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Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 1 Project: IEEE P802.15 Working Group for Wireless.

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Presentation on theme: "Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 1 Project: IEEE P802.15 Working Group for Wireless."— Presentation transcript:

1 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Multi-coded Bi-orthogonal PPM (MC-BPPM) Based Impulse Radio Technology Date Submitted: 8 Sep., 2004 Source: [Hyung Soo Lee (1), Cheol Hyo Lee (1), Dong Jo Park (2), Dan Keun Sung (2), Sung Yoon Jung (2), Joon Yong Lee (3)] Company: [(1) Electronics and Telecommunications Research Institute (ETRI) (2) Korea Advanced Institute of Science and Technologies (KAIST) (3) Handong Global University (HGU)] Address: [(1) 161 Gajeong-dong, Yuseong-gu, Daejeon, Republic of Korea (2) 373-1 Guseong-dong, Yuseong-gu, Daejeon, Republic of Korea (3) Heunghae-eup, Buk-gu, Pohang, Republic of Korea] Voice: [(1) +82 42 860 5625, (2) +82 42 869 5438, (3) +82 54 260 1931], FAX: [(2) +82 42 869 8038] E-Mail: [(1) hsulee@etri.re.kr, (2) syjung@kaist.ac.kr, (3) joonlee@handong.edu] Abstract: [This document proposes preliminary proposal for the IEEE 802.15.4 alternate PHY standard] Purpose: [Preliminary Proposal for the IEEE802.15.4a standard] 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 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 2 Multi-Coded Bi-orthogonal PPM Based Impulse Radio Technology ETRI-KAIST-HGU Republic of Korea

3 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 3 Contents Band Plan Pulse Design Multi-Coded Bi-orthogonal PPM (MC-BPPM) PHY Frame Structure Transceiver Architecture Data Rate Link Budget Ranging Accuracy for Location Awareness

4 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 4 Band Plan Bandwidth : Two bands - Low band (3.1 to 4.9 GHz) : Mandatory band - High band (5.825 to 10.6 GHz) Low band 34567891011 High band 34567891011

5 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 5 Low Band Pulse Design : Example (1) Prolate pulse* - Pulse duration : 2.1376ns Bandwidth : 1.8GHz *: Parr, B.; ByungLok Cho; Wallace, K.; Zhi Ding Communications Letters, IEEE, Volume: 7, Issue: 5, May 2003

6 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 6 Low Band Pulse Design : Example (2) Chaotic pulse - Large base signal (base=2*bandwidth*duration) - Flexible bandwidth and signal duration

7 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 7 Multi-Coded Bi-orthogonal PPM (MC-BPPM) Operation example (L=3, Ns=4, Nr=1, Tg=0 ns) Data block ( L bits ) Ex. L=3 Orthogonal code set ( Code Length : Ns ) Ex. Ns=4 Modulation Multi-coded symbol ( Code rate : L/Ns ) Ex. Code rate = 3/4 1-311 Bi-orthogonal PPM : 1 1 1 1 11 1 1 1 1 11 1 1 11-31

8 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 8 PHY Frame Structure Frame structure of PPDU (example) PreambleSFDPHRPSDU : # of bits per data block : Orthogonal code length : # of repetitions : Pulse bin width (duration) : Total transmit time duration of a data block : Guard time for processing delay : Multi-coded chip duration : Multi-coded symbol duration : # of Repetitions : Code length : Position number for BPPM

9 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 9 Transmitter Receiver Transceiver Architecture Data Modulator Bi-phase PPM Channel Data Encoder Orthogonal Multi-code Data Pulse Generator Data Decoder Orthogonal Multi-code Data DeModulator Bi-phase PPM Data Pulse Generator Location Detector

10 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 10 Data Rate TmLNsNr Data Rate Target Data Rate 200ns1321281.220 kbps1 kbps 200ns116 19.53 kbps20 kbps 200ns3164117.19 kbps100 kbps 200ns5811.042 Mbps1 Mbps Low band modes (example)

