doc.: IEEE 802.15-<doc#> <month year> doc.: IEEE 802.15-<doc#> October, 2005 Project: IEEE 802.15 Study Group for Wireless Personal Area Networks (WPANs) Submission Title: [Temporal and Spectral Properties of TG4a Modulation Waveform] Date Submitted: [October 2005] Source: [Shahriar Emami and Celestino A. Corral]: Company1 [Freescale Semiconductor] Address [Freescale Semiconductor, Inc. 6100 Broken Sound Pkwy., N.W. Suite 1 Boca Raton, FL  33487-2790] Voice: [(561) 544-4064 ] Re: [802.15.4a] Abstract: [Captures the temporal and spectral behavior of TG4a modulation.] Purpose: [To assist designers in determination of modulation parameters] 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. Shahriar Emami, Freescale Semiconductor <author>, <company>

Modulation [15-05-0528-00-004a] October, 2005 Shahriar Emami, Freescale Semiconductor

Transmitter Architecture October, 2005 Transmitter Architecture Shahriar Emami, Freescale Semiconductor

October, 2005 Transmitted Waveform PAPR of the waveform is a function of code sequence, pulse shape and the duty cycle of the UWB signal. Shahriar Emami, Freescale Semiconductor

October, 2005 PAPR of the Burst The peak-to-average power (PAPR) of these binary code sequences with RC shaping is always 8.5 (9.2 dB). Shahriar Emami, Freescale Semiconductor

FEC Rate Options [15.05-0600-00-004a] October, 2005 FEC Rate Options [15.05-0600-00-004a] PAPR = 10log(8.5)+10log(4) = 15.2 dB Shahriar Emami, Freescale Semiconductor

Convolutional Encoder October, 2005 FEC Options [15.05-0601-00-004a] PRF = 247 and 494 MHz PRF= 247 MHz  PAPR= 9.2+10log(32) = 24.2 dB PRF= 494 MHz  PAPR= 9.2+10log(64) = 27.2 dB Coherent Receiver: Convolutional code Rate = 1/3 Non Coherent Receiver: Convolutional code Rate = 1/2 Convolutional Encoder K= 3,4 or 5 R= 1/3 FEC 6 Shahriar Emami, Freescale Semiconductor

PSD of the transmitted waveform October, 2005 PSD of the transmitted waveform ~1.5 dB averaged over 1 msec Shahriar Emami, Freescale Semiconductor

Summary The PAPR of the UWB binary code burst is 8.5. October, 2005 Summary The PAPR of the UWB binary code burst is 8.5. The PAPR of the modulation waveform varies between 15 to 27 dB depending on the selected PRF. The PSD of the transmitted waveform averaged over 1 ms shows about 1.5 dB spectral variation. Shahriar Emami, Freescale Semiconductor