March 2003 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [PHY Proposal for the IEEE 802.15.3a standard] Date Submitted: [ “3 March, 2003”] Source: [Do-Hoon Kwon] Company [Samsung Electronics Co., Ltd. (SAIT)] Address [San14-1 Nongseo-Ri Kiheung-Eup, Yongin 449-712, Korea] Voice:[+82-31-280-6865], FAX: [+82-31-280-9555], E-Mail:[kwon22@sait.samsung.co.kr] Re: [IEEE 802.15.3a Call For Proposal] Abstract: [This document proposes Samsung Electronics Co., Ltd.(SAIT)’s PHY proposal for the IEEE 802.15.3a high rate alternate PHY standard.] Purpose: [PHY proposal for the IEEE 802.15.3a 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. Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Samsung Electronics Co., Ltd.(SAIT)’s PHY Proposal for IEEE 802.15.3a March 2003 Samsung Electronics Co., Ltd.(SAIT)’s PHY Proposal for IEEE 802.15.3a Do-Hoon Kwon (kwon22@sait.samsung.co.kr) Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

doc.: IEEE 802.15-<doc#> <month year> doc.: IEEE 802.15-<doc#> March 2003 Objective Effective use of the UWB spectrum Robust and scalable system design Immunity to narrowband interference Low-cost implementation Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT) <author>, <company>

Features The proposed system March 2003 Features The proposed system meets all the system performance requirements uses multi-band frequency plan transmits and receives Gaussian wavelets employs DPSK+PPM modulation can reject narrowband interferers with ease features low-complexity transceiver structures does not consume excessive power Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Samsung Electronics Co., Ltd.(SAIT) will be cooperating with: March 2003 802.15.3a Early Merge Work Samsung Electronics Co., Ltd.(SAIT) will be cooperating with: Discrete Time Communications FOCUS Enhancements General Atomics Intel Philips Time Domain Wisair Objectives: “Best” Technical Solution ONE Solution Excellent Business Terms Fast Time To Market We encourage participation by any party who can help us reach our goals. Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Frequency plan Multi-band frequency plan: 10 sub-bands of 700MHz width March 2003 Frequency plan Multi-band frequency plan: 10 sub-bands of 700MHz width The center frequencies are integer multiples of 700MHz fL=3.15GHz and fH=10.15GHz Spectrum reaches <-10dB at 3.1 & 10.6GHz Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Time domain waveform Pulse width in time March 2003 Time domain waveform 0.3162 0.7071 2.1ns 1.15ns Pulse width in time 1.15ns (-3dB), 2.1ns (-10dB) Zero crossings are dictated by the sub-band center frequency Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Time frame structure Single time frame comprises March 2003 Time frame structure Two time slots of 2.5ns duration 66.4ns of guard time for multi-path immunity 5 71.4 t (ns) Single time frame comprises Two time slots of duration 2.5ns each Each slot can hold a single Gaussian wavelet Followed by 66.4ns of guard time Significant multi-path components are expected to be contained in the guard time The symbol period is 71.4ns (optional 35.7ns) The symbol rate is 14Msps per band (optional 28Msps) Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Wavelet positions and corresponding bits March 2003 Modulation Wavelet positions and corresponding bits X0 X1 2-level PPM 5 t (ns) X00 X01 X11 X10 4-level PPM(optional) 10 t (ns) DPSK+PPM modulation Pulse Position Modulation part One Gaussian wavelet takes one of the two time slots  determines one bit 2-level PPM (optional 4-level PPM) Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Modulation (continued) March 2003 Modulation (continued) Wavelet polarity 00 No change in polarity t X0 t 11 Change in polarity t DPSK+PPM modulation Differential Bi-Phase Shift Keying part The first bit is determined by polarity change of consecutive Gaussian wavelets DPSK allows non-coherent detection Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Multi-band transmission March 2003 Multi-band transmission Pulse position Band a Band b Band c Band d Band e 10 20 30 40 50 60 70 80 t Multiple bands are simultaneously used for higher throughputs Wavelet transmission in different bands are skewed in time Time-skewing may reduce transmitter complexity A minimum number of PLLs are required Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Data Throughput (PRF=14MHz) March 2003 Data Throughput (PRF=14MHz) Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Data Throughput (PRF=28MHz) March 2003 Data Throughput (PRF=28MHz) Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

March 2003 Link Budget Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Coexistence with narrowband interferer March 2003 Coexistence with narrowband interferer IEEE 802.11a is the strongest narrowband interferer Coexistence mode Do not use band #3 and band #4 for coexistence with IEEE 802.11a WLAN devices Channel allocation can be dynamically assigned depending on channel monitoring results Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Regulatory Impact Geopolitical scope March 2003 Regulatory Impact Geopolitical scope Multi-band usage pattern can be dynamically configured depending on location of usage Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Scalability Data rates Frequencies of operation Power consumption March 2003 Scalability Data rates 110Mbps is supported by six-band transmission Higher data rates are supported by multi-band parallel transmission 504Mbps: 4-level PPM+DPSK, 9 band transmission, PRF=28MHz Lower data rates are supported by single-band transmission 19Mbps: 2-level PPM+DPSK, 1 band transmission, PRF=14MHz Frequencies of operation As the UWB frequency band expands, more sub-bands can be defined Power consumption For low data rates, single-band mode operation reduces power consumption Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Multi-Path Immunity Sufficient guard time March 2003 Multi-Path Immunity Received signal Desired signals Multi-path interference 5 71.4 76.4 t (ns) Sufficient guard time 25.7-66.4ns provide immunity to multi-path interference components Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

General Solution Criteria March 2003 General Solution Criteria Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

PHY Solution Criteria March 2003 Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)

Conclusions The system uses The system features March 2003 Conclusions The system uses 10 sub-bands of 700MHz bandwidth Gaussian wavelets DPSK+PPM modulation The system features high scalability in data rates coexistence with narrowband interference non-coherent detection scheme (for receivers) small number of frequency generators immunity to multi-path interference Do-Hoon Kwon, Samsung Electronics Co., Ltd.(SAIT)