OFDM的信道估計

全文22頁 約12000字 論述翔實

摘 要
OFDM技術作為新一代的通訊技術，已被廣泛應用于通信系統(tǒng)以及廣播式音頻和視頻領域中。隨著該技術的不斷完善，其已經日益滲透到了我們的日常生活中。本文的主要研究課題是正交頻分復用（OFDM）系統(tǒng)的信道估計，前兩章主要對正交頻分復用（OFDM）系統(tǒng)的發(fā)展現(xiàn)狀，以及其相關技術和基本原理進行了簡要的概述。其中，對OFDM系統(tǒng)的工作原理，工作模塊以及技術特點等都作了比較詳細的論述。
從第三章開始，本文主要論述了信道估計的算法。首先，本文介紹了正交頻分復用系統(tǒng)信道估計的重要作用，在此基礎上，本文詳細的介紹了信道估計算法的原理以及基本構造思想，利用數(shù)學建模的方法較為直觀的反映了信道估計算法的特性，并系統(tǒng)的闡解了算法的工作流程。其中，在論述系統(tǒng)模型建立的過程中，本文利用公式以及仿真圖對系統(tǒng)建模作出了比較全面的分析。而在對仿真結果的分析過程中，本文大量引用得到的試驗結論進行驗證，從而使信道估計算法在試驗的層面上得到了準確的論證，使有關信道估計算法的問題都作了比較全面的闡述。

關鍵詞：正交頻分復用系統(tǒng)，信道估計算法

ABSTRACT
As the new generation communication technique. OFDM technology has already used widely in the audio, video and communication system of the radio type at present. It has already permeated through our daily life day by day. This textual main research topic is the channel estimation algorithm of Orthogonal Frequency Division Multiplexing. From two of the chapters, this text has brief summary the handing, dividing, replying and using (OFDM) the systematic current situation of the development frequently mainly, and its also relevant technology and basic principle carry on the brief summary. Among them, to the principle of OFDM system, job module and the characteristic of the technological which have been done the detailed argumentation.
Begin from the chapter three, this text expound the fact of the algorithms that the channel estimation mainly, first of all, this text has been introduced and the important function of the channel estimation algorithm of Orthogonal Frequency Division Multiplexing ,on this basis, this text Introduce the detailed introduction of the channel estimation algorithm, also essentialing structure. Utilizing the characteristics of the channel estimation algorithms of reflection with comparatively ocular method of mathematics modeling.this text also has explained the solved of the work about the channel estimation algorithm. Among them, during the process of describing the systematic model to set up, this text utilizes the formula and picture to make more overall analysis about modeling systematically. In the course of analysis on artificial result, a large number of of this text quotes conclusion to got to verify. Thus make the channel estimation algorithms get accurate demonstration on the aspect of the test. Make the relevant problem have a overall elaborate about the channel estimation algorithm.
Keywords: Orthogonal Frequency Division Multiplexing; Channel estimation algorithm