EURASIP Journal on Applied Signal Processing 
Volume 2005 (2005), Issue 3, Pages 306-315
doi:10.1155/ASP.2005.306

Performance and Capacity of PAM and PPM UWB Time-Hopping Multiple Access Communications with Receive Diversity

Hao Zhang and T. Aaron Gulliver

 Department of Electrical & Computer Engineering, University of Victoria, V8W 3P6, BC, Canada
Received 29 September 2003; Revised 9 April 2004

Abstract

The error probability and capacity of a time-hopping ultra-wideband (UWB) communication system with receive diversity are investigated. We consider pulse amplitude modulation (PAM) and pulse-position modulation (PPM) over additive white Gaussian channels for a single-user system. A multiuser environment with PPM is also investigated. It is shown that the communication distance and error performance are improved by employing receive diversity. The channel capacity of PPM and PAM is determined subject to the power constraints of FCC part 15 rules to illustrate the relationship between reliable communication distance and signal-to-noise ratio. The error probability with PAM and receive diversity is derived for the single-user case. The error probability and performance bounds with PPM are derived for both the single-user and multiuser cases.