Abstract:

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 established by using the fuzzy analytic hierarchy process method, and the weights and membership of these algorithms are determined, and the fuzzy comprehensive evaluation method of different combination systems by MIMO/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.