1. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Multi-coded Bi-orthogonal PPM (MC-BPPM) Impulse Radio Technology Date Submitted: 8 Sep., 2004 Source: [Hyung Soo 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: Discussion and recommendations on TG4a Call for Proposal and Call for Intent to propose Purpose: For technology introduction 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 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 2 Multi-Coded Bi-orthogonal PPM (MC-BPPM) Impulse Radio Technology presented by Sung Yoon Jung ETRI-KAIST-HGU Republic of Korea

3. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 3 Contents TG 4a Alt-PHY Design Issues Band Plan Pulse Design PHY Frame Structure of MC-BPPM Multi-Coded Bi-orthogonal PPM (MC-BPPM) Transceiver Architecture Data Rate Simultaneous Operating Piconets (SOP) Link Budget Location Awareness

4. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 4 TG 4a Alt-PHY Design Issues Location awareness - Need wide bandwidth for high location accuracy Low transmit power - Need diversity techniques Harsh multipath environment (long delay spread) - Require a long guard time to avoid inter pulse interference (IPI) Data rate scalability - Link bit rate : 1 kbps (mandatory) - Aggregate bit rate : 1 Mbps (optional)

5. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 5 Band Plan Bandwidth : Two band - Low band (3.1 to 4.9 GHz) : Mandatory band - High band (5.825 to 10.6 GHz) Low band 34567891011 High band 34567891011

6. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 6 Pulse Design : Low Band 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

7. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 7 Pulse Design : Low Band Example (2) Chaotic pulse - Large base signal (base=2*bandwidth*duration) - Flexible bandwidth and signal duration

8. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 8 PHY Frame Structure Frame structure of PPDU (example) SHRPHRPHY load Byte bit PreambleSFDPHRPSDU : # of bits per data block : Orthogonal code length : # of repetitions : # of data blocks per frame : 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 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 9 Multi-Coded Bi-orthogonal PPM (MC-BPPM) Operation example (L=3, Ns=4, Nr=1, Tg=0ns) 1 1 1 1 11 1 1 1 1 11 1 1 11-31 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 PPM : Bi-orthogonal PPM :

10. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 10 Transmitter Architecture Transceiver Architecture Data Modulator Bi-orthogonal PPM... Channel Data Encoder Orthogonal Multi-code Multiplexing Node #A Transmitter Data Node #B Transmitter Node #Z Transmitter Pulse Generator

11. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 11 Transceiver Architecture (Cont’d) Receiver Architecture... Data Decoder Orthogonal Multi-code Data DeModulator Bi-orthogonal PPM De-multiplexing Node #A Receiver Data Node #B Receiver Node #Z Receiver Pulse Generator Location Detector

12. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 12 Data Rate TmLNsNr Data Rate Target Data Rate 200ns1321281.220 kbps1 kbps 200ns116 19.53 kbps20 kbps 200ns3164117.19 kpbs100 kbps 200ns5811.042 Mbps1 Mbps Low band modes (example)

13. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 13 Simultaneous Operating Piconets (SOP) Time Division - Time-separated superframe among piconets Code Division - Time-hopping code for each piconet

14. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 14 Link Budget ParameterUnitValue 1. Information data ratebps1 k1 M 2. Distance (d)m30 3. Average TX powerdBm-8.75 4. Tx antenna gaindBi00 5. geometric center freq.Hz4G 6. Path loss at 1 mdB44.5 7. Path loss at d mdB29.5 8. Rx antenna gaindBi00 9. Rx powerdBm-82.75 10. Average noise power per bitdBm-144-114 11. Rx noise figure referred to the antenna terminal (Nf) dB6.6 12. Average noise power per bitdBm-137.4-107.4 13. Required Eb/NodB8.511 14. Implementation LossdB2.5 15. Rx. Sensitivity LeveldBm-126.4-93.9 16. Link MargindB43.6511.15 Bandwidth : 1.8GHz Coding Gain : 3dB (Assumption) 1% PER (32 Octets/Packet, 200 Packets)

15. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 15 Location Awareness : Scenarios Criteria - Mobility of nodes - Density of nodes - Mobility of reference nodes - Position accuracy Mobility of Nodes - Stationary, movable, or mobile Density of Nodes - Dense or sparse Mobility of Reference Nodes - Stationary, movable, or mobile Position Accuracy - Exist or not - cm 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

16. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 16 Location Awareness – TDE Performance Employed a conventional correlation detection CM4 scenario without MUI Length of search region and Threshold was determined relative to the noise floor

17. Sep. 2004 Sung Yoon Jung doc.: IEEE 802. 15-04-0459-00-004a Submission Slide 17 Location Awareness : Measurement Time Measurement time is a limiting factor in accurate ranging & positioning Measurement time can be evaluated by For example, to acquire 0.7ns RMS accuracy when, and peak SNR = 5dB, then required = 2 required,where : length of search region : sampling rate : number of integrations