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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/32869

Title: Reliable decision-aided multiuser detection for cooperative CDMAs
Authors: Hoang-Yang LU;Yen-Yu CHEN
Contributors: NTOU:Department of Electrical Engineering
Keywords: multiuser detection;cooperative communication;code division multiple access
Date: 2011-09-01
Issue Date: 2012-06-18T07:45:20Z
Publisher: IEICE Trans. Fundamental
Abstract: Abstract:
Summary:In this paper, we propose a simple, yet effective, multiuser detection scheme for a two-hop cooperative CDMAs. In phase 1, the minimum mean square error (MMSE) detector at the destination is used to identify reliable decisions of direct transmissions from the sources and return them to the relays. Then, in phase 2, based on the reliable decisions, the relays and the destination successively utilize the maximum likelihood (ML) detectors to estimate the residual symbols. Due to the destination estimating the symbols separately from direct transmissions and the relaying signals, as a result the destination does not need the information about the relays' decision performance for the construction of the ML detector. Hence, the proposed scheme is more feasible than existing approaches for practical implementation. In addition, due to the ML detectors in phase 2 only estimating the residual symbols, the number of computations performed by the ML detectors can be reduced significantly. The results of simulations and complexity analysis demonstrate the efficiency and effectiveness of the proposed scheme.
Relation: E94-A(9), pp.1892-1895
URI: http://ntour.ntou.edu.tw/handle/987654321/32869
Appears in Collections:[電機工程學系] 期刊論文

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