Cooperative Transmission Algorithm of RIS-Assisted Intelligent Transportation System Under Aggregated Interference

Addressing the problem of complex communication in intelligent transportation system (ITS) under aggregated interference, it is clear that reconfigurable intelligent surface (RIS)-assisted communication is an advantageous solution to the problem of high energy consumption, due to its low-cost and sustainable features. We first propose a transmission protocol architecture of dedicated short range communication (DSRC) compatible mode under cellular-vehicle to everything (C-V2X), and a transmission selection scheme, which selects whether to perform RIS-assisted communication or not based on the requirement of real-time outage probability. Next, single-RIS-assisted and multi-RIS-assisted ITS models are proposed separately, and precise expressions for outage probability, bit error rate, and channel capacity are successfully derived. Finally, we provide sufficient Monte Carlo simulations and analysis of the proposed systems, and the simulation results verified the effectiveness of the proposed algorithm and the correctness of the theoretical analysis.