摘要
文章研究了感知无线电网络中联合频谱分配和调度的问题,给出了基于物理干扰模型的频谱分配算法。调度算法是对由频谱分配算法得到的一系列传输模式进行调度,从而实现频谱共享。本文基于提出的频谱分配算法通过仿真比较了三种调度算法,结果表明考虑了公平性的调度算法的网络吞吐量有稍微的降低(可达到最大吞吐量的96%),但感知用户的整体需求满足度却得到了很大的提高,即达到了很好的公平性。
This paper,studies joint spectrum allocation and scheduling problems in cognitive radio wireless networks with the objectives of achieving fair spectrum sharing.It proposes an spectrum allocation algorithm for the physical model,Which are used to schedule the transmission modes obtained by the spectrum allocation algorithms.The proposed three algorithms are compared through simulation.The results show that,the algorithms considering fairness perform is about 96% of the maximum achievable throughput,a little less than the average throughput;but the traffic demands of all the users can be satisfied.Thus it can achieve a good tradeoff between throughput and fairness.
出处
《现代电信科技》
2011年第1期77-81,共5页
Modern Science & Technology of Telecommunications
关键词
频谱共享
频谱分配
频谱调度
公平性
spectrum sharing
spectrum allocation
spectrum scheduling
fairness
