Optimum Hard-Decision Detector for Energy-Spreading Transform Based Multiple Access

Jaeho LEE  Taewon HWANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.6   pp.2243-2246
Publication Date: 2009/06/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2243
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
multiple access,  iterative,  energy spreading transform,  

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Summary: 
Multiple access based on energy spreading transform (EST) in [1] has been shown to effectively separate multiuser signals in an iterative manner. In this paper, an optimum hard-decision detector for the EST-based multiple access is proposed. The proposed scheme employs minimum mean square error (MMSE) processing at each iteration to enhance the performance of the original scheme. Analysis and simulation results show the significant performance improvement of the proposed scheme over the original method.