基于模糊层次分析的MIMO/SA多天线系统算法性能评估方法

Method to evaluate algorithm performance of MIMO/SA multi-antenna system based on fuzzy analytic hierarchy process

多输入多输出(multiple input and multiple output,MIMO)和智能天线(smart antenna,SA)是第四代移动通信系统的关键技术,其结合的MIMO/SA多天线系统所采用算法的不同,直接影响系统性能,准确评估MIMO/SA多天线系统的算法性能,对于实际应用十分重要。结合波达方向估计算法、空时编译码算法、波束成形算法的算法性能指标,应用模糊层次分析法建立了层次结构模型,确定了各算法性能指标的权重和隶属度,得到了MIMO/SA多天线不同实现方案中不同算法的模糊综合评估方法,进行了仿真验证。仿真结果表明,评价方法能在不同的MIMO/SA多天线实现方案中选择出优化方案,对MIMO/SA多天线系统的方案设计与算法实现有较好的参考价值。

Multiple input and multiple output （MIMO） and smart antenna （SA） are the key technologies in the fourth generation mobile communications. There are different algorithms in the multi-antenna system which is combined by MIMO and SA, and they effect on the MIMO/SA multi-antenna system performance. How to evaluate the system performance accurately becomes more and more important for practical application of a MIMO/SA multi-antenna system. According to the performance parameters of direction of arrival algorithms, space and time coding and decoding algorithms, beamforming algorithms, the hierarchical structure model is es- tablished by using the fuzzy analytic hierarchy process method, and the weights and membership of these algo- rithms are determined, and the fuzzy comprehensive evaluation method of different combination systems by MI- MO/SA multi-antenna is obtained, and this method is checked by simulation. The results of simulation show that the fuzzy comprehensive evaluation method can select a option combination from some different the MIMO/ SA multi-antenna combinations, and is helpful for designing the MIMO/SA multi-antenna system and realizing the algorithms.