Combined downlink beamforming and channel estimation for high data rates CDMA systems

信号处理 Pub Date : 2001-08-06 DOI:10.1109/SSP.2001.955237

S. Perreau

引用次数: 0

Abstract

We presented a method for efficiently combining channel estimation and downlink beamforming for CDMA systems, in cases where the RAKE receiver cannot be used for channel estimation. This method relies on an iterative scheme which iterates between a channel estimation scheme which is only stable when the multi-user interference is low and a beamforming operation which maximises the received signal to noise ratio. The simulation results presented show that this iterative scheme seems to converge to solutions which maximise the signal to noise plus interference ratio (SINR) which is an attractive feature since it is achieved without taking into account other user's statistics. In this new method the channel estimation and beamforming operations are iterated several times until convergence to a fixed solution.

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高数据速率CDMA系统的联合下行波束形成和信道估计

我们提出了一种有效结合CDMA系统的信道估计和下行波束形成的方法，在RAKE接收器不能用于信道估计的情况下。该方法依赖于一种迭代方案，该方案在信道估计方案(仅在多用户干扰较低时稳定)和波束形成操作(最大限度地提高接收信噪比)之间迭代。仿真结果表明，该迭代方案似乎收敛于最大信噪比和干扰比(SINR)的解决方案，这是一个有吸引力的特征，因为它是在不考虑其他用户的统计数据的情况下实现的。在这种新方法中，信道估计和波束形成操作经过多次迭代，直到收敛到一个固定的解。

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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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.