1. Submission Title: [TG3a Compromise Proposal]
March 2005
Project: IEEE P 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:[ ],
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 P 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 P
Ismail Lakkis, Wideband Access, Inc.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. Implications on DS-UWB
March 2005
Implications on DS-UWB
Significant change to piconets center frequencies
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.