异构网络资源分配优化算法研究

发布时间：2018-01-03 04:21

本文关键词：异构网络资源分配优化算法研究　出处：《南京邮电大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着人们对无线通信服务质量的要求不断提高,无线数据流量呈现出爆发式的增长。通信系统中的频谱和能量都是稀缺资源,急需更加有效的管理和利用。借助频谱感知等新技术,宏蜂窝与小蜂窝组成的蜂窝异构网络为频谱效率的提升和无线链路传输性能的改善提供了巨大的潜力。然而,用户数量的增多,以及用户位置与传输习惯的不确定性,使得系统资源管理成为了重要的研究课题。本文针对异构网络中的频谱、能量等资源的分配优化问题进行了详细的分析。首先研究了在单个主用户、单个次级用户环境中感知时间对系统吞吐量的影响,通过推导和仿真验证了存在唯一的最佳感知时间能使次级用户的吞吐量最大,并以此结论为基础,研究了一种适用于多用户环境分时隙的感知时间与功率分配联合优化算法,能够在控制干扰和能量消耗的同时优化系统的吞吐量。除了感知时间以外,本文还从异构网络频率资源分配优化角度出发,分析了封闭式和开放式两种模式对系统性能的影响,并在此基础上研究了一种多用户环境下频率与功率联合分配算法,能够在保证主用户和次级用户服务质量的同时最大化接入用户的数量。
[Abstract]:With increasing demands on quality of wireless communication services continue to improve, wireless data traffic showing explosive growth. In the communication system and energy spectrum is a scarce resource, and the urgent need of more effective management. With the help of new technology of spectrum sensing, offers great potential for improving the macrocell and small cellular network cellular composition the spectral efficiency and improve the performance of wireless link transmission. However, the increase of the number of users, and the location of the user habits and transmission uncertainty, which makes the system resource management has become an important research topic. In this paper the spectrum in heterogeneous network, a detailed analysis of the distribution optimization problem of energy resources such as the first. Study in a single primary user, affect the perceived time of single secondary user environment on the throughput of the system, through the analysis and simulation to verify the existence of optimal perception only Time can maximize the throughput of the secondary user, and based on this conclusion, the joint optimization algorithm of sensing time and power allocation is studied for a multi user environment slot, to control interference and energy consumption and optimize the throughput of the system. In addition to perceived outside of time, the heterogeneous network frequency resource allocation optimization point of view, analyzes the influence of closed and open two modes on the performance of the system, and on the basis of a combination of frequency and power allocation algorithm in multi user environment, can guarantee the primary users and secondary users service quality while maximizing the number of access users.

【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN92

【参考文献】