功率控制分析（论文）

2014 届本科毕业设计（论文）

LTE功率控制分析

Analysis of LTE power control

学 院：__ _ _____ __ 专业班级： 姓 名：__ __ ___ ____ 学 号：_ _ __ 指导教师：_ ___ __ 完成时间：

二〇一四年三月

论文题目：LTE功率控制分析 专业：

学生： 签名： 指导教师： 签名：

摘要

近几年，通信技术又上升了一个台阶，LTE是3G之后无线通信技术的演进技术。与3G不同，LTE采用全新的设计方法，主要技术包括：OFDM、OFCDMA、SC-FDMA及MIMO(多天线传输和接收)，表现最为卓越的地方在LTE的数据业务，上百兆的下载速率进一步满足了现代社会人们对上网的需求。与此同时为保障良好网络环境和通信环境，减小邻区干扰，改善扇区边界用户干扰和弱覆盖等问题。功率控制无形中成了解决这些问题的键因素，合理功率可以满足正常的通信需求。

功率控制可以尽量平衡小区的SINR值，对网络和通信环境的优化起到比较重要的作用。本文通过对上行功率控制、下行功率控制和SRS功率控制的来分析邻区干扰、弱覆盖等问题存在的原因。主要基于用户位置，根据RSRP的值估计出不同用户的路径损耗，再根据不同路径损耗的大小将用户划归到不同区域，然后对特定的区域进行相应的功率算法，通过仿真验证了该方法可以有效减小小区干扰，提高了系统吞吐量。

关键词:功率控制；路径损耗；吞吐量；

Title: Analysis of LTE power control Major: Name: Signature: Supervisor: Signature: ABSTRACT

In recent years, communication technology and up a step, LTE is after 3 g wireless communication technology evolution.Different from 3 g, LTE adopt new design method of main techniques include:OFDM、OFCDMA、SC- FDMAandMIMO(Multiple transmit and receive antenna)Performance is the most remarkable place in LTE data business, hundreds of megabytes of download speed further meet the needs of the modern society, people on the Internet.At the same time to ensure good communication environment and network environment, reduce the neighborhood interference, improve the sector boundary problem such as user interference and weak coverage.Power control virtually become the key factor to solve these problems, reasonable power can meet the demand of normal communication.

Power control can balance district SINR value as far as possible, the optimization of network and communication environment play a more important role.This article through to the uplink power control, downlink power control and power control of SRS to analyze neighborhood interference, the reasons of the existence of such problems as weak coverage.Mainly based on the user's location, according to different user's RSRP value estimate the path loss, according to different path loss will be the size of the user into the different areas, and then the corresponding power algorithm for specific areas, the method is verified by the simulation can effectively reduce the neighborhood interference, improve the system throughput.

Key words: Power control;Path loss;Throughput;

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