Fast communication: Blind adaptive affine projection algorithm-based multiuser detector over a multipath fading channel

Authors:
Daoming Zhang;Kun Wang;Xianda Zhang
Affiliations:
Department of Automation, Tsinghua University, Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China;Department of Automation, Tsinghua University, Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China;Department of Automation, Tsinghua University, Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China
Venue:
Signal Processing
Year:
2010

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Abstract

In this paper, we propose a novel blind adaptive multiuser detector based on the affine projection algorithm (APA) for asynchronous direct-sequence code-division multiple-access (DS-CDMA) systems over a multipath fading channel. Computational complexities of least mean-squares (LMS), Kalman filter and APA-based blind adaptive multiuser detector are compared. The proposed detector is shown to outperform the LMS detector and has similar convergence and detection properties as the Kalman filtering with much reduced computation cost.