Capacity Bounds for Backscatter Aided Wireless Transmission on High Speed Rails

In this paper we introduce backscatter technology into wireless communication systems on high speed rails (HSRs). Specifically, we propose a backscatter aided wireless transmission (BAWT) scheme and demonstrate its outperformance over the existing direct wireless transmission (DWT) scheme. We derive the upper and lower bounds of channel capacity for BAWT and prove that the channel capacity for BAWT is larger than that of DWT on certain conditions. Finally, simulation results are provided to corroborate the proposed studies.