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Maximum-Likelihood Subchannel Detection in Forward Links for Multicarrier DS CDMA System
IEICE TRANSACTIONS on Communications
Publication Date: 2001/11/01
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
subchannel detection, multicarrier CDMA, wireless communication,
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In this paper, we consider the subchannel detection problem in forward links for the 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. Theoretical analysis and simulation results are presented. Furthermore, we discuss the parameter selection problem on the length of the training sequences in the subchannel allocation scheme in , by using the proposed ML detection algorithm. The results show that the subchannel allocation scheme in , is feasible since only a few symbols overhead is required.