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中文摘要：
认知无线电网络中的节点可以自主切换通信频率，从而对拓扑和路由产生影响。该文针对多跳认知无线电网络的场景提出了一种路由与频谱分配的联合策略，在按需路由的过程中完成频谱分配任务。实验结果表明，在多数据流并存的认知无线电网络中，该策略较其它路由方法具有更好的适应性和更低的累积时延。
英文摘要：
Nodes in Cognitive radio networks can change their communication frequency actively, which affects networks topology and routing. In this paper, a joint routing and spectrum assignment scheme for cognitive radio networks is proposed that assigns spectrum bands during on-demand routing. Simulation results show that, in the scenario of cognitive radio networks that have multiple data flows, this scheme provides better adaptability and incurs much lower cumulative delay when comparing to other routing approaches.
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