Submission Title: [TG3a Compromise Proposal] March 2005 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TG3a Compromise Proposal] Date Submitted: [March 2005] Source: [Ismail Lakkis] Company [Wideband Access, Inc] Address [10225 Barnes Canyon Rd, #A209, SD USA] Voice:[858-231-9753], E-Mail:[ilakkis @widebandaccess.com] Re: [] Abstract: [Proposal for a compromise on TG3a] Purpose: [Propose how TG3a can move forward from current PHY selection deadlock] 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. Ismail Lakkis, Wideband Access, Inc.

TG3a Deadlock Two different PHY proposals: March 2005 TG3a Deadlock Two different PHY proposals: MB-OFDM DS-UWB Combining the two PHY layers is not feasible: Technically too different Too late to do so Ismail Lakkis, Wideband Access, Inc.

Proposal One frequency plan and Two PHY Layers March 2005 Proposal One frequency plan and Two PHY Layers Implementers can implement either PHY or both Digital cost and power consumption is very low, design cycle is fast RF CMOS or SiGe design cycle is longer and more costly Ismail Lakkis, Wideband Access, Inc.

Frequency Plan Frequency Span (3168MHz-4752MHz) BW = 1584 MHz March 2005 Frequency Plan Frequency Span (3168MHz-4752MHz) BW = 1584 MHz Center Frequency = 3960 MHz f 3432 MHz 3960 4488 Band #1 Band #2 Band #3 Ismail Lakkis, Wideband Access, Inc.

Implications on MB-OFDM March 2005 Implications on MB-OFDM PLL can already generate all appropriate frequencies for both PHYs MB-OFDM will benefit from a wider bandwidth (1584MHz) for high data rate applications above 480MHz Ismail Lakkis, Wideband Access, Inc.

Implications on MB-OFDM March 2005 Implications on MB-OFDM No change is required to the Receive chain since for high data rate mode, the Band Select filter is a Channel Select Filter Sub-Band (528 MHz) channel select filter can be bypassed or make it programmable bandwidth Ismail Lakkis, Wideband Access, Inc.

Implications on MB-OFDM March 2005 Implications on MB-OFDM Transmitter would not require changes Transmitter analog pulse shaping can be bypassed for the high data rate mode or made programmable Ismail Lakkis, Wideband Access, Inc.

Implications on DS-UWB March 2005 Implications on DS-UWB Significant change to piconets center frequencies 3960 + n*12 , n = 1…6 change XO and frequency Plan Scale PHY for a higher chipping rate Radio has to be changed to support new frequency plan Ismail Lakkis, Wideband Access, Inc.