衰落信道下异步DS-CDMA系统的时空传播参数估计

IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004. Pub Date : 2004-10-26 DOI:10.1109/ISCIT.2004.1412472

R. Wu, T. Ristaniemi

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引用次数: 1

摘要

本文研究了存在瑞利衰落效应的异步直接序列扩频通信系统的码时和到达方向估计(DOA)，即二维码获取问题。本文采用了天线阵列。采用独立分量分析频率选择(ICA-FS)方法在参数估计前进行干扰抑制。抑制干扰的操作减少了不希望的高斯效应。ICA-FS要求已知所需用户对应的训练序列，不同用户对应的数据信号在统计上是独立的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Spatial-temporal propagation parameter estimation in the asynchronous DS-CDMA systems over fading channel

This paper is concerned with code timing and direction-of-arrival (DOA) estimation, called two-dimensional code acquisition, in asynchronous direct sequence spread spectrum communication systems with the presence of Rayleigh fading effects. An antenna array is used in this paper. A method named independent component analysis frequency selection (ICA-FS) is used to perform interference suppression before parameter estimation. The operation for suppressing interference brings a decrease in undesired Gaussian effects. The ICA-FS requires a training sequence corresponding to the desired user to be known, and data signals corresponding to different users to be statistically independent.

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IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004.

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