Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Sony CFP Presentation Date Submitted: 3 March 2003 Source:Etsumi Fujita, Katsumi Watanabe, Katsuyuki Tanaka, Bob Huang Mitsuhiro Suzuki, Shin Saito, Jun Iwasaki Company: Sony Corporation Sony Electronics of America Address: 6-7-35 Kitashinagawa Shinagawa-ku,Tokyo. Japan 141-0001 One Sony Drive TA-1 Voice: +81-3-6409-3201, FAX: +81-3-6409-3203 Park Ridge, NJ 07656 E-Mail: fujita@wcs.sony.co.jp, KatsumiA.Watanabe@jp.sony.com, V: 201-358-4409 Katsuyuki.Tanaka@jp.sony.com, suzuki@wcs.sony.co.jp, F: 201-930-6397 shin_saito@sm.sony.co.jp, junjun@wcs.sony.co.jp EMail: robert.huang@am.sony.com Re:02/372r8 of 17 January 2003, 03/138r0 Sony CFP Document of 3 March 2003 Abstract: This presentation provides detailed information on a unique UWB proposal. Purpose: This material is submitted to support a unique UWB proposal. Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

2. Our Proposal Meets or exceeds all criteria and • Excels in fast acquisition – unique method • Performs continuous channel estimation • Has low complexity/low gate count • Has high system capacity • Scalability to 3 Gbps at maximum range

3. Our proposal Excels * – Proposer Response

4. We think “UWB” is Precious frequency band: we will never get again in the future Carrying an extremely high bit rate Therefore, we want To provide big convenience to our customers (consumers) To put our best effort and technologies into this To achieve effective usage of the frequency resource Our Motivation

5. UWB can provide Greater than 1 Gbps by wireless Simple RF and modulation system Low power consumption and low cost UWB can connect all of CE devices and realize a Wireless Broadband Home and Personal Network!! What we expect from UWB all of CE devices WirelessBroadband Home and Personal Network!!

6. Mobile Home Memory Stick Internet i.LINK Network Services Connecting Our World

7. Summary of Characteristics

8. Proven architecture Known implementations Understood cost Low implementation risk System Configuration

9. We considered non-DS-SS approaches Especially to combat severe multipath effects But, DS-SS has advantages in: Simple RF implementation Energy collection with rake receiver Why DS-SS? Problem: How to improve DS-SS performance in severe multipath conditions? Simple!! By fast and accurate channel estimation!!

10. The 3 Channel System 5 GHz FCC Spectrum Mask -41.3 dBm/MHz W-LAN Power Spectrum 4 5 6 8 9 10 11 2 3 7 1 Freq GHz

11. Multiple channels eases co-existence with Other radio systems (e.g., 802.11a) Between 15.3a networks Provides implementation Ease in lower channel Scalability to high bit rates in upper channels Why use 3 Channels?

12. Why use 1.8 GHz Bandwidth channels? Given: FCC power density limit –41.3 dBm/MHz • Transmit the most energy • Recover the most energy A wideband channel provides: • Greatest throughput / range / robustness Greatest throughput / range / robustness

13. Why a Single Carrier System? A Single Carrier: Transmits high energy • Power spectral density is more uniform • No guard bands in which energy is lost • 80 μW TX Power （= -11 dBm） Recovers max energy • Single channel optimization easier

14. Outstanding Features • Fast acquisition • Fast channel estimation for every packet • Maximizes utilization of frequency spectrum • Simple RF configuration: • no RF rake, no Tx RF pulse shaping filter • Multipath immunity • Fits FCC mask with low complexity • Co-exists with current wireless systems • Low cost full CMOS implementation

15. Fast Acquisition and Channel Measurement Why? • Needed for high throughput and robustness Our technique: • Fast compared to conventional sliding correlation method. • Performs a coherent channel measurement • Accurately measures delay profile • Allows short preamble • Detect precise chip-phase from measurement results

16. Fast Channel Measurement • Chip-rate is generated by dividing the carrier frequency by 4 • Measurement Resolution = 250 ps • Once carrier frequency is tracked, the chip-rate tracking is available • Chip and carrier are synchronized • Only one tracking loop • Fast and low cost

17. Fast Coherent Channel Measurement • Gives fast Link Adaptation • Burst by burst • Goes from 46 Mbps to 1000 Mbps by changing coding rate • Maximizes • Throughput • Utilization of frequency spectrum

