Outage evaluation of ultra wideband spread spectrum system with RAKE combining in lognormal fading multipath channels

Author

Pirinen, Pekka

Author_Institution

Centre for Wireless Commun., Oulu Univ., Finland

Volume

4

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

2446

Abstract

Ultra wideband (UWB) spread spectrum system capacity is studied. User capacity is evaluated analytically against the conditional outage criterion. The probability of outage varies depending on the multipath channel intensity profile, severity of shadowing, signal-to-interference ratio target, number of users, timing errors, and the number of fingers combined in the RAKE receiver. The sum of lognormally distributed signals is mainly modelled by a Fenton-Wilkinson approximation. Numerical results show that the outage performance is quite sensitive to the variation of several key parameters.

Keywords

approximation theory; diversity reception; fading channels; multipath channels; probability; radio receivers; spread spectrum communication; ultra wideband communication; Fenton-Wilkinson approximation; RAKE receiver; lognormal fading multipath channel; signal-to-interference ratio; ultra wideband spread spectrum system; Delay; Fading; Fingers; Multipath channels; Random variables; Shadow mapping; Spread spectrum communication; Timing; Ultra wideband technology; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on

Print_ISBN

0-7803-8523-3

Type

conf

DOI

10.1109/PIMRC.2004.1368759

Filename

1368759