Wi Max
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WiMAX (IEEE 802.16) is a wireless broadband technology that provides transmission of data using a radio link instead of a cable infrastructure. It uses multiple access schemes such as OFDM and OFDMA to allow transmission to multiple users. The 802.16 standard defines the MAC layer which includes QoS, security, and bandwidth allocation to manage communication between the base station and subscriber stations.
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The document discusses bandwidth utilization techniques of multiplexing and spreading. It defines bandwidth utilization as the wise use of available bandwidth to achieve specific goals. Multiplexing is used to achieve efficiency by allowing simultaneous transmission of multiple signals across a single data link. Spreading is used to achieve privacy and anti-jamming. The document describes different types of multiplexing including frequency-division multiplexing, wavelength-division multiplexing, and time-division multiplexing. It provides examples of how analog and digital signals can be multiplexed.
Lesson 3 bandwidth
Bandwidth refers to the amount of data that can be transferred over an internet connection in a given period of time, typically measured in kilobytes or megabytes per second. The more bandwidth available, the faster multimedia products containing various types of media like video, audio and images can be downloaded and interacted with. Limitations of small bandwidth include slow download speeds for multimedia content and potential throttling of downloads to prevent overuse of the connection.
Mobile WiMAX
The document discusses the growing demand for wireless internet access and how WiMAX is well-suited to meet this demand. It outlines how WiMAX provides broadband connectivity anywhere, uses an all-IP architecture for efficiency, and is seeing wide deployment by operators around the world. Over 250 trials and deployments in 65 countries demonstrate the momentum behind WiMAX as a leading solution for mobile internet access.
Seminar report on Fifth Generation of Wireless Technologies
This document is a seminar report submitted by Abhijith S for their bachelor's degree. The report discusses the evolution of wireless technologies from 1G to the emerging 5G standard. It provides definitions of 5G wireless systems and outlines some of its key properties, such as worldwide cellular connectivity, high data capabilities, flexibility, and use of new technologies like millimeter wavebands and IPv6 addressing. The report also gives brief overviews of the first four generations of wireless standards, from the original analog 1G to the current 4G LTE standard.
Bandwidth Presentation
This is my mini project on bandwidth. Its the best i could do and if theres any enquires on my powerpoint slide show, please let me know lol :)
thankyou.
Wimax / ieee 802.16
The WiMAX MAC encapsulates data packets from higher layers through various sublayers. It adds headers at each sublayer for functions like security, bandwidth allocation, and multiple access control before the data is encoded and transmitted through the physical layer using modulation schemes like OFDM. This ensures efficient transmission of data over the wireless medium according to QoS priorities and security requirements.
Wimax Technology
This document provides an overview of WiMAX technology, including defining WiMAX as a wireless broadband technology based on the IEEE 802.16 standard. It describes fundamental WiMAX concepts such as the base station, subscriber station, modes of communication including line of sight and non-line of sight. The document also outlines benefits of WiMAX such as faster speeds than broadband, wireless connectivity without cables, and broad coverage compared to WiFi hotspots. It concludes that WiMAX can bring broadband access to more users in rural and developing areas.
WiMAX Basics
Definition:WiMAX is a fourth generation (4G) technology.WiMAX stands for Worldwide Interoperability for Microwave Access.WiMAX is technically also known as “IEEE 802.16”WiMAX is a wireless communications standard designed for creating Metropolitan Area Networks(MANs).A Broadband Wireless Access(BWA) technique offering fast broadband connection.It allows a user, to browse the internet on a laptop without physically connecting it to a router.It involves microwaves for the transfer of data wirelessly.Founded by Ensemble, CrossSpan, Harris & Nokia.
Wimax
This document summarizes a seminar presentation on proposing an adaptive bandwidth request scheduler for real-time polling service (rtPS) in WiMax networks. The proposed scheduler aims to estimate data arrival rates and calculate adaptive time slot allocations to address problems in the standard rtPS scheduler, such as requests made before grants are received. Analysis shows the adaptive scheduler reduces average queue lengths and delays compared to conventional scheduling. In conclusion, the adaptive approach requires smaller buffers and decreases delays significantly for rtPS traffic.