11 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 11 Link Budget : Example Parameter UnitValue 1. Information data ratekbps10001 2. Distance (d)m30 3. Average TX powerdBm-8.75-35.75 4. Tx antenna gaindBi00 5. Geometric center freq.GHz44 6. Path loss at 1 mdB44.5 7. Path loss at d mdB29.5 8. Rx antenna gaindBi-3 9. Rx powerdBm-85.75-112.75 10. Average noise power per bitdBm-114-144 11. Rx noise figure (NF)dB6.6 12. Average noise power per bitdBm-107.4-137.4 13. Required Eb/NodB1411.5 14. Implementation LossdB2.5 15. Rx. Sensitivity LeveldBm-90.9-123.4 16. Link MargindB5.1510.65 Bandwidth : 1.8GHz MC-BPPM 1% PER (32 Octets/Packet)

12 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 12 Location Awareness : Ranging Accuracy ParameterUnitValue Information data rateKbps1 L-1 NsNs -32 NrNr -128 TmTm ns200 Number of packets transmitted for range estimation -2 Peak SNRdB2.047 Pulse-Prolate Pulse (BW:1.8GHz) Channel mode-CM4 Sample intervalns0.2 Search region duration (T search) ns40 # of integration (N int )-32 x 128 x 2 / 40 x 0.2 = 40 RMS accuracy of ToA estimationns1.19 RMS accuracy of rangingm0.36

13 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 13 Conclusions Multi-Coded Bi-orthogonal PPM – Candidates for UWB Pulses Prolate pulse / Chaotic pulse – Time-diversity gain – Data rate scalability – Wide pulse bin width Reduced duty cycle Mitigated Inter bin Interference (IBI)

14 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 14 Back-Up Slides

15 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 15 Link Capacity of MC-BPPM Parameter Setting – Tm=2.1376ns(=Tw), Tg=0ns / Ns=4 & 8, Nr=1 – Comparison with M-ary BPPM, BPSK – Same Tx. pulse power per bit (Ns : repetition code length for BPPM, BPSK)

16 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 16 Pulse Bin Width (Tm) Pulse bin width vs. link capacity Higher link capacity Lower data transmission time Wide pulse bin width is possible!! Multipath immunity => Low Rx. complexity ( No equalizer )

17 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 17 Pulse Bin Width (Tm) Pulse bin width comparison – Comparison with (M-ary) BPPM & BPSK – Same link capacity condition, same Tx. pulse power per bit EbNo (dB) (L,Ns) 0246810Avg. (1,4) BPPM0.9950.9981.0051.0031.000 BPSK1.0011.0001.0010.9991.000 (3,4) BPPM0.6040.6060.5870.5540.5210.5050.563 BPSK0.7600.7690.7550.7230.6910.6720.728 (1,8) BPPM1.0031.0051.0030.999 1.0001.002 BPSK1.0010.999 1.000 (3,8) BPPM0.5800.5840.5730.5480.5200.5050.552 BPSK0.7660.7680.7520.7220.6910.6720.728 (5,8) BPPM0.2110.2220.2250.2140.1990.1900.210 BPSK0.7420.7450.7220.6770.6330.6090.688

18 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 18 Pulse Bin Width (Tm) Example – Let L=5, Ns=8 – Lower pulse duty cycle than M-ary BPPM & BPSK

19 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 19 Pulse Bin Width (Tm) Example – Let L=5, Ns=8 – More multipath Immunity than (M-ary) BPPM & BPSK!! No additional complexity to mitigate IBI!!

20 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 20 Location Awareness : Scenarios Criteria – Mobility of Nodes - Stationary, movable, or mobile – Density of Nodes - Dense or sparse – Mobility of Reference Nodes - Stationary, movable, or mobile – Position Accuracy - Low / Medium / High accuracy Wake up Yellow shirts. Information Sensor network by UWB UWB tag Nodes are stationary Nodes are mobile * Source : IEEE 15-03-0537-00-004a

21 Sep. 2004 H. Lee, D. Park, D. Sung, S. Jung and J. Lee doc.: IEEE 802. 15-04-0485-03-004a Submission Slide 21 Location Awareness : ToA Measurement of Direct Path Signal Search by sampling over multiple-pulse transmissions References: Joon-Yong Lee and Robert A. Scholtz, "Ranging in a dense multipath environment using an UWB radio link", IEEE Journal on Selected Areas in Communications, vol.20, no.9, pp.1677 - 1683, Dec. 2002 Robert A. Scholtz and Joon-Yong Lee, "Problems in modeling UWB channels", 36'th Asilomar Conference on Signals, Systems & Computers, Nov. 2002 Initial lock point Serial search by sampling & integration (Search for the 1 st level-crossing point) Length of search region Correlator output Threshold ToA of direct path


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