Title :
Maximum-likelihood algorithm on the subchannel detection in forward links for multicarrier DS CDMA system
Author :
Li, Jianjun ; Fan, Pingyi ; Cao, Zhigang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper, we consider the subchannel detection problem in forward links for the multicarrier (MC) DS-CDMA system when some different subchannel allocation policies are used. An optimal subchannel decision algorithm is proposed based on the maximum-likelihood (ML) criterion. The theoretical analysis and simulation results are presented. We also discuss the parameter selection problem for the length of the training sequence in the system model in Pingyi Fan et al. by using the proposed ML detection algorithm. The results show that the subchannel allocation schemes in Pingyi Fan et al. is feasible since only a few symbols overhead are required
Keywords :
cellular radio; code division multiple access; maximum likelihood detection; spread spectrum communication; forward links; maximum-likelihood algorithm; multicarrier DS-CDMA system; optimal subchannel decision algorithm; parameter selection problem; subchannel allocation policies; subchannel detection; training sequence; Analytical models; Bandwidth; Channel allocation; Detection algorithms; Digital communication; Frequency diversity; Frequency synchronization; Maximum likelihood detection; Multiaccess communication; Signal processing;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936605
