AWGN噪聲中正弦信號的檢測與仿真

電子信息工程論文編號:DZXX049  論文字?jǐn)?shù):8228,頁數(shù):22

 目錄
摘要 I
ABSTRACT II
第1章 引言 1
 1.1研究的背景 1
 1.1.1 理論背景 1
 1.1.2 仿真背景 2
 1.2 研究內(nèi)容 2
第2章 理論分析 4
 2.1 接收機模型 4
 2.2 信號的匹配濾波器 5
 2.3 信號的判決門限 6
 2.4最佳差錯性能 7
 2.5 ASK系統(tǒng)的誤碼率 8
第3章 系統(tǒng)軟件設(shè)計 11
 3.1動態(tài)系統(tǒng)仿真軟件System View簡介 11
 3.2 System View軟件進行通信系統(tǒng)的動態(tài)仿真步驟 11
 3.3 系統(tǒng)的分步說明 11
 3.3.1 積分清除濾波器 11
 3.3.2 重采樣 12
 3.3.3 門限判決 12
 3.4 系統(tǒng)設(shè)計 13
 3.4.1 說明 13
 3.4.2 定時與參數(shù)設(shè)置 13
 3.4.3 全局參數(shù)關(guān)聯(lián) 14
 3.4.4 系統(tǒng)圖 15
 3.5 仿真分析 15
 3.6 FSK仿真結(jié)果 16
第4章 系統(tǒng)設(shè)計總結(jié) 17
致謝 18
參考文獻 19

摘要

 隨著技術(shù)的發(fā)展,現(xiàn)代無線通信系統(tǒng)功能日趨強大,性能指標(biāo)越來越高,無線通信系統(tǒng)越來越復(fù)雜其工作的過程描述又很抽象。與此相對應(yīng)的是,研制費用不斷上升,對各部分及系統(tǒng)的研究變得更加困難。如果無線通信系統(tǒng)的研究全部用實際設(shè)備來實現(xiàn),人力、物力、財力花費都是巨大的,而且研制周期也會增加,此外有的研究實際的設(shè)備也不一定能有效地實現(xiàn)。因此,通信信號模擬仿真以其經(jīng)濟、靈活和逼真等特點逐漸成為通信系統(tǒng)的設(shè)計分析過程中不可或缺的手段。
   本文第一章主要講述了通信系統(tǒng)的檢測和仿真的重要性。第二章主要從理論層次上論述了通信中信號在AWGN噪聲中的檢測的方法，具體的以ASK信號為模型，通過對其最佳接收機的建立和最優(yōu)判決門限的設(shè)定，得到信號的檢測目的。最后第三章介紹了system view軟件虛擬儀器建立的方法，進行ASK信號進行的仿真檢測，驗證理論的正確性。

關(guān)鍵詞： AWGN，ASK，System View，仿真分析

ABSTRACT

 With the development of technology, the functions of modern wireless communication system are becoming much stronger and the performance index of wireless are much higher. Complexity of communication system is increasing and the procedure description is very abstract. Corresponding to this, the cost of development is increase and the system of each part of the study become much more difficult. If the study of a wireless communication system to achieve with full practical equipment, ,not only costs of human、 material and financial resources are huge, but also increases the development cycle, besides some research facilities are not can effectively achieve. Therefore, analysis process plays an important part in design of communication system because of its economic simulation, flexible and lifelike features.
 This first chapter described the importance of testing and simulation in communication system basically. The second chapter basically discussed the method to detect sinusoidal signal with AWGN noise, as ASK signals for example. This chapter also described how to calculate or set the best judgment threshold of receiver. The third chapter presented the method to detect and simulate signal using System View .The result of simulation is in accordance with the theory..

Keywords: AWGN, ASK, System View, Simulation