS, 5GNOW, iJOIN, TROPIC, Mobile Cloud Networking,
COMBO, MOTO and PHYLAWS are some of the latest EU research
projects that address the architecture and functionality needs of 5G
networks, representing some €50 million EU investment.
European Union’s FP7 project, PHYDYAS (Duration: 30 months,
Start: January 2008, End: October 2010, Total Cost: 4 093 483€),
investigated Filter Bank Multi-Carrier (FBMC) and corresponding
transceiver functionalities.
9
10. 5GNOW Candidate Waveforms
European Union’s FP7 projects, 5GNOW (5th Generation Non-
Orthogonal Waveforms for Asynchronous Signaling), (Start:
September 2012, End: February 2015, Total Cost: 3 526 991 €),
investigated 4 candidate waveforms:
Generalized Frequency Division Multiplexing (GFDM)
Universal Filtered Multicarrier (UFMC)
Filter Bank Multi-Carrier (FBMC)
Bi-orthogonal Frequency Division Multiplexing (BFDM)
10
14. Requirements for 5G: Coordinated MultiPoint
(CoMP)
Joint Processing (JP):
Coordination between multiple BSs
MSs are simultaneously transmitting or receiving to or from
multiple BSs
Coordinated Scheduling/Coordinated Beamforming (CS/CB):
Coordination between multiple BSs
MSs are transmitting or receiving to or from a single transmission
or reception BS
14
15. Requirements for 5G: Coordinated MultiPoint
(CoMP) – Overlapping in Time
15
time
At the BSs
MS2MS1
time
TDOA Overlapping in time
Artificial delay spread
Inter-Symbol Interference
At MS2
time
At MS1
TDOA: Time Difference of Arrival
Applicable even for fully
time synchronous BSs
16. Requirements for 5G: Coordinated MultiPoint
(CoMP) – Overlapping in Frequency
16
MS
frequency
Carrier Frequency Offset
Overlapping in frequency Artificial Doppler spread
Inter-Carrier Interference (ICI)
At MS
From BS1
frequency
frequency
From BS2
From BS3
Applicable only for non fully
frequency Synchronous BSs
17. Requirements for 4G, 5G and DVB-T: MBMS
and SFN
17
Overlapping replicas Artificial delay spread Interference
time
At the BSs/DVB-T TV Station
time
At the TV Set
(SFN)
At the MS
(MBMS)
SFN: Single Frequency
Network
MBMS: Multimedia Broadcast
Multicast Service
18. Requirements for 5G: Sporadic Traffic and Fast
Dormancy 1/4
2, 3 and 4G systems continuously transmit reference signals and
broadcast system information that is used by terminals as they move
across cells
The more signaling the cellular standard requires, the more complex
and power-hungry will be the devices
With denser deployment and more network nodes (MTC), such
“always-on” transmissions are not attractive from an interference and
energy consumption perspective
Maximizing the devices’ sleep opportunities, through sporadic
access, minimizes energy consumption, leading to long battery life
18
19. Requirements for 5G: Sporadic Traffic and Fast
Dormancy 2/4
Sporadic access poses a significant challenge to mobile access
networks due to fast dormancy:
Fast dormancy is used to save battery power: The mobile breaks
ties to the network as soon as a data piece is delivered
When the mobile has to deliver more pieces of data it will always
go through the complete synchronization procedure again
This can happen several hundred times a day, resulting in
significant control signaling growth and network congestion threat
