DocumentCode :
983779
Title :
Theoretical performance analysis of single and multiple antenna BFWA systems
Author :
Xiao, P. ; Carrasco, R. ; Wassell, I.
Author_Institution :
Sch. of Electr., Univ. of Newcastle Upon Tyne
Volume :
1
Issue :
3
fYear :
2007
fDate :
6/1/2007 12:00:00 AM
Firstpage :
496
Lastpage :
506
Abstract :
The systems under investigation are broadband fixed wireless access (BFWA) systems operating in multipath fading channels. Conventional detection methods, for example, coherent detection for single-input single-output systems and the Alamouti algorithm for multiple-input multiple-output systems are examined theoretically and shown to yield unsatisfactory performance. The theoretical analyses are validated by Monte-Carlo simulations and are demonstrated to be accurate. The asymptotic performance of the space-time block coded (STBC) system with the-Alamouti transmission scheme is also evaluated. However, the results indicate that the performance lower bound cannot be obtained in an uncoded system due to the error propagation problem, which can be tackled by concatenating the STBC system with an outer channel code and applying the turbo processing principle. Theoretical performance analysis provides an insight into the physical limitations imposed by BFWA channels and suggest solutions to improve the capacity and performance of future BFWA systems
Keywords :
antenna arrays; block codes; broadband networks; channel coding; concatenated codes; fading channels; multipath channels; radio access networks; signal detection; space-time codes; Alamouti transmission scheme; Monte-Carlo simulations; STBC system; asymptotic performance; broadband fixed wireless access systems; concatenation; detection methods; error propagation problem; multipath fading channels; multiple antenna BFWA system; outer channel code; performance lower bound; single antenna BFWA system; space-time block coded system; system capacity; turbo processing; uncoded system;
fLanguage :
English
Journal_Title :
Communications, IET
Publisher :
iet
ISSN :
1751-8628
Type :
jour
DOI :
10.1049/iet-com:20060168
Filename :
4247336
Link To Document :
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