On the Joint Use of Time Reversal and POPS-OFDM for 5G Systems

Abstract

Abstract-This paper investigates the efficiency of the combination of the Ping-pong Optimized Pulse Shaping-Orthogonal Frequency Division Multiplexing (POPS-OFDM) algorithm with the Time Reversal (TR) technique. This algorithm optimizes the transmit and receive OFDM waveforms with a significant reduction in the system Inter-Carrier Interference (ICI)/InterSymbol Interference (ISI) and guarantees maximal Signal to Interference plus Noise Ratio (SINR) for realistic mobile radio channels in 5G Systems. To this end, we characterize the scattering function of the TR channel and we derive the closedform expression of the SINR as a Generalized Rayleigh Quotient. Numerical analysis reveals a significant gain in SINR and OutOf-Band (OOB) emissions, brought by the proposed TR-POPS-OFDM approach.