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arXiv 1302.4130cs.ITmath.IT
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基于参数联合迭代优化的自适应最小BER降秩干扰抑制算法

Adaptive Minimum BER Reduced-Rank Interference Suppression Algorithms Based on Joint and Iterative Optimization of Parameters

Yunlong Cai, Rodrigo C. de Lamare

摘要:

在这封信中,我们提出了一种新的自适应降秩策略的基础上联合迭代优化(JIO)的过滤器根据最小化的比特出错率(BER)的成本函数。所提出的优化技术调整的子空间投影矩阵和降秩滤波器的权重联合。我们开发了随机梯度(SG)算法的自适应实现,并介绍了一种新的自动秩选择方法的BER标准的基础上。直接序列码分多址(DS-CDMA)系统的仿真结果表明,所提出的自适应算法明显优于现有的方案。

英文摘要:

In this letter, we propose a novel adaptive reduced-rank strategy based on joint iterative optimization (JIO) of filters according to the minimization of the bit error rate (BER) cost function. The proposed optimization technique adjusts the weights of a subspace projection matrix and a reduced-rank filter jointly. We develop stochastic gradient (SG) algorithms for their adaptive implementation and introduce a novel automatic rank selection method based on the BER criterion. Simulation results for direct-sequence code-division-multiple-access (DS-CDMA) systems show that the proposed adaptive algorithms significantly outperform the existing schemes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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