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

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [ Samsungs preliminary PHY proposal to 802.15.6 ] Date Submitted: [9 March, 2009]

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

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Samsungs preliminary PHY proposal to 802.15.6] Date Submitted: [9 March,2009] Source: [Kiran Bynam , Dr.Noh-Gyoung Kang, Dr.Chihong Cho, Seung-Heun Park, Dr.Sridhar Rajagopal, Dr.Eun Tae Won] Re: [Contribution to IEEE 802.15.6 Meeting, January 2009] Abstract: [Preliminary PHY proposal for 802.15.6 Requirements.] Purpose: [To be considered in IEEE 802.15.6] 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. 1 1

  2. Chaotic-UWB proposal to 802.15.6 Samsung Electronics February, 2009

  3. Contents • TRD Requirements • Target area of applications • Modulation-FM OOK • Receiver • Link Budget for AWGN • Interference rejection • SOP • Summary • References

  4. Requirements • 10 kbps to 10 Mbps • Range of 3 m at lowest mandatory rate • 10 piconet co-existence at the lowest mandatory data rate • Low Power & complexity • Regulatory Compliance

  5. Proposal Scope • On-body applications • Data rate range of 100 kbps to 10 Mbps • On-body to air (CM4) • On-body to On-Body (CM3) • UWB Higher band (7.25 to 8.5 GHz) to have the global regulatory compliance • Low Power

  6. OOK Modulator Chaotic Oscillator BPF Choice of Modulation scheme • Chaotic FM-OOK • OOK modulation on Frequency modulated Carrier by Saw-tooth waveform • Guard Interval to provide multipath resistance • Less Complex • Low power consumption • Ease of implementation PA Data Scrambler FEC Duty Cycle circuit

  7. Off-period Symbol-period Preamble (64 bits) PHY Header ----------Data --------- 16-bit CRC Preamble at 1 Mcps Chaotic FM-OOK (cont’d) • Preamble rate at 1 Mcps • Preamble includes AGC, Threshold and Frame Synchronization, channel estimation sequence • PHY header coded at Lowest rate and contains information like Length, Modulation Type, Scrambler seed etc. followed by 8-bit CRC

  8. Scalability of data rates

  9. BPF LNA Envelope Detector & LPF VGA ADC 100 Msps Baseband processing After LPF Receiver architecture • 3rd order butter worth filter with 500 MHz bandwidth • Schotky diode based envelope detector • 8 bit ADC bit width at 100 Msps sampling rate

  10. PER vs. average Eb/No • SNR = (Eb/No) * (Num Bits per symbol /Bandwidth* Symbol Period) * (N/K) coding • For 250 Kbps, Eb/No of 20 dB corresponds to -13 dB SNR • For 1 Mbps, Eb/No of 20 dB corresponds to -7.5 dB SNR

  11. PER vs. average Eb/No

  12. Link Budget at 250 Kbps

  13. Link Budget at 1 Mbps

  14. UWB Band-Regional compliance 3.1G 10.6G US 7.25G 10.25G Japan Globally available spectrum 7.2G 10.2G Korea 8.25G 6G Europe

  15. Interference to UWB * Calculated by assuming indoor path loss index as 3

  16. PER : Interference to BAN from ECMA368 * 250Kbps

  17. SOP (Simultaneous Operating Piconets) • Multiple access across piconets: • time-hopping PDM (pulse division multiplexing) & FDM Different Piconet uses different time-hopping slot & 2 different 500 MHz bands • 5 overlapping piconets per band • Each colour corresponds to one piconet channel • All piconets are unsynchronized 1 µ sec

  18. 5 SOP interfering environment Desired transmitter Receiver h Undesired transmitter 1 AWGN h1 Undesired transmitter 2 h2 Other piconets Undesired transmitter 3 h3 Undesired transmitter 4 h4

  19. Simulation results for SOP • The relation between SINR and distance between the nodes will be considered • Performance can be improved with the MAC interaction

  20. Summary • Range • 12.5 m at 250 kbps • 6 m at 1 Mbps • 0.5 m at 10 .9 Mbps • Data rates scalable from 250 kbps to 10 Mbps • Low Power • Co-existence of 10 networks possible at Lowest rate of 250 kbps

  21. References • 802. 15-08-0644-09-0006 -Technical Requirements document • 802.15-08-0780-05-0006-Channel model document of TG6 • “15-08-0792-00-0006 - Channel model considerations for IEEE 802.15.6” - Amal Ekbal, Jun Shi, Zhanfeng Jia, Jason Ellis • “Low-Rate Chaotic UWB Transceiver System Based on IEEE 802.15.4a” Sang-Min Han, Mi-Hyun Son, Yong-Hwan Kim, and Seong-Soo Lee • “The Chaotic On-off Keying with Guard Interval for Ultra-Wideband Communication” Kwonhyung Lee, Soocheol Kyeong, Jaehyon Kim, Younghwan Kim, and Hyuncheol Park • “Flexible Chaotic UWB Communication System With Adjustable Channel Bandwidth in CMOS Technology“ Sang-Min HanPopov, O.Dmitriev, A.S.

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