计算机工程2012，Vol.38Issue(11)：77-79,84,4.DOI:10.3969/j.issn.1000-3428.2012.11.024
一种适用于车路网的速率自适应算法
Rate Adaptation Algorithm for Vehicle to Roadside Network
摘要
Abstract
The traditional rate adaptive algorithm can not select the appropriate transmission rate under the vehicular network of which channel quality changes quickly. This paper proposes a rate adaptive algorithm for vehicle to roadside network. The algorithm is based on Receive Signal Strength Indication(RSSI) of transmitting terminal to predict and select rate, Roadside Unit(RSU) of transmitting terminal measures RSSI value of received ACK messages to predict next time transmission channel quality. Simulation results show that the algorithm for channel quality prediction can achieve higher accuracy and higher system throughput under different degree of channel fading, compared with RBAR algorithm and SampleRate algorithm.关键词
车载网/车路通信/速率自适应/指数平滑/保守预测/信道衰落Key words
vehicular network/ vehicle to roadside communication/ rate adaptation/ exponential smoothing/ conservative forecast/ channel fading分类
信息技术与安全科学引用本文复制引用
喻卫,匡罗贝,徐明..一种适用于车路网的速率自适应算法[J].计算机工程,2012,38(11):77-79,84,4.基金项目
湖南省自然科学基金资助项目(09JJ4034) （09JJ4034）
