自主无线网络中信道质量的评估

摘要 无线信道的精确评估是节点接入网络决策的基础. 采用基于信道监听过程的方法进行信道质量评估,使得用户可以正确地接入无线信道. 该方法权衡了监听精度和信道空闲时间. 进一步分析了监听参数(监听时间和采样频率等)对信道评估结果的影响,得到了使信道质量值最大时的监听参数. 仿真验证了分析结果的正确性.
The node access has been paid more attentions in network decision making. An accurate evaluation of wireless channel was investigated. A method based on the process of sensing that is a trade-off between the accuracy of channel sensing and channel idle time, was employed to evaluate the wireless channel. Furthermore, the impact of the sensing parameters including sensing time, sampling frequency on the channel quality was analyzed. An optimal sensing time and sampling frequency was derived to maximize the value of channel quality. Simulations verify the analysis validity.