It is desirable to achieve “zero-overhead” communications by
providing channel access with minimal signaling
19
20. Requirements for 5G: Sporadic Traffic and Fast
Dormancy 3/4
Get rid of closed-loop timing control (which costs energy and
signaling overhead, being undesirable for MTC) and use open loop
timing control mechanisms: The device uses the downlink pilot signals
by the BS for a rough synchronization (RSSI: Received Signal
Strength Indication)
20
21. Requirements for 5G: Sporadic Traffic and Fast
Dormancy 4/4
21Nokia Siemens Networks, Understanding Smartphone Behavior in the Network,
White Paper, 2011, [Available: http://www.nokiasiemensnetworks.com/sites/default/files
Comparisons of Data and Signaling Traffic
22. Requirements for 5G: Sporadic Traffic and Fast
Dormancy – Relaxed Frequency Synchronization
22
MS2
Reduced synchronization overhead
Relaxed frequency synchronization
Carrier Frequency Offset
Overlapping in frequency
Inter-user interference in frequency
From MS1
frequency
MS1
MS3
frequency
From MS2
frequency
From MS3
At BS
frequency
Inter-user interference
Unaligned carrier frequencies
23. Requirements for 5G: Sporadic Traffic and Fast
Dormancy – Relaxed Time Synchronization
23
MS2
Reduced synchronization overhead
Relaxed time synchronization
Overlapping in time
Inter-user interference in time
MS1
From MS1
time
time
From MS2
At BS
time
Inter-user interference
24. Requirements for 5G: Asynchronous Signaling in
the Uplink – RACH 1/2
24
MS2MS1
RACH random access
25. Requirements for 5G: Asynchronous Signaling in
the Uplink – RACH 2/2
25
time
No synchronization overhead Strong overlapping in time
Inter-user interference in time
To/from BS
time
To/from MS1
To/from MS2
Inter-Burst interference
time
Synchronization
channel
RACH burst
from MS2
RACH burst
from MS1
Propagation
delay to MS1
Propagation
delay to MS2
26. Requirements for 5G: Spectrum Agility and
Carrier Aggregation 1/2
TV White Spaces (TVWS) exploration can represent a new niche
markets if it overcomes, with spectrum agility, the rigorous
implementation requirements of low out of band radiations for
protection of legacy systems
The LTE-A waveform imposes generous guard bands to satisfy
spectral mask requirements which either severely deteriorate spectral
efficiency or even prevent band usage
5G will address carrier aggregation by implementing non-orthogonal
waveforms, with low out-of-band emissions, in order not to interfere
with other legacy systems and conform to tight spectral masks
26
27. Requirements for 5G: Spectrum Agility and
Carrier Aggregation 2/2
27
OFDM vs. ESM: Loss of efficiency of traditional OFDM to fit in an ESM
(Emission Spectrum Mask) due to its non-negligible side lobes
55 dB protection
28. Requirements for 5G: Low Latency 1/2
4G offers latencies of multiple 10 ms between terminal and BS that
originate from resource scheduling, frame processing, retransmission
procedures, and so on.
The access latency offered by LTE is not sufficient for latency-critical
applications, such as tactile internet (motivated by the tactile sense of
the human body, which can distinguish latencies on the order of 1 ms
accuracy), traffic safety and infrastructure protection.
To ensure support for such mission-critical MTC applications, next-
