感知无线电ad hoc网络基于干扰的路由

感知无线电技术作为一种新兴技术,通过时间和空间维度上的频谱空洞的利用能很好地提高频谱利用率。感知无线电的路由不同于传统的路由度量,因为次用户从时间和空间上都不能对主用户造成干扰。在感知无线电ad hoc网络环境下,选取了干扰作为路由的度量,并将干扰分为系统内干扰(次用户自身之间的干扰)和系统间干扰(次用户对主用户的干扰)。在已有的ad hoc网络干扰路由协议的基础上对干扰权重做出改进,并提出新的基于系统间路由干扰(对主用户干扰最小化)和基于联合系统内和系统间干扰的路由协议。仿真结果表明,该干扰模型符合感知无线电移动ad hoc网络的特性。

Interference-based routing in cognitive ad hoc networks

Cognitive radio can improve the spectrum utilization by making use of spectrum holes in time and space dimension.The routing protocol in cognitive radio is different from traditional routing protocols as the secondary users can not interfere with the primary users both in time and space.In cognitive ad hoc networks,interference is chosen as routing metric,and it is divided into intra-system interference and inter system interference.Based on existing ad hoc interference routing protocol,its interference weights are improved,and new routing protocols are proposed in order to minimize inter system interference and the joint interference of intra-system and inter system.The simulation result shows that the proposed routing protocols are proved to well capture the route performance in the context of cognitive ad hoc networks.