Applying antenna synthesis methods on a path based MIMO channel model for verification

Abstract

In this paper multiple input multiple output (MIMO) channel samples are generated by the use of a simple channel model that allows for arbitrary selection of the propagation paths. The distributions of direction of departure (DOD), direction of arrival (DOA) and phases and amplitudes can be selected for each path. The antenna array geometry and the antenna element radiation patterns are also included and can be chosen arbitrarily. An antenna synthesis method that is based on eigenbeamforming is then applied to the simulated channels. It is the optimal solution of the considered antenna synthesis problem that maximizes ergodic channel capacity. The resulting fixed synthesized antenna radiation patterns are evaluated in terms of their matching effect to the predominant directions of the transmission channel afterwards. The results show that the channel model is beneficial for the development of antenna synthesis methods. It includes all parameters necessary for the design and evaluation of antenna synthesis methods and still has a low complexity.