Simultaneous Reception of Information in the Bidirectional Time Reversal Mirroring System

A resonant beam communication (RBCom) system produces a converging carrier wave between two communicating nodes to maximize power received between them. This is implemented using retroreflective arrays. However, this system only produces a resonant beam on a single frequency point. In the bidirectional time reversal mirroring (BiTRM) system, two communicating nodes use a time reversal mirror device instead, and this produces a similar convergence to the RBCom system but in a wider bandwidth. Analysis of this system in a scattering-rich environment shows that the resulting pulse shape after an infinite number of cycles is the pulse shape that maximizes the energy delivered from one node to the other. As RBCom systems has demonstrated the successful reception of simultaneous signals in the same frequency, the suitability of the BiTRM system to do the same process over a wider bandwidth needs to be investigated. In this paper, we present a simulation experiment to study the performance of BiTRM in receiving two simultaneous signals. Results showed that the lower number of TR cycles at high signal-to-noise ratio values is performs better in terms of bit error rates.