Title :
SINR for DS-CDMA with random spreading
Author :
Chiang, P.-H. ; Lin, D.-B. ; Li, H.-J.
Author_Institution :
Graduate Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
6/2/2006 12:00:00 AM
Abstract :
For wireless multipath fading channels, the performance of a direct-sequence code-division multiple-access (DS-CDMA) system is degraded by the interferences, including the multipath interference (MPI) and the multiuser interference (MUI). For the downlink DS-CDMA with random spreading, we derive the variances of the interferences and obtain the signal-to-interference-plus-noise ratio (SINR). The simple and elegant expressions for the variances of the interferences provide useful insights, while the corresponding SINR representation is helpful in evaluating the bit-error-rate (BER) performance that takes the impact of the interferences into consideration. In order to demonstrate our approach, an example regarding the performance analysis of the two-input-single-output (2ISO) space-time block coded DS-CDMA with RAKE reception is also provided.
Keywords :
block codes; channel coding; code division multiple access; error statistics; fading channels; multipath channels; radio links; radiofrequency interference; random sequences; space-time codes; spread spectrum communication; wireless channels; 2ISO space-time block code; BER performance; MPI; MUI; RAKE reception; SINR; bit-error-rate; direct-sequence code-division multiple-access; downlink DS-CDMA; multipath interference; multiuser interference; random spreading; signal-interference-plus-noise ratio; two-input-single-output; wireless multipath fading channel;
Journal_Title :
Communications, IEE Proceedings-
DOI :
10.1049/ip-com:20045235
