Title :
An Improved Parallel Interference Cancellation Algorithm in DS/CDMA Communication System
Author :
Xin, Geng ; Hanying, Hu ; Zhengjun, Liu
Abstract :
This paper introduces an improved parallel interference cancellation algorithm in a DS/CDMA communication system. Because of the lack of the energy information of interfering signal in the conventional parallel interference cancellation (PIC) algorithm, the detection performance of the weak signals is not improved. The algorithm introduced in this paper takes advantage of the virtue of successive interference cancellation (SIC) algorithm and improves greatly the detection performance of weak signals by reducing the error of multi-access interference estimation through classifying the signals. Bit error rate of this improved algorithm has theoretically been analyzed in detail. Simulation results have been given for a multitude of different situations. Finally, it is concluded that the performance of this new algorithm is more desirable than that of the conventional one
Keywords :
code division multiple access; error statistics; interference suppression; radiofrequency interference; signal classification; signal detection; spread spectrum communication; DS-CDMA communication system; bit error rate; direct sequence code division multiple access; multiaccess interference; parallel interference cancellation algorithm; signal classification; successive interference cancellation; weak signal detection; AWGN; Algorithm design and analysis; Bit error rate; Communication systems; Detectors; Interference cancellation; Multiaccess communication; Power engineering and energy; Signal processing algorithms; Silicon carbide;
Conference_Titel :
Computer and Information Technology, 2005. CIT 2005. The Fifth International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7695-2432-X
DOI :
10.1109/CIT.2005.72