generation wireless access should allow for latencies on the order of 1
ms or less.
28
29. Requirements for 5G: Low Latency 2/2
A 1 ms round-trip time for a typical tactile interaction requires a time
budget of maximum 100 µs on the physical layer
Far shorter than LTE-A allows, missing the target by nearly two
orders of magnitude
Clear motivation for an innovative and disruptive redesign of
the PHY layer
Lower latency over the radio link can be achieved by reducing
transmission-time intervals and widening the bandwidth of radio
resource blocks in which a specific amount of data is transmitted
29
30. Requirements for 5G: Lower Latency vs Doppler
Spread-Delay Spread Balancing 1/2
30
Time
F
T
Frequency
Doppler shift
Time delayDB
mT
Reduced global ICI+ISI
Good balancing between T and F
Increased Latency
ICI
ICI
ISIISI
Processing
Time at the Rx2
mT
min
Contribution of the PHY to the latency
31. Requirements for 5G: Lower Latency vs Doppler
Spread-Delay Spread Balancing 2/2
31
Time
F
T
Frequency
Doppler shift
Time
delay
DB
mT
Decreased Latency
Bad balancing between
T and F
Increased global
ICI+ISI
ISIISI
Processing
Time at the Rx
2
mTmin
Contribution of the PHY to the latency
ICI
ICI
34. 33φ32φ31φ30φ
23φ22φ21φ20φ
13φ12φ11φ10φ
OFDM Time-Frequency Lattice: Transmitter
Side
Time
Frequency
Signal
00 φ φ 01φ 02φ 03φ
Time Shift by TTime Shift by 2TTime Shift by 3T
Frequency
Shift by F
Frequency
Shift by 2F
Frequency
Shift by 3F
Symbol Period T
=
Symbol Spacing
Symbol Bandwidth F = Subcarrier Spacing
: Transmitter Prototype Waveformφ
mnφ
Subcarrier Index Symbol Index
Frequency shift of by mF Time shift of by nT
34
35. 30 30a φ
20 20a φ
10 10a φ
00 00a φ
1
0 0
0
Q
m m
m
a
φ
OFDM Transmitted Signal
Time
Frequency
Signal
21 21a φ
11 11a φ
01 01a φ
31 31a φ
1
1 1
0
Q
m m
m
a
φ
1
0
: Sampled Version of the Transmitted OFDM Signal
Q
mn mn
n m
a
e φ
1
2 2
0
Q
m m
m
a
φ
32 32a φ
22 22a φ
12 12a φ
02 02a φ
1
3 3
0
Q
m m
m
a
φ
33 33a φ
23 23a φ
13 13a φ
03 03a φ
SubcarriersQ
35
36. Propagation Channel Characteristics: Delay and
Doppler Spreads
Mobile speed
( , )S p
p
dB : Doppler spread
Doppler spread spectrum
: Discrete time delay
: Doppler frequency shift
( , )S p : Channel scattering function
: Discrete time delay spreadmT 36
37. 30 30a φ
20 20a φ
10 10a φ
00 00a φ
1
0 0
0
Q
m m
m
a
φ
OFDM Received Signal
Time
Frequency
Signal
1
0
: Sampled Version of the Received OFDM Signal
Q
mn mn
n m
a
r φ n
21 21a φ
11 11a φ
01 01a φ
31 31a φ
1
1 1
0
Q
m m
m
a
φ
: Additive White Gaussian Noisen
: Channel distorted version ofmn mnφ φ
37
ISIICI
38. Decision variables
: Receiver Prototype Waveform (Vector)ψ
klψ
Subcarrier Index Symbol Index
Frequency shift of by kF Time shift of by lT
H
kl kl ψ r : Decision variable on kla
( , ) ( , ) Noise TermUseful Term
Interference Term
H H H
kl kl kl kl mn kl mn kl
m n k l
a a
ψ φ ψ φ ψ n
38
39. Signal-to-Interference and Noise Ratio (SINR)
S
I N
P
SINR
P P
: Average power of the Useful Term
: Average power of the Interference Term
: Average power of the Noise Term
S
I
N
P
P
P
( , )
( , )
1
H
S p
H
S p
SINR
SNR
φ
φ
ψ KS ψ
ψ KI I ψ
: Ratio of two definite positive quadratic
forms on for a given
( , )
( , )
1
H
S p
H
S p
SINR
SNR
ψ
ψ
φ KS φ
φ KI I φ
