Iterative Demodulation and Channel Estimation of Orthogonal Signaling Formats in Asynchronous DS-CDMA Systems(<特集>Special Issue on Signals, Systems and Electronics Technology)

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概要

• 論文の詳細を見る

• Iterative schemes for demodulating M-ary orthogonal signaling formats in direct-sequence code-division multiple access (DS-CDMA) systems are proposed and compared with the standard noncoherent matched filter receiver. Interference cancellation, i.e., (approximative) removal of the multiple access interference (MAI) by means of subtraction is studied. The considered system is similar to the uplink (reverse link) of an IS-95 system. Hence, the received signals from the concurrent users are asynchronous, and no pilot signals are available for channel estimation. A decision-directed algorithm is proposed for estimating the time-varying complex channel gains of a multipath channel. The receivers are evaluated on Rayleigh-fading channels and are shown to provide large capacity gains compared with the conventional receiver.

• 社団法人電子情報通信学会の論文
• 2002-03-01

著者

• Miller Scott

  Department Of Pharmaceutical Sciences Medical University Of South Carolina

• Miller Scott

  Department Of Electrical Engineering Texas A&m Univ.

• Strom Erik

  Department Of Signals And Systems Chalmers Univ. Of Technology

関連論文

• Iterative Demodulation and Channel Estimation of Orthogonal Signaling Formats in Asynchronous DS-CDMA Systems(Special Issue on Signals, Systems and Electronics Technology)
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