On the Capacity and Performance of Generalized Spatial Modulation

Abstract—Generalized spatial modulation (GSM) uses N antenna elements but fewer radio frequency (RF) chains (R) at the transmitter. In GSM, apart from conveying information bits through R modulation symbols, information bits are also conveyed through the indices of the R active transmit antennas. In this letter, we derive lower and upper bounds on the the capacity of a (N, M, R)-GSM MIMO system, where M is the number of receive antennas. Further, we propose a computationally efficient GSM encoding method and a message passing based low-complexity detection algorithm suited for large-scale GSM-MIMO systems.

• Type: Journal
• Year: 2016
• Where: ICL
• Authors: T. Lakshmi Narasimhan, A. Chockalingam
• Keywords: ICL 2016