摘要
在认知无线电网络(CRN)中,如何有效地实现认知用户间快速可靠的数据传输是目前的研究热点。针对现有传输方案的不足,提出了一种优化的数据传输方案。在考虑节点发射功率和负载均衡的约束条件下,基于对认知用户间链路可靠性预测,联合频谱分配与按需路由策略实现认知用户数据的最优化传输。仿真实验表明,在减少路由重构次数的同时,较大地提高了系统的吞吐量。
Effective,fast and reliable data transmission is a hot problem in cognitive radio network.To overcome some disadvantages of existing schemes,this paper proposes an optimal data transmission scheme.This scheme considers the constraints of transmitter power and load balancing of nodes,and achieves optimal transmission based on spectrum allocation,on-demand routing policy,and link reliability prediction.Simulation results show that this method,compared with the existing algorithms,reduces the number of routing reconstruction and greatly improves system throughput.
出处
《无线电通信技术》
2012年第5期43-46,共4页
Radio Communications Technology
关键词
认知无线电网络
数据传输
链路可靠性
吞吐量
Cognitive Wireless Network
data transmission
link reliability
throughput
