Date Submitted: [17-Nov-2005] Source: [Laurent Ouvry] November 2005 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Modulation for the nominal 100kbps optional bit rate ] Date Submitted: [17-Nov-2005] Source: [Laurent Ouvry] Company [CEA-Leti] Address [17 rue des Martyrs 38054 Grenoble] Voice:[+33-4-38-38-93-88 ], FAX: [+ 33-4-38-38-51-59 ], E−Mail: [laurent.ouvry@cea.fr] Re: [802.15.4a.] Abstract: [Propose a modulation for the 100 kbps bitrate option built the same way than for other bit rate options ] Purpose: [To promote discussion in 802.15.4a.] 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. L. Ouvry — CEA-Leti

November 2005 Objective Propose a modulation for the low data rate option (nominal 100 kbps) which is built the same way than for the other rates L. Ouvry — CEA-Leti

Mandatory Mode Modulation & Coding (from 681r0) November 2005 Mandatory Mode Modulation & Coding (from 681r0) L. Ouvry — CEA-Leti

November 2005 Modulation L. Ouvry — CEA-Leti

Coding Reed Solomon Primitive polynomial: Generator polynomial: November 2005 Coding Reed Solomon Primitive polynomial: Generator polynomial: L. Ouvry — CEA-Leti

Optional low bit rate Mode November 2005 Optional low bit rate Mode Same approach than for optional higher rates : Increase symbol duration Proportionally increase number of pulses in the burst to keep mean PRF constant L. Ouvry — CEA-Leti

Modulation & Coding options November 2005 Modulation & Coding options Data Rate (MHz) Tburst Tsymbol Mean PRF #active pulses per burst Viterbi (same) RS 0.811 ~32ns ~1.04us ~15.44 16 Y 0.101 ~256ns ~8.29us 128 ~8ns ~3.86 4 ~64s 32 L. Ouvry — CEA-Leti

November 2005 Conclusions Proposal for a modulation scheme suitable for the nominal ~100 kbps option Built straightforwardly from the other bit rate modes Suitable for the coherent receiver Suitable for the non coherent receiver L. Ouvry — CEA-Leti