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改进的OPAST算法及其在盲多用户检测中的应用

Improved OPAST algorithm and its application in the blind multiuser detection
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摘要 文中详细地介绍了正交投影子空间跟踪算法(OPAST),它是一种基于最优化问题的方法,保证了每次迭代时权向量的正交性,并具有和PAST算法一样的线性复杂度,以及与自然幂法(NP)一样的全局收敛性。然而将其应用于盲多用户检测时,在迭代一定次数后,会出现误码率突然增大现象,这就导致了算法性能的下降,为了解决这一问题,文中提出一种方法,并通过仿真结果,证明它是行之有效的。 The orthonormal projection approximation and subspace tracking algorithm （OPAST） is introduced. It is a kind of method based on the theory of optimum. It guarantees the orthonormality of the weight matrix at each iteration. Moreover it has a linear complexity like the PAST algorithm and a global convergence property like the natural power （NP） method. However it can appear suddenly increase ber phenomenon after a certain numbem of iteration, when it is applied to the blind muhiuser detection.It lead to decline in the performance.In order to solve this problem, this paper puts forward a method, and prove it is effective through the results of the simulation.
作者 王豪 张捷 任松育
机构地区 西北工业大学电子信息学院
出处 《电子设计工程》 2012年第13期101-103,107,共4页 Electronic Design Engineering
关键词 OPAST算法 盲多用户检测 自适应算法 误码率 OPAST algorithm blind multiuser detection adaptive algorithm BER
分类号 TN929.533 [电子电信—通信与信息系统]
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参考文献5

  • 1钱林杰,程翥,石斌斌,刘海涛,万建伟.一类子空间跟踪方法的改进[J].信号处理,2010,26(5):741-745. 被引量：2
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二级参考文献10

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电子设计工程
2012年 第13期

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