一種基于天線陣列的預(yù)處理盲多用戶檢測(cè)算法
A Pre-processing Blind Multiuser Detection Algorithm Using Antenna Arrays
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摘要: 該文提出了一種基于天線陣列的預(yù)處理判決反饋?zhàn)钚《撕隳Ｃざ嘤脩魴z測(cè)算法，稱為P-DFB-LSCMA算法。它是對(duì)天線陣列接收信號(hào)經(jīng)預(yù)處理，采用判決反饋?zhàn)钚《撕隳Ｋ惴ㄟM(jìn)行多用戶檢測(cè)。仿真結(jié)果表明，P-DFB-LSCMA算法比僅采用判決反饋?zhàn)钚《撕隳Ｋ惴?DFB-LSCMA)和傳統(tǒng)的LSCMA算法性能要好，特別在低信噪比下性能仍優(yōu)于后二者。
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關(guān)鍵詞:
- 天線陣列;盲多用戶檢測(cè);判決反饋;恒模算法;P-DFB-LSCMA
Abstract: A Pre-processing Decision-FeedBack Least Squares Constant Modulus blind multiuser detection Algorithm (P-DFB-LSCMA) using antenna arrays is proposed in this paper. It pre-processes the received signals from the antenna arrays and utilizes the least squares constant modulus algorithm based on decision feedback to detection the DS-CDMA signals. Simulation results show that the proposed P-DFB-LSCMA algorithm is superior to DFB-LSCMA and LSCMA, especially with low SNR. -
Purwoko A, Attallah S, Zoubir A M. Performance enhancement of adaptive blind multiuser detection for MC-CDMA using antenna arrays. Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002, 4 6 Aug, 2002: 288-292.[2]Wang X M, Lu W S, Antoniou A. A constant-modulus algorithm for blind multiuser detection in DS-CDMA systems with antenna array[J].2001. PACRIM. 2001 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 26 28 Aug.2001, vol.1:234-237[3]AGEE B. The least squares CMA: a new technique for rapid correction of constant signals. Proc ICASSP[C] Tokyo, Japan, 1986: 953-956 .[4]張賢達(dá)，保錚. 通信信號(hào)處理. 北京: 國(guó)防工業(yè)出版社， 2000： 326-335，383-388. -
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