A comparative study of pulse combining schemes for impulse radio UWB systems

Sinan Gezici, Hisashi Kobayashi, H. Vincent Poor

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

17 Scopus citations

Abstract

Impulse radio systems transmit a number of ultra-wideband pulses for each information bit. In a multiuser scenario, the pulses from a given user may have different signal-to-interference-plus-noise ratio (SIR) and therefore a receiver that combines these signals with equal weight assignment is suboptimal. In this paper, a multiuser impulse radio system over an additive white Gaussian noise channel is considered and the performances of three types of receivers that employ different pulse combining schemes are investigated. Namely, a conventional matched filter receiver, a blinking receiver and a minimum mean square error (MMSE) receiver are considered. Assuming a large number of pulses per information bit, approximate expressions of bit error probability for the conventional matched filter and blinking receiver are presented. Then, conditions under which one receiver has a lower probability of error than the other are obtained. Also an MMSE receiver is proposed, which optimally combines the pulses but has higher complexity compared to the other types of receivers. The simulation studies are employed to compare the performances of the receivers and to verify the analytical expressions.

Original languageEnglish (US)
Title of host publication2004 IEEE/Sarnoff Symposium on Advances in Wired and Wireless Communication
Pages7-10
Number of pages4
StatePublished - Aug 30 2004
Event2004 IEEE/Sarnoff Symposium on Advances in Wired and Wireless Communication - Princeton, NJ, United States
Duration: Apr 26 2004Apr 27 2004

Other

Other2004 IEEE/Sarnoff Symposium on Advances in Wired and Wireless Communication
CountryUnited States
CityPrinceton, NJ
Period4/26/044/27/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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