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

Volume

8

fYear

2001

fDate

2001

Firstpage

2525

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2001. ICC 2001. IEEE International Conference on

Conference_Location

Helsinki

Print_ISBN

0-7803-7097-1

Type

conf

DOI

10.1109/ICC.2001.936605

Filename

936605