Beamforming Aided-SSK Modulation for MIMO System with Energy Harvesting
Abstract— In contrast to conventional preprocessing aided spatial modulation (PSM), which carries partial information using the indices of receive antennas, we exploit one receive antenna to implicitly convey information and meanwhile harvest energy at the remaining antennas. Based on this, we propose two novel beamforming schemes. The first scheme is to maximize the sum energy harvested by the receiver. And the second scheme is to maximize the minimum receiving power on each antenna except for the antenna whose index conveys information. A closed form solution and an iterative algorithm are given, respectively. Simulation results demonstrate that proposed two schemes can harvest a certain amount of energy with nearly same achievable rate. But the second scheme is superior to the first scheme and PSM scheme in terms of bit error rate (BER) performance.
Index Terms— Space shift keying (SSK), simultaneous wireless information and power transfer (SWIPT), transmitter zero forcing (TZF).
Zhenxing Yang, Tianyu Lu, Xiaojuan Yin
Nanjing University of Posts and Telecommunications, CHINA
Cite: Zhenxing Yang, Tianyu Lu, Xiaojuan Yin, "Beamforming Aided-SSK Modulation for MIMO System with Energy Harvesting," Proceedings of 2018 the 8th International Workshop on Computer Science and Engineering, pp. 24-31, Bangkok, 28-30 June, 2018.