时空均衡子带阵列的收敛性能

信号处理 Pub Date : 2001-08-06 DOI:10.1109/SSP.2001.955343

Yimin D. Zhang, Kehu Yang, M. Amin

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引用次数: 5

摘要

子带阵列是数字移动通信中实现联合时空均衡的有效手段。它们用于减轻码间干扰(ISI)和同信道干扰(CCI)引起的信道损伤问题。提出了信道均衡的归一化子带阵列和局部正交子带阵列技术。采用最小二乘平均(LMS)算法进行自适应。分析了该技术的收敛性能，并与传统的时空自适应处理(STAP)技术进行了比较。结果表明，子带分解在实现时空均衡方面具有很大的灵活性。分析和数值模拟结果表明，所提出的子带阵列技术在没有大量额外计算的情况下显著提高了收敛性能。

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Convergence performance of subband arrays for spatio-temporal equalization

Subband arrays have been proposed as a useful means to realize joint spatio-temporal domain equalization in digital mobile communications. They are used to mitigate channel impairment problems caused by inter-symbol interference (ISI) and co-channel interference (CCI). We propose normalized subband array and locally orthogonalized subband array techniques for channel equalization. The least square mean (LMS) algorithm is used for adaptation. The convergence performance of the proposed techniques is analyzed and compared with that of conventional space-time adaptive processing (STAP) techniques. It is shown that subband decompositions provide great flexibility in implementing spatio-temporal equalization. Both analytical and numerical simulation results demonstrate that the proposed subband array techniques substantially improve the convergence performance without significant additional computations.

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来源期刊

信号处理

自引率

0.00%

发文量

5812

期刊介绍： Journal of Signal Processing is an academic journal supervised by China Association for Science and Technology and sponsored by China Institute of Electronics. The journal is an academic journal that reflects the latest research results and technological progress in the field of signal processing and related disciplines. It covers academic papers and review articles on new theories, new ideas, and new technologies in the field of signal processing. The journal aims to provide a platform for academic exchanges for scientific researchers and engineering and technical personnel engaged in basic research and applied research in signal processing, thereby promoting the development of information science and technology. At present, the journal has been included in the three major domestic core journal databases "China Science Citation Database (CSCD), China Science and Technology Core Journals (CSTPCD), Chinese Core Journals Overview" and Coaj. It is also included in many foreign databases such as Scopus, CSA, EBSCO host, INSPEC, JST, etc.