: Ratio of two definite positive quadratic
forms on for a given
0
: Signal to Noise Ratio
E
SNR
N
39
40. Ping-pong Optimization Philosophy 1/2
Transmitter Side Receiver Side(0)
φ
(0)
(0)
( , )
( , )
Maximize
1
H
S p
H
S p
SINR
SNR
φ
φ
ψ KS ψ
ψ KI I ψ (0)
ψ
(0)
(0)
( , )
( , )
Maximize
1
H
S p
H
S p
SINR
SNR
ψ
ψ
φ KS φ
φ KI I φ
(1)
φ
(1)
(1)
( , )
( , )
Maximize
1
H
S p
H
S p
SINR
SNR
φ
φ
ψ KS ψ
ψ KI I ψ (1)
ψ
(1)
(1)
( , )
( , )
Maximize
1
H
S p
H
S p
SINR
SNR
ψ
ψ
φ KS φ
φ KI I φ
(2)
φ 40
42. First Optimization Technique
SINR
0
ψ
( , ) ( , )
1
S p S p
SINR
φ φ
KI ψ KS ψ
Generalized Eigenvalue Problem
Find the eigenvector with the smallest eigenvalue
SINR
0
φ
( , ) ( , )
1
S p S p
SINR
ψ ψ
KI φ KS φ
42
43. Second Optimization Technique
( , )
( , )
H
S p
H
S p
SINR
φ
φ
ψ KS ψ
ψ KIN ψ
( , )
H
S p φ
KIN UΛU
: Unitary Matrix
: Diagonal Positive Matrix
U
Λ
( , )
H H H H
S p φ
ψ KIN ψ ψ UΛU ψ u u 1/2 H
u Λ U ψ
H
H
SINR
u Φu
u u
1/2 1/2
( , )
H
S p
φ
Φ Λ U KS UΛ
maxFind the eigenvector of with maximum eigenvalueu Φ
1/2
max
1/2
max
opt
UΛ u
ψ
UΛ u
43
44. Signal and Interference Kernel Computation
1/3
1
( , )
0
( )k
K
H
S p nN k p
n k
φ
K Σ Σ φφ Ω
0 ( ( )) if ( )mod 0
0 else
D s
pq
QJ B T p q p q Q
1
0 ( , )
0
( )k
K
H
S p k p
k
φ
K Σ φφ Π
0 ( ( ))pq D sJ B T p q
( , ) 0 ( , )S p S p φ φ
KS K ( , ) ( , ) 0 ( , )S p S p S p φ φ φ
KI K K
Π Q Ω
Dependence on channel Doppler (Computed once)
DN Q
44
45. Signal and Interference Kernel Computation
2/3
φ H
φφ
1
0
( )k
K
H
k p
k
Σ φφ
Duration: DT
DN samples
45
Matrix shifts according to
the multipath power profile
46. Signal and Interference Kernel Computation
3/3
Matrix shifts according to
the normalized symbol duration N
46
1
0
( )k
K
H
nN k p
n k
Σ Σ φφ
47. Numerical Results: Impact of Initialization and
Existence of Local Maxima
47
Local maxima
Conjecture to
be the global
maximum
48. Numerical Results: Evolution of Transmit and
Receive Pulse Shapes Through the Iterations
48
Iterations: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,…,20,…,30,…,100
φ ψ
Initialization: Gaussian pulse
61. Staggered (Hexagonal/Quincunx) Time-
Frequency Lattice 2/9
1
0 ( , )
0
( )k
K
H
S p k p
k
φ
K Σ φφ Π
0 ( ( ))pq D sJ B T p q
Π
Dependence on channel Doppler for the 0th Kernel
DN
61
62. Staggered (Hexagonal/Quincunx) Time-
Frequency Lattice 3/9
1 1
( , ) /2
0 0
( ) ( )k k
K K
H even H odd
S p nN k p nN N k p
n k n k
φ
K Σ Σ φφ Ω Σ Σ φφ Ω
0 ( ( )) if ( )mod 0
2 2
0 else
even D s
pq
Q Q
J B T p q p q
Dependence on channel Doppler for the infinite kernel 62
0
0
( ( )) if ( )mod 0
2
( ( )) if ( )mod
2 2
0 else
D s
odd
pq D s
Q
J B T p q p q Q
Q Q
J B T p q p q Q
63. Staggered (Hexagonal/Quincunx) Time-
Frequency Lattice 4/9
2
even Q
Ω
Dependence on channel Doppler for the infinite kernel
/ 2Q
63
2
odd Q
Ω
/ 2Q
Even carrier contribution mask Odd carrier contribution mask
64. Staggered (Hexagonal/Quincunx) Time-
Frequency Lattice 5/9
64
1
0
( )k
K
H
nN k p
n k
Σ Σ φφ
1
/2
0
( )k
K
H
nN N k p
n k
Σ Σ φφ
Selection on which is
based kernel computation
Even carrier contribution
Odd carrier contribution
75. SINR Kernal Characteristics and Consequences
1/4
75
( , ) ( , )
( , ) ( , )
1 1
H H
S p S p
H H
S p S p
SNR SNR
ψφ
ψφ
ψ KS ψ φ KS φ
ψ KI I ψ φ KI I φ
Time reverse of φ