Data transmission rate and bandwidth
Data transmission rates depend on three main factors: available bandwidth, the signal used, and noise levels. Bandwidth refers to the range of frequencies a channel can pass and is measured in Hertz, while transmission rate is measured in bits per second. Digital data uses discrete states represented by bits, while analog data is continuous. Common digital transmission systems include telephone lines, Ethernet, cable modems, DSL, wireless networks, and optical fiber, with rates ranging from kilobits per second to several gigabits per second. Analog transmission faithfully reproduces all signal details but quality degrades with each repeater, while digital only needs to reproduce discrete levels.
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This document provides an overview of WiMAX and the IEEE 802.16 standards for broadband wireless access. It describes key aspects of the 802.16 MAC including its reference model, addressing, connection-oriented design, quality of service support, and uplink/downlink frame structures. It also summarizes the MAC convergence and common part sublayers, addressing, management connections, and bandwidth request mechanisms.
wimaxME.ppt
WiMAX (Worldwide Interoperability for Microwave Access) uses the IEEE 802.16 standards for broadband wireless access over long distances. It supports both point-to-multipoint and mesh topologies with a connection-oriented MAC layer that provides quality of service. The physical layer uses OFDM, OFDMA, or single carrier modulation and the MAC layer supports various services classes for different types of traffic.
Wi max
This document discusses WiMAX (Worldwide Interoperability for Microwave Access), the IEEE 802.16 wireless broadband standard. It provides an overview of key aspects of WiMAX including the 802.16 reference model, MAC features and services, QoS support, and bandwidth request mechanisms. The MAC supports connection-oriented transmissions, adaptive burst profiles, and flexible QoS with scheduling for various service classes including UGS, rtPS, nrtPS and BE.
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The document discusses key aspects of the IEEE 802.16 WiMAX standard. It describes WiMAX as providing broadband wireless access over long distances with high speeds. It outlines the MAC layer standards, including sublayers for convergence and management. It details the MAC frame structure, addressing, and scheduling priorities for different traffic types. Finally, it discusses advantages like mobility support, disadvantages like power consumption, and future applications of WiMAX technology.
IEEE 806.16
IEEE 802.16 is a standard for wireless metropolitan area networks that provides broadband wireless access. It defines the air interface for fixed broadband wireless access systems, including the physical layer and media access control layer. The standard specifies point-to-point and point-to-multipoint topologies for wireless transmission between base stations and subscriber stations. It supports services such as fixed and mobile WiMAX that provide wireless internet access for homes, businesses, and mobile devices.
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IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in the 2.4, 3.6, 5, and 60 GHz frequency bands. It provides connectivity through wireless stations organized into basic service sets (BSSs) that together form an extended service set (ESS). Key components include the MAC sublayer, physical layers using technologies like direct sequence spread spectrum (DSSS), and services that enable station mobility and quality of service (QoS).
Wi-max
IEEE 802.16 is a standard for wireless metropolitan area networks (WirelessMANs) that provides broadband wireless access over several kilometers. It uses point-to-multipoint architecture with base stations and subscriber stations. WiMAX is a wireless technology that conforms to the IEEE 802.16 standard and aims to provide "last mile" wireless broadband access. The standard defines the physical and media access control layers for both fixed and mobile broadband wireless access.
WSN protocol 802.15.4 together with cc2420 seminars
WSN protocol 802.15.4 together with cc2420 seminars . It is based on the standand of ieee802.15.4 and data sheet of the radio transceiver cc2420.
Note that some slides are borrowed.
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Wireless LAN technologies include WiFi (802.11 standards) and personal wireless networks like Bluetooth. 802.11 defines infrastructure networks with access points connected to wired networks, and ad-hoc networks without infrastructure. Key aspects of 802.11 include CSMA/CA for medium access, frame formats, and physical layer standards for radio (802.11a/b/g/n) and infrared transmission. Wireless networks offer mobility and flexibility compared to wired networks but have lower bandwidth and need to comply with regulations.
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Wireless LAN technologies include WiFi (802.11 standards) and personal wireless networks like Bluetooth. 802.11 defines infrastructure networks with access points connected to wired networks, and ad-hoc networks without infrastructure. Key aspects of 802.11 include CSMA/CA medium access, frame formats, and physical layer standards for radio frequencies (802.11a/b/g/n) and infrared (now obsolete). Wireless networks offer mobility and flexibility compared to wired networks but have lower bandwidth and can be affected by interference.
