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    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/24329


    題名: BER Analysis of the Optimum Multiuser Detection With Channel Mismatch in MC-CDMA Systems
    Authors: 陳榮杰
    Jung-Chieh Chen;Pangan Ting;Chao-Kai Wen
    貢獻者: 光電與通訊工程學系
    Keywords: Belief propagation (BP);channel mismatch;multicarrier code-division-multiple access (MC-CDMA);multiuser detection (MUD);replica method
    Date: 2006-06
    Issue Date: 2015-06-03 15:18:10 (UTC+8)
    Abstract: In this paper, we analyze the bit-error-rate (BER) performance of the optimum multiuser detection (MUD) with channel mismatch in multicarrier code-division-multiple-access (MC-CDMA) systems. The BER performance of the optimum MUD without channel mismatch in MC-CDMA systems has been recently derived using the replica method. However, it is left unjustified, since the replica method is not a rigorous approach. In addition, it is NP-hard to implement an optimum MUD algorithm. To justify the BER performance and to make the optimum MUD feasible, based on Pearl's belief propagation (BP) scheme, we put together a low-complexity iterative MUD algorithm for MC-CDMA systems. Furthermore, channel mismatch is introduced into the BP-based MUD algorithm to make the scenario general. With channel mismatch, the analytical results of the BP-based MUD algorithm conform perfectly to, and the simulation results of the BP-based MUD algorithm conform very closely to the BER performance of the optimum MUD derived using the replica method, which is a nontrivial extension of the existing replica approach mentioned above. Without channel mismatch, the problem becomes a special case of our contribution.
    關聯: IEEE Journal on Selected Areas in Communications / vol. 24, no. 6, pp. 1221-1235, June 2006, DOI: 10.1109/JSAC.2005.864009
    Appears in Collections:[光電與通訊工程學系] 期刊論文
    [光通系] 陳榮杰

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