Title :
Space-time multi-user detection techniques for CDMA communication systems
Author :
Kaewpraek, Nikorn ; Chayawan, Chirasil
Author_Institution :
Dept. of Comput. Sci., King Mongkut´´s Univ. of Technol., Bangkok, Thailand
Abstract :
In this paper, we have proposed the method of Davidon-Fletcher-Powell (DFP) to solving the problem of multiuser detection (MUD). It can be shown that DFP significantly improves the performance of MUD by reducing the number of iterations and residual error. This technique also provides rapid convergence to the optimal value. The simulation shows that the DFP method can improve up to 30% of performance with 3-dB SNR.
Keywords :
code division multiple access; multiuser detection; space-time codes; CDMA communication systems; Davidon-Fletcher-Powell method; MUD; convergence; multiuser detection; reduced iterations; residual error; space-time detection; AWGN; Additive white noise; Convergence; Frequency division multiaccess; Gaussian noise; Matched filters; Multiaccess communication; Multiuser detection; Time division multiple access; Wireless communication;
Conference_Titel :
Communications and Information Technology, 2004. ISCIT 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8593-4
DOI :
10.1109/ISCIT.2004.1412449
