Title :
Multiple antennas with a reduced iterative turbo decode for a DS/CDMA system
Author :
Yang, Hayoung ; Jung, Sungsoon ; Han, Sangchul ; Kang, Changeon ; Hong, Daesik
Author_Institution :
Dept. of Electr. & Comput. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
A combined diversity scheme of multiple turbo codes and multiple antennas for a synchronous direct sequence-code division multiple access (DS-CDMA) system over Rayleigh fading mobile radio channels is considered to improve the BER performance. In spite of the multiple structures, by employing a parallel mode decoding scheme the time delay becomes equivalent to that of a single turbo code system. Furthermore, the truncated trellis structure applied to MAP reduces the number of iterations from K for the original BCJR MAP to (K+1)/2 for the proposed MAP
Keywords :
Rayleigh channels; antenna arrays; cellular radio; code division multiple access; diversity reception; iterative decoding; maximum likelihood decoding; spread spectrum communication; turbo codes; BER performance; DS/CDMA system; MAP; Rayleigh fading mobile radio channels; diversity scheme; iterations; multiple antennas; multiple structures; multiple turbo codes; parallel mode decoding scheme; reduced iterative turbo decoding; synchronous direct sequence-code division multiple access; time delay; truncated trellis structure; Diversity reception; Fading; Iterative decoding; Mobile antennas; Multiaccess communication; Quadrature phase shift keying; Receiving antennas; Transmitters; Transmitting antennas; Turbo codes;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853696
