Angular beamforming technique for MIMO beamforming system
Angular beamforming technique for MIMO beamforming system
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DOI：
10.1109/ecticon.2012.6254172
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发表时间：
2012-05
期刊：
影响因子：
--
通讯作者：
A. Innok;P. Uthansakul;M. Uthansakul
中科院分区：
文献类型：
--
作者：
A. Innok;P. Uthansakul;M. Uthansakul
对于MIMO波束成形，本征波束成形（EB）技术以知道全部信道信息为代价提供最佳性能。为了减少这种开销，量化波束形成（QB）已经被提出，通过仅使用一些反馈比特来计算合适的波束形成向量。然而，QB在寻找波束成形向量的复杂性方面具有缺点，并且对于大量反馈比特而言更困难。本文提出了一种新的波束形成技术--角波束形成（AB）技术，以克服QB的这一缺点。通过将多个数据流发送到4x 4 MIMO系统中进行调查。研究了不同数据流和反馈比特数对系统性能的影响。仿真结果表明，AB技术具有很好的性能，其性能与QB相当。
For MIMO beamforming, the Eigen Beamforming (EB) technique provides the best performance with the expense of knowing full channel information. To reduce such an expense, the Quantized Beamforming (QB) has been presented by using only some feedback bits to calculate the suitable beamforming vectors. However, QB has a drawback in the complexity of finding the beamforming vectors and it is more difficult for a lot of feedback bits. In this paper, the new technique named as Angular Beamforming (AB) has been presented to overcome such a drawback of QB. The investigations are undertaken by sending multiple data streams into 4x4 MIMO system. The effect of different data streams and number of feedback bits are studied. The simulation results indicate that AB technique performs very well and its performance is as good as QB.