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

2. Agenda KEY DRIVERS FOR THE 4G TECHNOLOGIES 3GPP LTE: AN EMERGING 4G STANDARD KEY TECHNOLOGIES FOR LTE

3. KEY DRIVERS FOR THE 4G TECHNOLOGIES

4. 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)

5. 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

6. 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

7. 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 4G 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 4G 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

8. 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

9. 3GPP LTE: EMERGING 4G STANDARD

10. 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

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

24. 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

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 

26. 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

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