Adaptive Secure Transmission Based on Collaborative Communication in Smart Grids

In this paper, a collaborative power line communication (PLC) and generalized spatial modulation architecture (CPGA) is proposed to resolve the adaptive secure transmission problem in smart grid. In the proposed CPGA, the adaptive transmission is driven by the level of data in smart grid, which is achieved through a proposed antenna selection scheme based on interval quantification. And the anti-eavesdropping ability is improved through PLC-assisted transmission and the artificially designed jammer. Additionally, a better management ability of energy efficiency is guaranteed based on the data-driven adaptive transmission scheme. The closed-form expressions of the security capacity, the management ability of energy efficiency and average bit error rate (ABER) are derived for the performance of adaptive secure transmission. Finally, we analyze the security capacity, management capability of energy efficiency and ABER of the CPGA. Numerical results show that better ABER performance can be achieved in the CPAG compared with the traditional GenSM. Moreover, for the traditional multi-input multi-output, the better security capacity and management of energy efficiency can be achieved in the CPGA. And the adaptive balance between secure level and energy management are realized through the CPGA in smart grid.