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These ppt are the part 2 of mobile computing concepts. These ppt defines the following things
Wireless Networking
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This document provides an overview of wireless LAN and Bluetooth technologies. It describes IEEE 802.11 standards for wireless LAN including the basic service set, extended service set, infrastructure and ad-hoc modes. It covers the physical layers, MAC protocols and services of 802.11. It also summarizes ATM and its extension to wireless networks, issues in the transition, proposed W-ATM architectures, advantages and disadvantages. Finally it defines Bluetooth technology, the protocol stack and unlicensed frequency band used.
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This document provides an overview of CDMA and WiMAX technologies as well as the components that make up a BSS (Base Station Subsystem) in a CDMA network, including the BSC (Base Station Controller) and BTS (Base Transceiver Station). It describes the functions of the BSC and BTS, their interfaces, and configurations including components like the CIPS (Common Interface Processing Subrack) in the BSC and modules in the DBS3900 distributed antenna system.
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This document provides an overview of wireless local area networks (WLANs), including:
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ATM (Asynchronous Transfer Mode) is a connection-oriented networking technology that transmits data in fixed-size cells and can support different types of data and applications with quality of service guarantees. ATM uses virtual connections identified by virtual path and channel identifiers to transport cells through a network of ATM switches. The ATM architecture includes physical, ATM, and adaptation layers to encapsulate data for transmission and ensure interoperability between network elements.
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The document discusses wireless local area networks (WLANs) and personal area networks (PANs). It describes the characteristics and fundamentals of WLANs, including their advantages like flexibility and lower costs, and disadvantages such as lower bandwidth and security issues. It provides details on common wireless standards like IEEE 802.11, Bluetooth, and HomeRF. It also compares infrastructure-based and ad-hoc network topologies and summarizes key aspects of the IEEE 802.11 standard including services, physical layers, and frame formats.
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The document provides information about the IEEE 802.11 WLAN standard and its various layers:
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Bbgbnhm
WiMAX is a wireless technology that can provide broadband access over long distances. It uses wireless transmission in the 2-11 GHz range to connect users to a base station up to 50 km away. From the base station, users can access the internet and other public networks at speeds up to 70 Mbps shared among users. WiMAX allows both line-of-sight and non-line-of-sight connections using adaptive burst profiles. It has the potential to provide high-speed wireless internet access to areas not reached by cables and DSL.
Mv3621812185
International Journal of Engineering Research and Applications (IJERA) aims to cover the latest outstanding developments in the field of all Engineering Technologies & science.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
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Wi Max
- 1. WiMAX for Broadband Wireless Access By: Karim M. El Defrawy ICS UCI-2005
- 5. IEEE 802.16 -- Introduction Coverage range up to 50km and speeds up to 70Mbps(shared among users).
- 6. IEEE 802.16 -- Introduction Source: WiMAX, making ubiquitous high-speed data services a reality, White Paper, Alcatel.
- 9. Adaptive PHY Source: Understanding WiMAX and 3G for Portable/Mobile Broadband Wireless, Technical White Paper, Intel.
- 12. IEEE 802.16 MAC – OFDM PHY TDD Frame Structure
- 13. IEEE 802.16 MAC – OFDM PHY FDD Frame Structure
- 14. FDD MAPs Time Relevance frame Broadcast Full Duplex Capable User Half Duplex T erminal #1 Half Duplex T erminal #2 UPLINK DOWNLINK DL MAP UL MAP DL MAP UL MAP
- 18. IEEE 802.16 MAC -- CPS – MAC PDU Format
- 20. IEEE 802.16 MAC -- CPS – Data Packet Encapsulations
- 24. IEEE 802.16 MAC – CPS – MAC PDU Concatenation
- 25. IEEE 802.16 MAC – CPS – MAC PDU Fragmentation
- 26. IEEE 802.16 MAC – CPS – MAC PDU Packing
- 36. IEEE 802.16 MAC – CPS UL Sub-Frame Structure Source: http://www.cygnuscom.com/pdf/WP_PN_Article.pdf