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首页> 外文期刊>International journal of ad hoc and ubiquitous computing >Optimal channel allocation for multi-PU and multi-SU pairs in underlay cognitive radio networks
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Optimal channel allocation for multi-PU and multi-SU pairs in underlay cognitive radio networks

机译:底层认知无线电网络中多PU和多SU对的最佳信道分配

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摘要

In the underlay cognitive radio networks, this paper defines the joint channel and power allocation problem, which aims to optimise the max-total and max-min throughputs of secondary users (SUs), with the constraints of interference on primary receivers. For the max-total problem, we formulate the problem as a bipartite matching and derive a maximum weighted matching-based sum throughput maximisation algorithm (STMA) to solve this problem. For the max-min problem, on the basis of the optimal relay assignment (ORA) algorithm, we derive a polynomial time optimal channel assignment algorithm (OCAA) to iteratively assign channels to each SU pair under the power constraint. Simulation results demonstrate the effectiveness of our algorithms when compared with random method.
机译:在底层认知无线电网络中,本文定义了联合信道和功率分配问题,旨在优化次要用户(SU)的最大总吞吐量和最大最小吞吐量,并限制了主要接收方的干扰。对于最大总问题,我们将该问题表述为二分匹配,并导出基于最大加权匹配的和吞吐量最大化算法(STMA)来解决此问题。对于最大-最小问题,基于最优中继分配(ORA)算法,我们导出了多项式时间最优信道分配算法(OCAA),以在功率约束下向每个SU对迭代分配信道。仿真结果表明,与随机方法相比,我们的算法是有效的。

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