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一种基于预解扩的判决反馈最小二乘恒模波束形成算法

傅洪亮1,2 , 酆广增1   

  1. 1.南京邮电学院 通信工程系 江苏 南京 210003;

    2.河南工业大学 信息科学与工程学院，河南 郑州 450052

  • 收稿日期:2004-09-03 修回日期:2004-10-24 出版日期:2006-01-31 发布日期:2006-01-31

A Decision-Feedback LSCM Beam-Forming Algorithm Based on Pre-despreading

FU Hong-liang1,2 FENG Guang-zeng1

  

  1. 1.Department of Communication Engineering, Nanjing University Of The Posts And Telecommunications,Nanjing,210003,China
    2. Institute of Information Science and Engineering,Henan University of Technolgoy.Zhengzhou 450052,China

  • Received:2004-09-03 Revised:2004-10-24 Online:2006-01-31 Published:2006-01-31

被引次数

5

摘要： 提出了一种基于预解扩的判决反馈最小二乘恒模波束形成算法。它是对DS-CDMA接收信号先进行预解扩，然后将判决反馈用于最小二乘恒模算法进行波束形成，并在加性白高斯和多径衰落信道的环境中进行了仿真。仿真结果表明，本文提出的D-LSCMAFB算法的信干比性能和误码率性能比传统的SDCMA算法和DRLSCMA算法要好。

关键词: 判决反馈, 恒模算法, 波束形成, 码分多址, 最陡下降法

Abstract: A new Least Squares Constant Modulus beam-forming Algorithm based on decision-Feedback using the pre-Despreading signals (D-LSCMAFB) in DS-CDMA system is proposed in this paper. This algorithm is simulated and compared with SDCMA and DRLSCMA in additive white Gaussian channel and multipath fading channel environments. Simulation results show that the proposed D-LSCMAFB algorithm is superior to SDCMA and DRLSCMA.

Key words: feedback, CMA, beam-forming, CDMA, SDCMA