Article ID Journal Published Year Pages File Type
491455 Procedia Technology 2012 8 Pages PDF
Abstract

Spatial modulation (SM) has emerged as a very promising method to exploit the potential multiple-input multiple-output system gains using low-complexity transceivers. SM uses the antenna index at the transmitter as an additional source of information. Although SM avoids inter-channel interference, its performance tends to decrease when the number of constellation points per antenna grows up. The main contribution of this paper is to introduce a novel pre-equalization stage for SM which allows to mitigate the fading effect of the wireless channel. Its principle is to pre-distort the points generated by SM, so that the receiver has an approximation of a M-QAM scheme, where the minimum distance between constellation's points is increased and consequently, the system's performance is improved. In order to perform the pre-equalization, a complete channel state information is assuming at the transmitter. It is shown through Monte Carlo simulations that the proposed scheme significantly enhances the performance of SM.

Related Topics
Physical Sciences and Engineering Computer Science Computer Science (General)