Time reverse of ψ
76. SINR Kernal Characteristics and Consequences
2/4
76
φ ψ φψ
In terms of noise correlation at the receiver
φ ψ φψ
In terms of SINR
Not always equivalent
77. SINR Kernal Characteristics and Consequences
3/4
77
PC
Timeφ
ψ Time
CP-OFDM
Timeφ
ψ Time
ZP-OFDM
ZP
Only in terms of SINR
Time
reversing
CP-OFDM and ZP-OFDM are duals of each other
78. SINR Kernal Characteristics and Consequences
4/4
78
If the optimum couple (, ), maximizing the SINR, is unique, then
ψ φ
80. Conclusion
We proposed a new and straightforward technique for the
systematic optimization of transmit and receive waveforms
for OFDM/FBMC systems
Increased SINR
6 orders of magnitude reduction in out-of-band emissions
Robustness to synchronization errors
80
81. Perspectives
Extension to OFDM/OQAM
Extension to multi-pulse OFDM/QAM and OFDM/OQAM
Extension to single-carrier communications
Extension to underwater acoustic communications
OFDM pulse shapes optimized for partial equalization
OFDM tolerant to communications with relaxed synchronization
OFDM pulse shapes optimized for carrier aggregation and reduced
out-of band emissions
OFDM pulse shapes optimized very low latencies
Optimization of RADAR pulses
Active participation to 5G standardization (3GPP RAN-L1) ???
81
82. 82
Thank You for Your Attention!
Mohamed Siala
MEDIATRON Laboratory
Higher School of Communication of Tunis (SUP’COM)
King Abdullah University of Science and Technology (KAUST)
Thuwal - Makkah Province - Kingdom of Saudi Arabia
October 18, 2015
83. References 1/4
M. Siala, T. Kurt, and A. Yongaçoglu, “Orthonormalization for Multi-Carrier Transmission,”
Canadian Workshop on Information Theory 2005 (CWIT’05), Montreal, Quebec, Canada, June 2005.
T. Kurt, M. Siala, and A. Yongaçoglu, “Multi-Carrier Signal Shaping Employing Hermite
Functions,” European Signal Processing Conference 2005 (EUSIPCO’05), Antalya, Turkey,
September 2005.
N. Debbabi, M. Siala, and H. Boujemâa, “Optimization of the OFDM Prototype Waveform for
Highly Time and Frequency Dispersive Channels Through a Maximization of the SIR,” 12th
IEEE International Conference on Electronics, Circuits and Systems 2005 (ICECS’05), Gammarth,
Tunisia, December 2005.
A. Ben Salem, M. Siala, and H. Boujemâa, “Performance Comparison of OFDM and
OFDM/OQAM Systems Operating in Highly Time and Frequency Dispersive Radio-Mobile
Channels,” 12th IEEE International Conference on Electronics, Circuits and Systems 2005
(ICECS’05), Gammarth, Tunisia, December 2005.
M. Siala, T. Kurt, and A. Yongaçoglu, “A Unified Framework for the Construction of
OFDM/OQAM Systems,” 12th IEEE International Conference on Electronics, Circuits and Systems
2005 (ICECS’05), Gammarth, Tunisia, December 2005.
83
84. References 2/4
A. Ben Salem, M. Siala, and H. Boujemâa, “OFDM systems with hexagonal time-frequency
lattices and well time frequency localized prototype functions,” Third International Symposium
on Image/Video Communications over fixed and mobile networks 2006 (ISIVC’06), Hammamet,
Tunisia, September 2006.
M. Siala, “Novel OFDM/OQAM system with hexagonal time-frequency lattice,” Third
International Symposium on Image/Video Communications over fixed and mobile networks
(ISIVC’06), Hammamet, Tunisia, September 2006.
