【摘要】：隨著移動(dòng)通信技術(shù)的發(fā)展,如今的商用網(wǎng)絡(luò)已經(jīng)從3G時(shí)代邁進(jìn)到4G時(shí)代,目前全球主流的4G技術(shù)為LTE網(wǎng)絡(luò)。LTE網(wǎng)絡(luò)相比過去的3G網(wǎng)絡(luò)有著高頻帶利用率,高傳輸速率和低延時(shí)性能等特點(diǎn)。雖然LTE網(wǎng)絡(luò)有著不錯(cuò)的性能優(yōu)勢,但是也有一些需要克服的技術(shù)難題。而LTE網(wǎng)絡(luò)的小區(qū)間干擾協(xié)調(diào)就是其中之一。本文重點(diǎn)研究的LTE小區(qū)間干擾協(xié)調(diào)技術(shù)。首先使用MATLAB軟件自行搭建了用于仿真LTE小區(qū)間干擾的仿真平臺。仿真平臺分為三個(gè)部分,六個(gè)模塊。通過該仿真平臺的運(yùn)行,可以得出一個(gè)干擾協(xié)調(diào)方案的用戶接收信噪比,吞吐量和覆蓋率。同時(shí)通過仿真觀察和分析了部分頻率復(fù)用技術(shù)和軟頻率復(fù)用技術(shù)在LTE小區(qū)間干擾方面的改善,通過仿真指出了以上兩種方案的優(yōu)點(diǎn)和缺點(diǎn)。之后在分析以上兩種方案特點(diǎn)后,提出了一種具有自適應(yīng)性的軟頻率復(fù)用技術(shù),該自適應(yīng)軟頻率復(fù)用方案,可以根據(jù)用戶在小區(qū)內(nèi)的不同的分布情況,選擇不同的工作模式,其目的在于提高用戶的接收信噪比,增大吞吐量的同時(shí)提高覆蓋率,該方案通過自己搭建的LTE仿真平臺,仿真證明新提出的方案比較之前的兩種方案在抗小區(qū)間干擾這一方面有更好的優(yōu)勢。
[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.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5

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本文編號：2188538