Title :
Maximum-likelihood 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
fDate :
6/23/1905 12:00:00 AM
Abstract :
In this paper we consider the subchannel detection problem in forward links for a multicarrier 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 on 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 system model with the subchannel allocation policy in Pingyi Fan is feasible since only a few symbols overhead is required
Keywords :
cellular radio; channel allocation; code division multiple access; decision theory; maximum likelihood detection; spread spectrum communication; ML criterion; forward links; maximum-likelihood subchannel detection; multicarrier DS-CDMA system; optimal subchannel decision algorithm; overhead; parameter selection problem; subchannel allocation policies; training sequence; Analytical models; Bandwidth; Detection algorithms; Frequency diversity; Frequency synchronization; Maximum likelihood detection; Microwave communication; Multiaccess communication; Rayleigh channels; Signal processing;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944507
