Mymo wireless presentation_30_jul'10
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    Mymo wireless presentation_30_jul'10 Mymo wireless presentation_30_jul'10 Presentation Transcript

    • 4 th Generation Wireless Systems Focus on 3GPP LTE Dr. Sondur Lakshmipathi MYMO Wireless Technology Pvt Ltd Entrepreneurship Center Indian Institute of Science Bangalore 30 Sept 2010
    • Agenda
    • Cellular Evolution: GSM Phones Enhancing to IP Based LTE
      • Phenomenal growth of cellular users across globe
        • GSM Global coverage is 80%
        • Spread across 219 countries and 750 Operators around the globe
        • In India alone, 500 Million cell phone users presently – TOI , Dec’09
        • In-Stat surveys show 3 out of 5 users prefer handheld phones with one-stop communications  LTE will be the one stop solutions device
        • LTE being standardized as Advanced GSM  Huge Mkt opportunities
      3GPP LTE* is the natural successor to GSM *Third Generation Partnership Project (3GPP)
    • Cellular Evolution: (contd..) GSM Phones Enhancing to IP Based LTE
      • We are at the beginning of a new revolution of 3G & 4G communications
        • More than 80% of cellular operators are adopting LTE
        • Emergence of new Competitive & Complementary wireless with unbelievable speeds and quality – WiFi, WHD exceed 100Mbps
        • Voice-service by cellular networks is transforming to totally IP-based networks through LTE
      • LTE Mobile Broadband to Generate $70 Billion in Revenues Within 5 Years - Juniper Research, 31 Mar’10
    • Business drivers: Evolution of new cellular standard
      • Phenomenal growth of cellular users across globe
        • In India crosses 500M cell phone users
        • Worldwide 3 billion users
    • 1G 2G 3.5G 3G
      • Analog
      • Cellular
      • Voice
      • AMPS
      • TACS
      • GSM,CDMA
      • Voice
      • Pager
      • 10kbps data
      • TDMA/CDMA
      • eHSPA, EVDO
      • Voice/Video
      • Email/Web
      • 10Mbps data
      • TDMA/CDMA
      • LTE
      • Voice over IP
      • Video over IP
      • Email/Web
      • DVB, Multimedia
      • 100 Mbps data
      • MIMO-OFDM
      • LTE++
      • Voice over IP
      • Video over IP
      • Email/Web
      • DVB, Multimedia
      • 1 Gbps data
      • MIMO-OFDM
      2G 3.5G 3G
      • IEEE 802.11b
      • Email/Web
      • 11Mbps data
      • CSMA-CA
      • CCK
      • IEEE 802.11g,a
      • Voice over IP
      • Video over IP
      • Email/Web
      • 54 Mbps data
      • CSMA-CA
      • OFDM
      • IEEE 802.11n
      • Voice over IP
      • Video over IP
      • Email/Web
      • 600 Mbps data
      • CSMA-CA
      • MIMO-FODM
      • IEEE 802.11VHT
      • HDTV, OH Projector
      • Voice.Video over IP
      • Email/Web
      • 1.2 Gbps data
      • CSMA-CA
      • MIMO-FODM
      WiFi Evolution Cellular Evolution 1980 1994-98 2008-09 2010-11 2012-14 Cellular & WiFi: The two most successful technologies that hold great promise for future markets Cellular & WiFi: Two Decades of Phenomenal Growth
    • Emerging 3G and 4G Standards
      • Application Segments
        • Voice, Video, Data, Multimedia Broadcast
      • Differentiation
        • Low Power & Low Gate Count , Small Form Factor, High Performance
        • Innovative solutions
      WiFi IEEE 802.11n 600 Mbps IEEE 802.11vht 1.2 Gbps WIMAX IEEE 802.16e 72 Mbps IEEE 802.16m 100+ Mbps 3gpp LTE 3gpp LTE 100 Mbps 3gpp LTE+ 180 Mbps WirelessHD Ver1.0 4 Gbps Ver2.0 25 Gbps UWB MBOA 480 Mbps IEEE 802.15.3a+ 1 Gbps Technology Emerging 3G 2008-2010 Future 4G Stds 2011-2014 NFC RFID Smart Cards NFC & WSN Combos WCDMA EVDO UMB 1 Gbps
      • What is 3GPP LTE? Why is 3GPP LTE?
        • A flat all IP-architecture with an air-interface that exploits latest advances in communications like SC-FDMA, OFDMA and MIMO.
