Secure spatial modulation based on two-dimensional generalized weighted fractional Fourier transform encryption

Abstract In this paper, a two-dimensional generalized weighted fractional Fourier transform (2DGWFRFT) and constellation scrambling (CS)-based secure spatial modulation (SM) scheme, called 2DGWFRFT-CS-SM, is proposed to enhance the physical layer security (PLS) of wireless communication system. The scheme executed by two steps. first step, 2DGWFRFT implemented as kernel for PLS provision. second parameters 2DGWFRFT, regarded encryption core, control antenna number rotation further SM symbol. Both signal generation strategy system including transfer process have been elaborated depict mechanism scheme. Moreover, we give key extraction algorithm utilized generate parameters, which can help scramble serial number. From perspective characteristics, uniqueness variation in has investigated outperform other cryptography-based algorithms. Finally, secrecy rates energy efficiency our are theoretically analyzed evaluated via Monte Carlo simulations, demonstrating that achieve much higher capacity than artificial noise schemes without requiring additional jamming power consumption myriad costs hardware.