Phase rotation codebook precoding for space shift keying MIMO systems

Abstract

Transmit Precoding (TPC) techniques based on maximizing the Minimum Euclidean Distance (MED) of the received constellation have been proposed to improve the performance of Space Shift Keying (SSK) MIMO systems. These methods have limitations, including the necessity of full Channel State Information (CSI) at the transmitter, high complexity since they generate arbitrary precoders, and the requirement of infinite rate feedback channel. On the other hand, Codebook based precoding approach have the competency to tackle these difficulties. Hence, this paper proposes Full-Combination (FC) codebook with a systematic structure constructed based on Phase Rotation Precoding (PRP) where the CSI is known to the receiver only. Also, two effective codebooks called Factorized Full-Combinations (FFC) and Statistically Filtered Full-Combinations (SFF) are designed to solve the exhaustive search problem in FC codebook needed to find the best codeword that maximizes MED. Results illustrate the considerable performance gain achieved through applying the FC codebook. In addition, we show the capability of FFC and SFF codebooks to reduce the complexity and provide almost the same BER as FC codebook.