        • A next-generation enhancement to GSM and CDMA
    • LTE Uplink uses Multi-User MIMO, which pairs-up UEs to share the same UL resource to increase cell Throughput At any given instant, cell’s spectral resource is shared between all active users Multi Users per Cell: Active, Idle and MU-MIMO modes
    • Great Scope for LTE Technology Innovations: Cooperative Communications WiFi 2.4GHz LTE 2.7GHz LTE Tx-Rx in SISO/MIMO WiFi Tx-Rx in SISO/MIMO LTE SISO WiFi SISO Connectivity to WiFi and LTE in SISO/MIMO mode NB non-LTE WiLTE HH Phone LTE BS WiFi Connectivity to Notebook and LTE BS WiLTE Phone WiFi Access Point LTE BS Switching b/w AP or LTE BS
    • Global Commitments on LTE March, 2009 Compilation: List compiled from Informa Telecoms & Media and public announcements. It includes a variety of commitment levels including intentions to trial, deploy, migrate, etc. For additional information contact
    • Global Commitments on LTE (contd..)
    • About MYMO Wireless Technology Pvt Ltd
    • MW1000 : Test Engineers Delight RF Unit GPS 10MHz ANT ANT Ref Clk 1 PPS MW1000 Desktop CPU eNodeB R R H DL & UL Results
    • MW1000 : Wave Capture eNodeB R R H RF Unit GPS 10MHz ANT ANT Ref Clk 1 PPS MW1000 Desktop CPU LTE UE eNodeB DL UE RACH REQ Splitter Splitter Splitter
    • Differentiating Factors State-of-the-art algorithm Designs Patented methods & algorithms for low power and gate count Seamlessly integrated & partitioned code for HW: PHY-MAC-RLC-PDCP-RRC Meeting real-time latency constraints as per UE Specs on Quadcore Pentium Fully verified by 3 rd party test tools RTL Build for SoC/ ASIC Highly optimized soft IP
    • MYMO Wireless Confidential DST-Lockheed Martin Gold Medal 2009 NASSCOM-2009 Top 6 Finalists Award
    • OFDM: Orthogonal Frequency Division Multiplexing
      • Illumination by single light
      • Illumination not uniform in all corners of a hall
      • Break down of bulb  complete loss of light
      • Illumination by many small light
      • Illumination is uniform in all points of a hall
      • Break down of a bulb  continue illumination by other lights
      Equal Power P 1 P 2 P 3 P 4 P 5 P 6 P 7 P 8 P 9 P P = P 1 +P 2 +P 3 +P 4 +P 5 +P 6 +P 7 +P 8 f c f c f c + Δ f f c +2 Δ f F c - Δ f F c -2 Δ f Single Carrier Modulation Multi-carrier Modulation Equal Power
    • Fading Channel Performance Comparison: Single Carrier and OFDM Direct path Multipath Multipath Fading Affects spectrum of Single Carrier Modulation f  Fading Affecting Multi-carrier Modulation c c f 
    • OFDMA: Multiplexing of Multi User OFDM Signals User 1 Channel freq response User 2 Channel freq response
      • For User-1 and User-2
      • subcarriers are selected
      • with better SNR.
      • Then User-1 and User-2
      • subcarriers are Multiplexed
      • forming the OFDMA signal
      • In LTE Channel Quality
      • Indicator (CQI) is used to
      • select the subcarriers by
      • eNodeB
      User 1 & User 2 subcarriers multiplexed
    • Frequency domain Time domain Time domain SC-FDMA Transmitter at the User Equipment SC-FDMA Receiver at the eNodeB Up Link: SC-FDMA Transmitter and Receiver + BRP = Bit Rate Processing QAM Mapping Resource Allocation M Point DFT Map Mapping to Subcarriers Perform N-point IFFT Add CP; N>M RF Up Conversion QAM De-Mapping Resource Demux M Point DFT Map Mapping to Subcarriers Perform N-point IFFT Add CP; N>M RF Down Conversion BRP Transform Precoding OFDM Data & Control M A C BRP M A C
    • Code Block Segmentation Channel Coding Rate Matching Code Block Concatenation Circular Buffering MAC Logic Channel Transport Channels Code Word-0 Code Word-1 Scrambling QAM Map QPSK 16QAM 64QAM Scrambling QAM Map QPSK 16QAM 64QAM Layer Mapper Tx Div: CDD SFBC Beamform Precoding 2x2 MIMO Precoding Subcarrier Mapper Subcarrier Mapper OFDM OFDM Down Link: OFDMA 2x2 MIMO Transmitter Bit Rate Processing RF
    • THANK YOU Q & A