The document summarizes key aspects of 4th generation wireless systems with a focus on 3GPP LTE. It discusses the key drivers for 4G technologies including the growth of cellular users and transition to IP-based networks. It provides an overview of 3GPP LTE as the emerging 4G standard, describing it as a flat IP-based air interface that uses technologies like OFDMA and MIMO. It also summarizes some key LTE technologies such as OFDM and OFDMA and how they work.

1. 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

3. KEY DRIVERS FOR THE 4G TECHNOLOGIES

9. 3GPP LTE: EMERGING 4G STANDARD

11. 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

12. 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

13. 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 info@3gamericas.org http://www.3gamericas.org/documents/LTE%20Commitments%20Mar%202009.pdf

14. Global Commitments on LTE (contd..) http://www.3gamericas.org/documents/LTE%20Commitments%20Mar%202009.pdf

15. MYMO LTE IP & PRODUCTS

16. About MYMO Wireless Technology Pvt Ltd

17. MW1000 : Test Engineers Delight RF Unit GPS 10MHz ANT ANT Ref Clk 1 PPS MW1000 Desktop CPU eNodeB R R H DL & UL Results

18. 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

21. 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

22. MYMO Wireless Confidential DST-Lockheed Martin Gold Medal 2009 NASSCOM-2009 Top 6 Finalists Award

23. KEY TECHNOLOGIES FOR LTE

25. 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 

27. 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

28. 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

29. THANK YOU Q & A