Performance evaluation of impulse radio UWB systems with pulse-based polarity randomization in asynchronous multiuser environments

Sinan Gezici, Hisashi Kobayashi, H. Vincent Poor, Andreas F. Molisch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

43 Scopus citations

Abstract

The performance of a binary phase shift keyed random time-hopping impulse radio system with pulse-based polarity randomization is analyzed. The effects of multiple access interference are investigated for both chip-synchronous and asynchronous systems. It is shown that the performance of a chip-synchronous system is the same as that for the symbol-synchronous case studied in [7]. The asynchronous system is modelled as a chip-synchronous system with uniformly distributed timing jitter on the transmitted pulses of interfering users. This extends the analytical technique developed for the chip-synchronous case to the asynchronous case. An approximate closed-form expression for the probability of error, expressed in terms of the autocorrelation function of the transmitted pulse, is derived for the asynchronous case. The analysis shows that the chip-synchronous assumption can result in over-estimating the error probability, and hence that the system design based on this approximation will be on the safe side. The degree of overestimation mainly depends on the autocorrelation function of the UWB pulse and signal-to-interference-plus-noise-ratio (SIR) of the system. Simulations studies support this approximate analysis.

Original languageEnglish (US)
Title of host publication2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
Pages908-913
Number of pages6
StatePublished - Sep 27 2004
Event2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 - Atlanta, GA, United States
Duration: Mar 21 2004Mar 25 2004

Publication series

Name2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
Volume2

Other

Other2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
CountryUnited States
CityAtlanta, GA
Period3/21/043/25/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Keywords

  • Asynchronous systems
  • Impulse radio (IR)
  • Multiple access interference (MAI)
  • Ultra-wideband (UWB)

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    Gezici, S., Kobayashi, H., Poor, H. V., & Molisch, A. F. (2004). Performance evaluation of impulse radio UWB systems with pulse-based polarity randomization in asynchronous multiuser environments. In 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 (pp. 908-913). (2004 IEEE Wireless Communications and Networking Conference, WCNC 2004; Vol. 2).