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中文摘要：
提出一种基于主用户干扰约束的机会频谱接入感知-传输时隙调度优化方案。首先，推导切换机制下认知系统的吞吐量和主用户干扰率，建立感知时间和感知周期联合优化模型；然后，在主用户干扰率和次用户感知质量双重约束下，推导了可最大化认知系统吞吐量的最优感知时间和感知周期的闭合表达式；最后，阐述了时隙优化调度方案并计算了认知系统可获得的最大吞吐量。仿真结果表明，所提出的时隙调度方案可以为认知系统提供更高的吞吐量，并更好地适应主用户干扰率和感知质量约束的变化。
英文摘要：
A sensing-then-transmission slot scheduling scheme for opportunistic spectrum access under the interference constraint of primary users （PU） was proposed. First, the throughput of the cognitive radio system （CRS） with channel handoff mechanism and the interference ratio to PU were deduced. An optimization model combined the sensing time and sensing period was also set up. Then, the optimal sensing time and sensing period were derived by maximizing the throughput of the CRS subject to both interference ratio and sensing quality constraints. Based on the analysis, a time slot scheduling scheme was finally proposed. The achievable maximum throughput of the CRS was derived too. Simulation results indicate that the proposed slot scheduling scheme can enhance the throughput of the CRS, and fit the changes of interference ratio and sensing quality constraints better.
同期刊论文项目
同项目期刊论文
On the Study of Half-Duplex Asymmetric Two-Way Relay Transmission Using an Amplify-and-Forward Relay
Opportunistic Relay Selection for Joint Decode-and-Forward Based Two-Way Relaying with Network Codin
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