Title :
On the performance of LDPC coded MC-CDMA in Rayleigh fading channels
Author :
Xiong, Lei ; Tan, Zhenhui ; Wen, Yighong ; Chen, Xia
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., China
Abstract :
In this paper, we evaluate the performance of LDPC coded MC-CDMA in Rayleigh fading channels. We derive an exact expression of the variance of multiuser interference and obtain the optimal maximum number of iterations in LDPC decoding. Compared to turbo coded MC-CDMA, the LDPC coded MC-CDMA has advantages in BER performance and complexity. The simulation results also show that the system using MMSEC outperforms the system using MRC in BER performance and complexity.
Keywords :
Rayleigh channels; channel coding; code division multiple access; error statistics; interference suppression; multiuser channels; parity check codes; performance evaluation; BER performance; LDPC; MC-CDMA; Rayleigh fading channel; bit error rate; low density parity check code; multicarrier code division multiple access; multiuser interference; performance evaluation; Bit error rate; Diversity reception; Equalizers; Fading; Gaussian noise; Interference; Multicarrier code division multiple access; Parity check codes; Signal to noise ratio; Turbo codes;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618132
