Hardware Design and Analysis for Generalized Receive Space Modulation Techniques

Abstract

Receive space modulation techniques (RSMTs) have recently been introduced as efficient implementations of multiple input multiple output (MIMO) receivers. RSMTs achieve these implementations assuming knowledge of the channel state information (CSI) at the transmitter through a feedback link. RSMTs, however, encounter the limitation that the number of receive antennas has to always be a power of two. In this letter, two new generalized additions to RSMTs are introduced where an arbitrary number of antennas can be deployed. The two techniques are named generalized receive space shift keying (GRSSK) and generalized receive spatial modulation (GRSM). The hardware models for both techniques are defined and compared with each other and to existing models of non-generalized techniques. The bit error rate performance, power consumption, and required hardware cost for practical deployments of both systems are presented and thoroughly discussed.