一种改进的盲自适应波束形成算法  

An improved blind adaptive beamforming algorithm

作　　者：傅洪亮[1] 酆广增[1] 

机构地区：[1]南京邮电学院通信工程系

出　　处：《电路与系统学报》2007年第6期115-118,114,共5页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(60472104);江苏省博士创新基金资助项目(xm04-32)

摘　　要：本文在最小二乘恒模(LSCMA)和梯度下降法(SDCMA)的基础上,提出了一种基于预解扩的判决反馈盲自适应波束形成算法,称为LS-SDCMA。本文分别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LS-SDCMA算法比传统的LSCMA、OCMA和SDCMA算法具有较强的抗多址干扰能力。A new blind adaptive beamforming algorithm based on decision feedback using pre-despreading signals is proposed in this paper. It combines LSCMA with SDCMA algorithm, and it is named LS-SDCMA. This new algorithm is simulated and compared with conventional LSCMA, OCMA and SDCMA in additive white Gaussian channel and multipath fading channel environments. Simulation results show that the proposed LS-SDCMA algorithm has the ability of strong MAI suppression and is superior to LSCMA, OCMA and SDCMA.

关 键 词：波束形成 判决反馈 预解扩 CDMA LSCMA SDCMA OCMA LS-SDCMA 

分 类 号：TN911.23[电子电信—通信与信息系统]