异构认知网中基于能效的协作技术研究

发布时间：2018-03-24 19:47

本文选题：认知无线电　切入点：能量效率　出处：《电子科技大学学报》2017年05期

【摘要】：针对异构认知网络场景,提出了一种主次系统"双赢"的高能效协作通信机制。在满足主次系统"双重"速率Qo S要求下,该机制允许次级用户在接入主系统协助主用户传输数据的同时,换取一部分授权频谱资源来实现自身数据在异构网中的传输分流,以此提升次级能效。本文研究了该机制的次级加权能效最大化非凸资源优化问题,结合参数化的分式规划算法和黄金分割法提出了一种资源分配的迭代算法。仿真结果表明,所提机制在不降低主用户通信性能的情况下,提升了次级系统传输能效,实现了主次系统传输"双赢"的目的。
[Abstract]:For heterogeneous cognitive network scenarios, this paper proposes a "win-win" cooperative communication mechanism for primary and secondary systems, which meets the requirements of "dual" rate QoS of primary and secondary systems. This mechanism allows secondary users to access the master system to assist the primary users to transmit data in exchange for a portion of authorized spectrum resources to realize the transmission of their own data in heterogeneous networks. In order to improve secondary energy efficiency, this paper studies the optimization of non-convex resources with sub-weighted energy efficiency maximization, and proposes an iterative algorithm for resource allocation combined with parameterized fractional programming algorithm and golden section method. The simulation results show that, Without reducing the communication performance of the primary user, the proposed mechanism improves the transmission efficiency of the secondary system and realizes the goal of "win-win" transmission of the primary and secondary systems.
【作者单位】：电子科技大学通信与信息工程学院;四川广播电视大学工程技术学院;
【基金】：国家自然科学基金(61471089,61071099) 四川省教育厅科研项目(16ZB0504)
【分类号】：TN925

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