18. Simple RF Configuration • No RF pulse shaping filter • Uses waveform shaping to fit FCC mask • Lower cost, Less complex, No filter loss • Single RF chain (min. 4 finger baseband rake) • DS-SS • Well understood • Proven implementations • Proven performance

19. Multipath immunity • Provided using a baseband rake receiver • A accurate channel measurement results in good rake performance • Continuous channel measurement good for changing multipath environment • Measure channel for every packet

20. Fits FCC mask with low complexity • Well known and proven DS-SS technique used to shape spectral output to FCC fit mask

21. 500 Mpulse/s on I axis 500 Mpulse/s on Q axis I & Q are multiplexed with timing offset Maximize pulse rate Minimize inter-pulse interference no pulse overlap π/2 Shift BPSK no pulse overlap To:

22. Comparison of Modulation Q Q Q The result is: • Constant Envelope • Good pulse shaping I I I I-ch modulation Q-ch modulation Constellation

23. -30 -40 -50 -60 -70 -80 -90 -100 0 2 4 6 8 10 12 14 -30 -30 -30 -40 -40 -40 -50 -50 -60 -60 -50 Power (dB/MHz) -70 -70 -80 -80 -60 -90 -90 -70 -100 -100 0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14 9 Frequency (Hz) x 109 -80 -90 -100 0 2 4 6 8 10 12 14 Co-existence With Other Systems Channelization: • By-passes 5 GHz WLAN band • Can be changed to meet different regulatory requirements Bandpass Filter s Receive uses • Bandpass filter • Low pass filter

24. Working with Uncoordinated Piconets Separate piconets using different: • Spreading gain • Physical channels

25. Antenna practicality • This solution uses a omni directional antenna with a reasonably flat frequency response • We understand that suitable low cost antennas will be available • Therefore the antenna will not be a unique element that needs to be standardized for interoperability • Simple low cost antennas will work! antenna unique element interoperability

26. Time to Market Estimated timeline:

27. Other Design Points • High capacity • Low power consumption • High robustness and range • Low cost • Regulatory rules

28. Design point:High Capacity • High bandwidth channelization • High capacity channels • Fast acquisition (short preamble) • Accurate and fast channel estimation • Baseband rake receiver to capture maximum energy • Simple, Low cost, Expandable • Simple, Low cost, Expandable

29. Design point :Robustness Coding details: • Reed Solomon code up to 1 Gbps • Convolution code up to 125 Mbps

30. Design point :Robustness Fast Link Adaptation used to dynamically select: • The spreading factor • The coding scheme Under Good Channel Conditions: • Decrease spreading factor for greater throughput & • Omit coding for power saving Under Bad Channel Conditions: • Increase spreading factor for greater robustness & • Increase coding to increase link margin

31. TX_ON TX_ON TX_ON RX_ON RX_ON RX_ON 10 10 μsec 10 10 μsec SYNTH_ON SYNTH_ON 100 μsec SYNTH_SAVE SYNTH_SAVE Several msec OFF OFF Design point :Power Saving Mechanism • Supports modes defined in the proposed 802.15.3 standard: • ACTIVE, HIBERNATE, PSPS (Piconet synchronized power save), and SPS (Synchronous power save)

32. Range between devices is calculated from the measured round trip delay 7.5 cm Precision Design point :Ranging 250[ps]

33. Design point :Low Complexity/Low Cost Easy RF implementation for one chip full CMOS solution • Design avoids high amplitude Pulses • Uses well known DS-SS modulation Relax linearity for on-chip PA Single chain RF Simple configuration • Uses baseband rake • No Tx RF pulse shaping filter

34. Design point :Low Complexity/Low Cost Unit manufacturing cost/complexity (UMC) • Analog die size : 5~6mm2 (CMOS 0.18um) including VCO, PLL, Modulator, Pulse shaper, LNA, Power Amp., AGC, LPF, RF switch, Complex mixer, ADC • Digital (without MAC) – Gate count : < 300k gate including SS modulator/demodulator, RAKE, Encoder/Decoder, PHY header mux/demux • Major external components TCXO, receive BPF, voltage regulator, decoupling capacitor/inductor, connectors

35. Issue: Low Power consumption • Low complexity, single chain RF • Low voltage CMOS implementation • Reduced linearity requirements for PA

36. Outstanding Features • Fast acquisition • Fast channel estimation for every packet • Maximizes utilization of frequency spectrum • Simple RF configuration: • no RF rake, no Tx RF pulse shaping filter • Multipath immunity • Fits FCC mask with low complexity • Co-exists with current wireless systems • Low cost full CMOS implementation