Distributed Generalized Spatial Modulation Based on Chinese Remainder Theorem

In this letter, we divide distributed antennas into several transmit antenna groups (TAGs), and extend the generalized spatial modulation (GSM) idea to a new distributed multiple-input multiple-output system, which is so called as a distributed GSM (DGSM) system. The spare antenna combinations in the component TAGs are exploited to increase the transmission rate of DGSM. To reduce the complexity of the optimal maximum-likelihood (ML) detector, a low-complexity Chinese remainder theorem-based ML (CRT-ML) detector is also derived. Simulation results show that the proposed CRT-ML detector performs similar to the optimal ML detector.