Title :
Analysis of hardlimiting parallel interference cancellation (PIC) for synchronous CDMA communication
Author :
Yu-Nan Lin ; Lin, David W.
Author_Institution :
Dept. of Electron. Eng. & Center for Telecommun. Res., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
Parallel interference cancellation (PIC) is a widely considered approach to multiuser detection in CDMA communication. While PIC receivers normally involve nonlinear functions, previous performance analyses mainly addressed linear PIC. We find that the performance of purely hardlimiting PIC may not improve after the second stage. In addition, for the two-user case, one stage usually suffices. Further, the performance of hardlimiting PIC does not approach the single-user limit. We also develop approximate expressions for numerical evaluation of the hardlimiting PIC performance. Simulation results agree well with the analysis.
Keywords :
code division multiple access; interference suppression; multiuser channels; receivers; signal detection; synchronisation; CDMA communication; PIC; PIC receivers; multiple access interference; multiuser detection; nonlinear functions; parallel interference cancellation; second stage; two-user case; AWGN; Analytical models; Bit error rate; Code division multiplexing; Error analysis; Interference cancellation; Multiaccess communication; Multiple access interference; Multiuser detection; Performance analysis;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010628
