A technique for antenna configuration selection for reconfigurable circular patch arrays
A technique for antenna configuration selection for reconfigurable circular patch arrays
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DOI：
10.1109/twc.2008.080212
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发表时间：
2009-03
影响因子：
10.4
通讯作者：
D. Piazza;J. Kountouriotis;M. d'Amico;K. Dandekar
中科院分区：
文献类型：
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作者：
D. Piazza;J. Kountouriotis;M. d'Amico;K. Dandekar
提出了一种多输入多输出（MIMO）通信系统接收端天线配置的可重构方法。该天线配置选择方案包括使用空间相关性和平均信噪比（SNR）信息来选择接收机处的天线辐射方向图。我们表明，使用这种方法，它是可能的，以实现在一个多元素的可重构天线系统的容量增益，而无需修改传统的MIMO系统的数据帧。我们证明了我们的配置选择算法，通过分析可重构圆形贴片天线在现实的MIMO集群信道模型。使用这种方法，我们还表明，所提出的选择方案的功能连接到天线参数，如辐射效率，输入阻抗，不同的天线配置的辐射模式之间的分集水平，和平均系统SNR。可实现的容量增益与这种配置选择方法计算通过数值模拟使用可重构圆形贴片天线在MIMO系统的接收机，采用最小均方误差接收器的信道估计。所提出的方法的性能进行比较的MIMO系统，估计每个天线配置的信道传输矩阵，以选择最佳的接收机天线辐射模式。信道容量和误码率（BER）的结果表明，所提出的选择方案相对于传统的天线选择技术的可重构MIMO系统的改进，特别是我们表明，改善增加的配置在多元素可重构天线的数量。
This paper demonstrates a method that allows reconfigurable multi element antennas to select the antenna configuration at the receiver of a Multiple Input Multiple Output (MIMO) communication system. This antenna configuration selection scheme consists of using spatial correlation and average Signal to Noise Ratio (SNR) information to select the antenna radiation pattern at the receiver. We show that using this approach it is possible to achieve capacity gains in a multi element reconfigurable antenna system without modifying the data frame of a conventional MIMO system. We demonstrate our configuration selection algorithm through an analysis of reconfigurable circular patch antennas in realistic MIMO clustered channel models. Using this approach we also show that the functionality of the proposed selection scheme is connected to antenna parameters such as radiation efficiency, input impedance, the level of diversity between the radiation patterns of different antenna configurations, and the average system SNR. The capacity gain achievable with this configuration selection approach is calculated through numerical simulations using reconfigurable circular patch antennas at the receiver of a MIMO system that employs minimum mean square error receivers for channel estimation. The performance of the proposed method is compared to that of a MIMO system that estimates the channel transfer matrix for each antenna configuration in order to select the optimal receiver antenna radiation pattern. Channel capacity and Bit Error Rate (BER) results show the improvement offered by the proposed selection scheme relative to a conventional antenna selection technique for reconfigurable MIMO systems; in particular we show that the improvement increases with the number of configurations in the multi element reconfigurable antenna.