Title :
Design of partially adaptive STBC CDMA receiver using conjugate gradient algorithm
Author :
Lin, Gau-Joe ; Lin, Tsui-Tsai ; Lee, Ta-Sung
Author_Institution :
Dept. of Commun. Eng., National Chiao Tung Univ., Hsinchu
Abstract :
A novel partially adaptive (PA) receiver with MAI suppression is proposed for an STBC CDMA system under the multipath fading channels. A low-complexity PA realization of the receiver is developed based on the generalized sidelobe canceller (GSC) technique which partial adaptivity is incorporated via the conjugate gradient (CG) algorithm for reduced complexity implementation. The proposed PA receiver is evaluated through simulations, and the results show that it can achieve nearly the same performance of the conventional fully adaptive MMSE receiver by using a small number of pilot symbols
Keywords :
adaptive modulation; block codes; code division multiple access; conjugate gradient methods; radio receivers; space-time codes; MAI suppression; STBC CDMA; adaptive MMSE receiver; conjugate gradient algorithm; generalized sidelobe canceller; multipath fading channels; partially adaptive receiver; Algorithm design and analysis; Antenna arrays; Block codes; Character generation; Fading; Filters; Multiaccess communication; Multiuser detection; Receiving antennas; Transmitting antennas;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Conference_Location :
Tainan
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412778
