关键词: 车际通信, 中继, 双瑞利衰落, 中断概率, 平均误符号率, 矩生成函数, 一致界

Abstract:

In order to improve the system performance for vehicletovehicle communications over doubleRayleigh fadings, the accesspoint relayed intervehicular communication (IVC) model is proposed. The statistical properties of the receiving signaltonoise ratio in IVC system are studied and a closedform expression on outage probability is obtained. And based on moment generating function method, the union upper bound on average bit error rate (ASER) is derived. Simulation results show that the theoretical analysis on outage probability coincides with Monte Carlo numerical calculations well. The ASER of the relaying IVC system is decreased and the diversity gains are achieved 3dB more at most through optimal power allocation method than equal power allocation scheme.

Key words: intervehicular communication, relay, doubleRayleigh fading, outage probability, average symbol error rate, moment generating function, union bound