多跳车间通信系统在n* 瑞利衰落信道下的性能研究
On the Performance of Multihop-Intervehicular Communications Systems over n*Rayleigh Fading Channels
摘要:
研究了具有再生中继和非再生中继的多跳车间通信系统的性能。我们认为所谓的“n* 瑞利分布”作为一个足够的多径衰落信道模型的车辆到车辆的通信场景。我们推导出一种新的近似中断概率的最大比合并(MRC)分集接收。此外,我们分析了衰落的数量和优化的功率分配的调查情况。数值结果表明,再生系统是更有效的比非再生系统时,级联阶数(n)是小的,然而,对于大的n,我们的研究结果表明,这两种中继技术的性能是相当相似的。
英文摘要:
We investigate the performance of multihop-intervehicular communication systems with regenerative and nonregenerative relaying. We consider the so-called "n*Rayleigh distribution" as an adequate multipath fading channel model for vehicle-to-vehicle communication scenarios. We derive a novel approximation for the outage probability of maximum ratio combining (MRC) diversity reception. In addition, we analyze the amount of fading and optimize the power allocation for the investigated scenario. Numerical results show that regenerative systems are more efficient than nonregenerative systems when the cascading order (n) is small; however, for large n, our results demonstrate that the performance of both relaying techniques is rather similar.
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