DOA based adaptive beamforming with RAKE for TDSCDMA cellular networks

2012 International Conference on Communications, Devices and Intelligent Systems (CODIS) Pub Date : 2012-12-01 DOI:10.1109/CODIS.2012.6422122

A. Kundu, S. Roy, A. Roy, S. K. Parui

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引用次数: 2

Abstract

Smart Antenna Array acquires the spatial signatures of the signals to estimate the direction of arrival (DOA) and subsequently steer multiple beam towards the desired signals and eliminate co-channel interference and increase the system capacity and improve the communication quality. Smart array with Rake receiver may counter signal multipath effect and improve information reliability. The purpose of this paper is to study the performance of the smart antenna DOA based beamforming algorithm applied to Time Division Synchronous Code Division Multiple Access (TDS -CDMA) system. The simulation results shows that a TDS-CDMA system with smart antenna and rake receiver, compared with an omnidirectional antenna, can have lower bit error rate at a specific signal to noise ratio (SNR), allow more users to access the system at the specific bit error rate thus increase the system capacity. However, performance of smart antenna system greatly depends on efficiency of digital signal processing algorithm applied at the adaptive processor.

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TDSCDMA蜂窝网络中基于DOA的RAKE自适应波束形成

智能天线阵列通过获取信号的空间特征来估计信号的到达方向(DOA)，从而将多波束引导到期望的信号上，消除同信道干扰，增加系统容量，提高通信质量。采用Rake接收机的智能阵列可以对抗信号多径效应，提高信息可靠性。本文的目的是研究基于DOA的智能天线波束形成算法在时分同步码分多址(TDS -CDMA)系统中的性能。仿真结果表明，与全向天线相比，采用智能天线和rake接收机的TDS-CDMA系统在特定信噪比下具有更低的误码率，在特定误码率下允许更多的用户接入系统，从而提高系统容量。然而，智能天线系统的性能在很大程度上取决于自适应处理器所采用的数字信号处理算法的效率。

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

2012 International Conference on Communications, Devices and Intelligent Systems (CODIS)

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