Title :
Multiuser detection in DS-CDMA systems based on a lattice code decoder
Author :
Dangl, M.A. ; Egle, J. ; Teich, W.G. ; Lindner, J.
Author_Institution :
Depariment of Inf. Technol., Ulm Univ., Germany
Abstract :
Usually, multiple access interference in DS-CDMA systems represents the capacity limiting factor. In this paper, we propose a multiuser detection algorithm based on a lattice code decoder that offers moderate computational complexity. The bit error rate converges asymptotically to the maximum-likelihood curve for large signal-to-noise ratios. Numerical results verify the performance in comparison to conventional detection schemes.
Keywords :
code division multiple access; computational complexity; error statistics; maximum likelihood decoding; multiuser detection; spread spectrum communication; DS-CDMA systems; bit error rate; bounded distance decoding; capacity limiting factor; computational complexity; joint detection; lattice code decoder; maximum-likelihood curve; multiple access interference; multiuser detection; multiuser detection algorithm; signal-to-noise ratios; Computational complexity; Decoding; Detectors; Information technology; Interference; Lattices; Matched filters; Multiaccess communication; Multiuser detection; Niobium;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1048592
