In conventional generalised spatial modulation (GSM) systems, the antenna combination selection is based on the distribution of channels, without channel state information (CSI). In this paper, an A-Star based heuristic method and a sequential forward selection method for antenna combination selection in GSM systems are proposed to provide a superior symbol error rate (SER) performance with CSI. The A-Star based heuristic method is designed to minimize the union bound of SER rather than to maximize the minimum Euclidean distance between symbols. And the sequential forward antenna combination selection method is designed to reduce the computational complexity compared to the A-Star based heuristic method, but with slight loss in SER performance. Monte Carlo simulations are implemented to verify the performance of these proposed methods.
['Yue Sun', 'Jintao Wang', 'Longzhuang He', 'Changyong Pan', 'Jian Song']
Heuristic antenna combination selection in generalised spatial modulation