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

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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_at_etri.re.kr, (2)
syjung_at_kaist.ac.kr, (3) joonlee_at_handong.edu Abstr
act 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
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Multi-Coded Bi-orthogonal PPM (MC-BPPM) Impulse
Radio Technology
presented by Sung Yoon Jung ETRI-KAIST-HGU Rep
ublic of Korea
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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

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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)

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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
High band
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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
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Pulse Design Low Band Example (2)

• Chaotic pulse
• - Large base signal (base2bandwidthduration)
• - Flexible bandwidth and signal duration

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PHY Frame Structure

• Frame structure of PPDU (example)

SHR
PHR
PHY load
Byte
Preamble
SFD
PHR
PSDU
bit
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Multi-Coded Bi-orthogonal PPM (MC-BPPM)

• Operation example (L3, Ns4, Nr1, Tg0ns)

PPM
Bi-orthogonal PPM
1
-3
1
1
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Transceiver Architecture

• Transmitter Architecture

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Transceiver Architecture (Contd)

• Receiver Architecture

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Data Rate

• Low band modes (example)

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Simultaneous Operating Piconets (SOP)

• Time Division
• - Time-separated superframe among piconets
• Code Division
• - Time-hopping code for each piconet

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Link Budget

• Bandwidth 1.8GHz
• Coding Gain 3dB
• (Assumption)
• 1 PER
• (32 Octets/Packet,
• 200 Packets)

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Location Awareness Scenarios
Sensor network by UWB
UWB tag
UWB tag
UWB tag
Wake up Yellow shirts.

• 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

Information
UWB tag
UWB tag
UWB tag
UWB tag
UWB tag
UWB tag
Nodes are stationary
Nodes are mobile
Source IEEE 15-03-0537-00-004a
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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

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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