基于D2D对分组的TDD系统资源分配算法

发布时间：2018-07-01 14:35

本文选题：时分双工系统 + DD对　；参考：《计算机研究与发展》2017年05期

【摘要】：针对TDD系统中多个D2D用户复用一个蜂窝用户下行信道资源,在最大化系统吞吐量的目标下,提出一种D2D对分组资源分配算法,该算法由3部分组成:1)根据信道数确定D2D对分组数,按D2D对间距确定分组中心,并将余下D2D对按其对组内D2D用户通信中断概率影响程度划分到对应分组;2)通过比较D2D对分组与蜂窝用户干扰影响强度,利用匹配算法为D2D对分组寻找相应蜂窝用户资源并复用;3)进一步根据蜂窝用户和D2D用户QOS要求,去掉组内干扰较大D2D对,从而得到最终复用蜂窝用户资源的D2D对.仿真分析表明:所提出算法既能允许系统接入较多D2D对,还能提高系统吞吐量.
[Abstract]:For multiple D2D users in TDD system multiplexing the downlink channel resources of one cellular user, a D2D packet resource allocation algorithm is proposed under the goal of maximizing system throughput. The algorithm consists of three parts: 1) the number of D2D pairs is determined according to the number of channels, and the packet center is determined according to the distance between D2D pairs. The remaining D2D pairs are divided into corresponding packets according to the degree of their influence on the D2D communication interruption probability in the group. The influence intensity of the D2D interference on the packet and the cellular user is compared by comparing the D2D pair with the corresponding packet. The matching algorithm is used to search the corresponding cellular user resources for the D2D pair and multiplexing 3) according to the QOS requirements of the cellular user and the D2D user, the D2D pair with large interference within the group is removed, and the D2D pair of the final multiplexed cellular user resources is obtained. Simulation results show that the proposed algorithm can not only allow the system to access more D2D pairs, but also improve the system throughput.
【作者单位】：重庆邮电大学通信与信息工程学院;移动通信技术重庆市重点实验室(重庆邮电大学);
【基金】：国家自然科学基金项目(61440062) 国家“八六三”高技术研究发展计划基金项目(2014AA705) 长江学者和创新团队发展计划基金项目(IRT16R72)~~
【分类号】：TN929.5

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