Performance Study of W-CDMA Adaptive Array Antennas

2006 IEEE Antennas and Propagation Society International Symposium Pub Date : 2006-10-23 DOI:10.1109/APS.2006.1711655

Q. Yuan, T. Suguro, Q. Chen, K. Sawaya, E. Kudoh, F. Adachi

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引用次数: 1

Abstract

The effect of the antenna geometry and the adaptive algorithm on the performance of a W-CDMA adaptive array antenna for mobile terminals is investigated experimentally. A W-CDMA receiving system for a 4-element array antenna is developed. The adaptive algorithm and the array antenna configuration are changed according to the requirement of the investigation. The performance of the system including synthesized pattern, adaptive weight and bit-error-rate (BER) characteristics are measured for the performance analysis. Results show that signal-to-interference ratio (SIR) can be greatly improved by 6 to 10 dB compared with the single antenna when BER is equal to 10-3. BER of the single monopole with a reflector is lower than that of the single monopole because the monopole with reflector has a higher gain in the direction of the desired wave. However, the SIR improvement of the monopole array is larger than that of the monopole array with a reflector because the array element gain of the monopole to the direction of the interference is larger. It seems that array elements which have homogeneous radiation pattern and high radiation efficiency are suitable to the adaptive array antennas

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W-CDMA自适应阵列天线性能研究

实验研究了天线几何形状和自适应算法对移动终端W-CDMA自适应阵列天线性能的影响。研制了一种用于四元阵列天线的W-CDMA接收系统。根据调查的需要，改变了自适应算法和阵列天线的配置。测试了系统的综合方向图、自适应权值和误码率等性能，对系统进行了性能分析。结果表明，当误码率为10-3时，与单天线相比，信干扰比(SIR)可大幅提高6 ~ 10 dB。带反射镜的单极子的误码率比带反射镜的单极子的误码率低，这是因为带反射镜的单极子在所需波的方向上具有更高的增益。然而，单极子阵列的SIR改善比带反射器的单极子阵列更大，因为单极子阵列对干扰方向的阵列元件增益更大。认为具有均匀辐射方向图和高辐射效率的阵列元件适合于自适应阵列天线

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2006 IEEE Antennas and Propagation Society International Symposium

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