Title :
Optimal Selection of Weighting Factors for Variance-Reduced Partial Parallel Interference Cancellation in MC-CDMA Systems
Author :
Wang, Chin-Liang ; Chu, Chang-Chen
Author_Institution :
Dept. of Electr. Eng., National Tsing Hua Univ., Hsinchu
Abstract :
This paper presents an optimal weighting factor (OWF) selection algorithm for the variance-reduced partial parallel interference cancellation (VRPPIC) technique proposed by Wang and Wu in multicarrier code division multiple access systems. In this approach, a monotonically increasing conditional variance function of weighting factors derived from the VRPPIC operations is minimized under a system loading constraint so that the OWFs can be easily obtained. Simulation results show that the proposed algorithm can effectively enhance the system performance.
Keywords :
code division multiple access; interference suppression; MC-CDMA systems; VRPPIC operations; conditional variance function; multicarrier code division multiple access systems; multiple access interference; optimal weighting factor; system loading constraint; variance-reduced partial parallel interference cancellation; AWGN; Bit error rate; Communications Society; Interference cancellation; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection; Peer to peer computing; System performance;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.191