I. Trigui, M. Siala, and H. Boujemâa, “Optimized pulse shaping for OFDM multi-user
communications over doubly dispersive channels,” 9th International Symposium on Signal
Processing and its Applications (ISSPA’07), Sharjah, United Arab Emirates, February 2007.
M. Siala and A. Yongaçoglu, “Prototype waveform optimization for an OFDM/OQAM system
with hexagonal time-frequency lattice structure,” 9th International Symposium on Signal
Processing and its Applications (ISSPA’07), Sharjah, United Arab Emirates, February 2007.
I. Trigui, M. Siala, S. Affes and A. Stephenne, “SIR Optimized Hermite-Based Pulses for BFDM
Systems in Doubly Dispersive Channels,” International Symposium on Signals, Systems and
Electronics (ISSSE’07), Montreal, Quebec, Canada, July 2007.
84
85. References 3/4
R. Ayadi, I. Kammoun, and M. Siala, “Optimization of the pulse shape of OFDM systems Using
the Arrow-Hurwicz Algorithm,” 4th International Symposium on Wireless Communication
Systems (ISWCS’07), Trondheim, Norway, October 2007.
R. Ayadi, M. Siala, and I. Kammoun, “Transmit/receive pulse-shaping design in BFDM systems
over time-frequency dispersive AWGN channel,” IEEE International Conference on Signal
Processing and Communications (ICSPC’07), Dubai, United Arab Emirates, November 2007.
I. Trigui, M. Siala, S. Affes, A. Stephenne, and H. Boujemaa, “Optimum Pulse Shaping for
OFDM/BFDM Systems Operating in Time Varying Multi-Path Channels,” IEEE Global
Telecommunications Conference (GLOBECOM’07), Washington DC, USA, November 2007.
M. Bellili, M. Siala, and L. Ben Hadj Slama, “Pulse design for maximizing SIR in partially
equalized OFDM/BFDM systems,” IEEE 19th International Symposium on Personal, Indoor and
Mobile Radio Communications (PIMRC’08), Cannes, France, September 2008.
M. Bellili, L. Ben Hadj Slama, and M. Siala, “Multi-pulse/single-pulse design for maximizing SIR
in partially equalized OFDM systems over highly dispersive channels,” 16th IEEE International
Conference on Electronics, Circuits, and Systems, 2009 (ICECS 2009), Hammamet, Tunisia,
December 2009.
85
86. References 4/4
R. Ayadi, I. Kammoun, and M. Siala, “Optimal OFDM Pulse Design, Analysis and
Implementation Over Doubly Dispersive Channel,” 21st European Signal Processing Conference
(EUSIPCO 2013), Marrakech, Morocco, September 9-13, 2013.
M. Siala, F. Abdelkefi and Z. Hraiech, “Novel Algorithms for Optimal Waveforms Design in
Multicarrier Systems,” IEEE Wireless Communications and Networking Conference
(WCNC’2014), Istanbul, Turkey, April 2014.
Z. Hraiech, M. Siala, and F. Abdelkefi, “Numerical Characterization for Optimal Designed
Waveform to Multicarrier Systems in 5G,” 22nd European Signal Processing Conference 2014
(EUSIPCO 2014), Lisbon, Portugal, 1-5 September 2014.
Z. Hraiech, F. Abdelkefi, and M. Siala, “POPS-OFDM: Ping-pong Optimized Pulse Shaping-
OFDM for 5G systems,” accepted at IEEE International Conference on Communications (ICC’15),
London, UK, June 2015.
Z. Hraiech, F. Abdelkefi, and M. Siala, “POPS-OFDM: Ping-pong Optimized Pulse Shaping-
OFDM for 5G systems,” Accepted at IEEE Vehicular Technology Conference – Spring 2015
(VTC’S15), Glasgow, Scotland, May 2015.
Z. Hraiech, F. Abdelkefi, and M. Siala, “POPS-OFDM with different Tx/Rx pulse shape
durations for 5G systems,” accepted at Fifth International Conference on Communications and
Networking (COMNET’2015), Hammamet, Tunisia, November 2015. 86