DocumentCode :
2771449
Title :
Performance Analysis of Alamouti Coded OFDM Systems over Rayleigh Fading Channels Correlated in Space and Time
Author :
Ma, Yuanyuan ; Patzold, Matthias
Author_Institution :
Univ. of Agder, Grimstad, Norway
fYear :
2010
fDate :
16-19 May 2010
Firstpage :
1
Lastpage :
6
Abstract :
This paper deals with the performance analysis of Alamouti coded orthogonal frequency division multiplexing (OFDM) systems over time-varying multipath Rayleigh fading channels. In our analysis, we consider a physically more realistic channel, which can be correlated either in time or in space or even in both domains. We derive an analytical expression for the bit error probability (BEP), which describes the performance of an Alamouti coded OFDM system over fading channels correlated in space and time. It is shown that the derived BEP can be reduced to the known BEP obtained over fading channels correlated in time or space. The correctness of all theoretical results is validated by system simulations. The knowledge of the obtained theoretical results makes the BEP evaluation more straightforward and less time-consuming compared to simulations. Moreover, it allows us to discuss the effect of the maximum Doppler frequency and the antenna spacing on the system performance.
Keywords :
OFDM modulation; Rayleigh channels; error statistics; Alamouti coded OFDM systems; Rayleigh fading channels; antenna spacing; bit error probability; maximum Doppler frequency; orthogonal frequency division multiplexing; performance analysis; Block codes; Communication systems; Diversity methods; Error probability; Fading; OFDM; Performance analysis; System performance; Time varying systems; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st
Conference_Location :
Taipei
ISSN :
1550-2252
Print_ISBN :
978-1-4244-2518-1
Electronic_ISBN :
1550-2252
Type :
conf
DOI :
10.1109/VETECS.2010.5493855
Filename :
5493855
Link To Document :
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