部分全双工蜂窝网线性部署下的性能分析

发布时间：2018-10-18 17:17

【摘要】：同频同时全双工(FD)通信由于其理论上可以提高一倍的频谱效率而获得了广泛关注。但是在全双工蜂窝网中,严重的小区间干扰极大地影响了系统性能。为了缓解严重的干扰,提高系统频谱效率,该文提出了一种部分全双工资源分配方案。该方案将时频资源划分为全双工资源块和半双工资源块,然后根据所服务用户的信道信息对时频资源进行分配,针对Wyner一维系统模型,将用户按其所处位置进行划分和资源分配,推导了不同划分门限下系统的频谱效率,得到了最优划分距离。仿真结果表明:相比完全全双工和完全半双工通信,部分全双工能够有效提高系统的频谱效率。
[Abstract]:Simultaneous full duplex (FD) communication at the same frequency has attracted much attention because it can double spectrum efficiency in theory. However, in full duplex cellular networks, severe inter-cell interference greatly affects the performance of the system. In order to alleviate the serious interference and improve the spectral efficiency of the system, a partial full duplex resource allocation scheme is proposed in this paper. In this scheme, the time-frequency resources are divided into full-duplex resource blocks and half-duplex resource blocks, then time-frequency resources are allocated according to the channel information of the users served, and the Wyner one-dimensional system model is used. The users are divided and allocated according to their location. The spectrum efficiency of the system is deduced under different partition thresholds and the optimal partition distance is obtained. The simulation results show that compared with full duplex and full half duplex communication, partial full duplex can effectively improve the spectral efficiency of the system.
【作者单位】：清华大学电子工程系微波与数字通信国家重点实验室;清华大学信息科学与技术国家实验室;
【基金】：国家“九七三”重点基础研究项目(2013CB329002) 国家自然科学基金青年基金(61201192) 清华—英特尔国际科技合作项目(20153000219) 科技部海峡两岸项目(2014DFT10320) 教育部科学技术研究重点资助项目(313005) 东南大学国家重点实验室开放研究基金项目(2012D02) 国家“八六三”高技术项目(2015AA01A701) 国家科技重大专项项目(2015ZX03001031-002) 清华大学自主科研项目(2015Z02-3)
【分类号】：TN929.5

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