Improved performance of low complexity K-best sphere decoder algorithm

摘要

To achieve high data rates, reliable data rate transmission and near capacity performance for future wireless communication systems iterative processing has been widely considered. However, such an efficient receiver design has been made significant challenge. In this paper, multiple-input multiple output (MIMO) detection with channel decoding techniques has been investigated for achieve reliable data transmission, the performance and computation complexity of the receiver for MIMO system has been considered. First we studied and review the most MIMO detection algorithms based on the sphere decoding (SD), K-best decoding and interference cancellation. In consequence a low complexity K-best (LC-K-Best) based sphere decoder is proposed in order to substantially reduce the computation complexity without significant performance degradation.