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Optimizing Wireless Channel Using Adaptive Modulation To Improve QoS In VANET

机译:使用自适应调制优化无线信道以改善VANET中的QoS

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Vehicular Ad Hoc Network (VANET) is a multi-hop wireless network which involves vehicles acting as nodes to communicate with each other without infrastructural support. With the increase in Quality of Service (QoS) needs in evolving applications and the widespread use of wireless and mobile devices, it is desirable to support QoS in VANETs. The resource limitations and variability further add to the need for QoS support in such networks. However, the characteristics of these networks make QoS support a complex process due to rapid topology changes caused by high mobility of communicating nodes. Modulation scheme implemented in wireless network affect the data rate hence the throughput of the communicating nodes, this in turn affect QoS. The paper focuses on adaptive modulation to improve the data throughput and efficiency of channel spectrum in VANET. Through theoretical and simulation results, it was shown that adaptive modulation performs well and improves throughput than other modulations schemes when used singularly in dynamic changing network topology like VANET.
机译:车载自组织网络(VANET)是一种多跳无线网络,其中涉及充当节点的车辆,无需基础设施的支持即可相互通信。随着在不断发展的应用中服务质量(QoS)需求的增加以及无线和移动设备的广泛使用,期望在VANET中支持QoS。资源限制和可变性进一步增加了此类网络中对QoS支持的需求。但是,由于通信节点的高移动性导致拓扑快速变化,这些网络的特性使QoS支持复杂的过程。在无线网络中实现的调制方案会影响数据速率,因此会影响通信节点的吞吐量,进而会影响QoS。本文重点研究自适应调制,以提高VANET中的数据吞吐量和信道频谱效率。通过理论和仿真结果表明,当在动态变化的网络拓扑(如VANET)中单独使用时,自适应调制比其他调制方案具有更好的性能并提高了吞吐量。

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