Title :
Low complexity iterative receiver for non-orthogonal space-time block code with channel coding
Author :
Bouvet, Pierre-Jean ; Hélard, Maryline ; Le Nir, Vincent
Author_Institution :
France Telecom R&D, Cesson-Sevigne, France
Abstract :
In this paper, we study the association of nonorthogonal space-time block coding (NO-STBC) with channel coding and propose an efficient iterative receiver. For two transmit antennas, the use of the Alamouti scheme as STBC is optimal owing to its orthogonality and its unitary rate. For more than two antennas, full rate is maintained by giving up the orthogonality. This nonorthogonality makes the decoding often complex and sub-optimal in terms of exploitation of the diversity. In this paper, we present a low complexity receiver based on iterative process performing jointly space-time decoding and channel decoding. Simulations over uncorrelated Rayleigh flat fading channels show that such a receiver exploits at best the space-time diversity provided by the nonorthogonal STBC and the channel coding.
Keywords :
Rayleigh channels; block codes; channel coding; diversity reception; iterative decoding; space-time codes; transmitting antennas; Alamouti scheme; NO-STBC; block code; channel coding; channel decoding; iterative process; low complexity iterative receiver; nonorthogonal space-time block coding; space-time decoding; space-time diversity; transmit antennas; uncorrelated Rayleigh flat fading channels; Block codes; Channel coding; Diversity reception; Interference; Iterative decoding; Maximum likelihood decoding; Rayleigh channels; Space time codes; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400231