Title :
Performance and complexity of CDMA iterative multiuser detection
Author :
Schlegel, Christian ; Shi, Zhenning
Author_Institution :
Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
Low complexity multistage filters are inserted into the soft-information exchange paths of an iterative joint detector for error control coded CDMA signals. It is shown that these filters approach the performance of the optimal, but complex, per-user minimum-mean square error filter with a few stages. A variance transfer analysis is presented to quantify the performance of this method and to study the case of unequal received power distributions.
Keywords :
code division multiple access; computational complexity; error correction codes; filtering theory; iterative methods; multiuser detection; statistical analysis; statistical distributions; CDMA iterative multiuser detection; error control coded signals; iterative detection; multistage filters; per-user minimum-mean square error filter; soft-information exchange paths; unequal received power distributions; variance transfer analysis; Analysis of variance; Detectors; Error correction; Gaussian noise; Integrated circuit modeling; Interference; Iterative decoding; Multiaccess communication; Multiuser detection; Nonlinear filters;
Conference_Titel :
Information Theory Workshop, 2003. Proceedings. 2003 IEEE
Print_ISBN :
0-7803-7799-0
DOI :
10.1109/ITW.2003.1216707
