LTE小区间干扰协调仿真研究
发布时间：2018-08-17 18:38
【摘要】：随着移动通信技术的发展,如今的商用网络已经从3G时代迈进到4G时代,目前全球主流的4G技术为LTE网络。LTE网络相比过去的3G网络有着高频带利用率,高传输速率和低延时性能等特点。虽然LTE网络有着不错的性能优势,但是也有一些需要克服的技术难题。而LTE网络的小区间干扰协调就是其中之一。本文重点研究的LTE小区间干扰协调技术。首先使用MATLAB软件自行搭建了用于仿真LTE小区间干扰的仿真平台。仿真平台分为三个部分,六个模块。通过该仿真平台的运行,可以得出一个干扰协调方案的用户接收信噪比,吞吐量和覆盖率。同时通过仿真观察和分析了部分频率复用技术和软频率复用技术在LTE小区间干扰方面的改善,通过仿真指出了以上两种方案的优点和缺点。之后在分析以上两种方案特点后,提出了一种具有自适应性的软频率复用技术,该自适应软频率复用方案,可以根据用户在小区内的不同的分布情况,选择不同的工作模式,其目的在于提高用户的接收信噪比,增大吞吐量的同时提高覆盖率,该方案通过自己搭建的LTE仿真平台,仿真证明新提出的方案比较之前的两种方案在抗小区间干扰这一方面有更好的优势。
[Abstract]:With the development of mobile communication technology, the commercial network has moved from 3G era to 4G era. At present, the mainstream 4G technology in the world is LTE network. LTE network has high frequency band utilization compared with 3G network in the past. High transmission rate and low delay performance. Although LTE networks have good performance advantages, there are some technical problems to overcome. The inter-cell interference coordination of LTE network is one of them. This paper focuses on the LTE inter-cell interference coordination technology. Firstly, a simulation platform for simulating LTE intercellular interference is built by using MATLAB software. The simulation platform is divided into three parts and six modules. Through the operation of the simulation platform, the user receiving SNR, throughput and coverage rate of an interference coordination scheme can be obtained. At the same time, the improvement of partial frequency multiplexing and soft frequency multiplexing in LTE cell interference is observed and analyzed by simulation. The advantages and disadvantages of these two schemes are pointed out by simulation. After analyzing the characteristics of the above two schemes, a self-adaptive soft frequency multiplexing technique is proposed. The adaptive soft frequency multiplexing scheme can select different working modes according to the different distribution of users in the cell. The purpose of the scheme is to improve the reception signal to noise ratio of the user, increase the throughput and increase the coverage rate at the same time. The scheme is based on the LTE simulation platform built by itself. Simulation results show that the proposed scheme has better advantages in resisting inter-cell interference than the previous two schemes.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5
本文编号：2188538
[Abstract]:With the development of mobile communication technology, the commercial network has moved from 3G era to 4G era. At present, the mainstream 4G technology in the world is LTE network. LTE network has high frequency band utilization compared with 3G network in the past. High transmission rate and low delay performance. Although LTE networks have good performance advantages, there are some technical problems to overcome. The inter-cell interference coordination of LTE network is one of them. This paper focuses on the LTE inter-cell interference coordination technology. Firstly, a simulation platform for simulating LTE intercellular interference is built by using MATLAB software. The simulation platform is divided into three parts and six modules. Through the operation of the simulation platform, the user receiving SNR, throughput and coverage rate of an interference coordination scheme can be obtained. At the same time, the improvement of partial frequency multiplexing and soft frequency multiplexing in LTE cell interference is observed and analyzed by simulation. The advantages and disadvantages of these two schemes are pointed out by simulation. After analyzing the characteristics of the above two schemes, a self-adaptive soft frequency multiplexing technique is proposed. The adaptive soft frequency multiplexing scheme can select different working modes according to the different distribution of users in the cell. The purpose of the scheme is to improve the reception signal to noise ratio of the user, increase the throughput and increase the coverage rate at the same time. The scheme is based on the LTE simulation platform built by itself. Simulation results show that the proposed scheme has better advantages in resisting inter-cell interference than the previous two schemes.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5
【参考文献】
相关博士学位论文 前1条
1 蒋椺琳;OFDMA系统小区间干扰消除与资源分配算法研究[D];哈尔滨工业大学;2011年
，本文编号：2188538
本文链接：https://www.wllwen.com/kejilunwen/wltx/2188538.html
