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    題名: Blind Capon-like adaptive ST-BC MIMO-CDMA receiver based on constant modulus criterion
    作者: Chern, Shiunn-Jang;Cheng, Ming-Kai;Chao, Po-Sun
    貢獻者: 淡江大學電機工程學系
    關鍵詞: Blind Capon receiver;MIMO-CDMA system;LCCM;Generalized sidelobe canceller;RLS algorithm;constrained optimization
    日期: 2013-12
    上傳時間: 2013-09-28 14:51:29 (UTC+8)
    出版者: Maryland Heights: Academic Press
    摘要: In this paper, we present a new Capon-like blind receiver based on linearly constrained constant modulus (LCCM) criterion for the multiple-input multiple-output (MIMO) antennas system along with space–time block code (ST-BC) using direct-sequence code division multiple access (CDMA) modulation technique. A time-varying channel model with generalized sidelobe canceller (GSC) associated with the recursive least squares (RLS) algorithm is implemented to reduce the complexity of receiver design. In our derived algorithm, the parameter of constant modulus, α, relating to the desired user power is updated adaptively via stochastic gradient algorithm to track user’s amplitude variation. Also we prove theoretically that in the two-branch filter bank receiver design the weight vector of one branch can be updated simply using the other one, which has been obtained with our proposed CM-GSC-RLS algorithm, with simple pre-calculated transform. Hence computation complexity of the proposed adaptive blind receiver can be further reduced significantly. Via intense simulations it reveals that our proposed scheme has robust performance against the user’s acquisition inaccuracies comparing with current available algorithms.
    關聯: Digital Signal Processing 23(6), pp.1958-1966
    DOI: 10.1016/j.dsp.2013.08.003
    顯示於類別:[電機工程學系暨研究所] 期刊論文


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