內(nèi)容簡介:
本科畢業(yè)設(shè)計 基于MATLAB的脈沖編碼調(diào)制(PCM)
脈沖編碼調(diào)制|模擬信號|數(shù)字信號|MATLAB軟件|數(shù)字溫度計
文件格式:word+PPT
一套完整的畢業(yè)設(shè)計,包括任務(wù)書、開題報告、論文正文、畢業(yè)答辯PPT、外文翻譯。
有預(yù)覽文件請查看。
論文正文共29頁。共16759個字符數(shù)(不計空格)。整套壓縮包大。908KB。
外文翻譯 Pulse-Code Modulation(脈沖編碼調(diào)制) 共9984個字符數(shù)(不計空格)。
摘要
現(xiàn)在數(shù)字技術(shù)的普及,集成電路的發(fā)展,從觀念上顛覆了傳統(tǒng)的測控技術(shù),傳統(tǒng)的模擬信號可測,但可控性較差,隨著電子技術(shù)的發(fā)展,高性能的控制核心的出現(xiàn),使得信號的能控型大大增強,并且可以完成很人性化的人機交互功能。但是現(xiàn)實中的幾乎所有被測數(shù)據(jù)都是模擬量,那么,要想讓控制核心讀懂這些數(shù)據(jù),就必須先將其數(shù)字化。數(shù)字通信系統(tǒng)己成為當(dāng)今通信的發(fā)展方向, 然而自然界的許多信息通過傳感器轉(zhuǎn)換后, 絕大部分是模擬量, 脈沖編碼調(diào)制( PC M ) 是把模擬信號變換為數(shù)字信號的一種調(diào)制方式,主要用于語音傳輸,,在光纖通信、數(shù)字微波通信、衛(wèi)星通信中得到廣泛的應(yīng)用。借助于M AT LA B 軟件, 可以直觀、方便地進行計算和仿真。因此可以通過運行結(jié)果,分析系統(tǒng)特性。
本課題主要研究脈沖編碼調(diào)制PCM的原理以及過程。模擬信號經(jīng)抽樣、量化、編碼后變換成數(shù)字信號,經(jīng)信道傳送到接收端的譯碼器, 由譯碼器還原出抽樣值,再經(jīng)低通濾波器濾出模擬信號,便可得到重建信號。
關(guān)鍵字:脈沖編碼調(diào)制,模擬信號,數(shù)字信號,M AT LA B 軟件
Pulse Code Modulation ( PCM ) Based on MATLAB
Abstract:Now the popularity of digital technique, the development of integrated circuits, from concept to subvert the traditional measurement and control technology, the traditional analog signal can be measured, but the controllability is poor, with the development of electronic technology, high performance control core, makes the signal can control increases greatly, and can complete a humanized human-computer interactive function. But in almost all the measured data are analog, so, want to let the control core to read these data, it must first be digitized. Digital communication system has become the communications development direction, however many of nature’s information through the sensor after the conversion, the majority is analog, pulse code modulation ( PC M ) is the analog signal into digital signal of a modulation mode, mainly used for voice transmission,, in the optical fiber communication, digital microwave communication, satellite communication widely used in. With the help of M AT LA B software, can be intuitive, convenient for calculation and simulation. So the operation results, analysis of system characteristics.
This thesis mainly studies the pulse code modulation PCM principle and process. Analog signal by sampling, quantization, coding transform into digital signals, the channel is transmitted to the receiving end of the decoder, a sampling value by the decoder, and then passed through a low pass filter to filter out the analog signal, we can get the reconstructed signal.
Keywords: Pulse Code Modulation, The Analog Signal, Digital Signal, M AT LA B Software
目錄
摘要 I
Abstract II
第一章 緒論 1
1.1 背景以及意義 1
1.2 發(fā)展前景 1
第二章 脈沖編碼采樣 4
2.1采樣(Sampling) 4
2.2 采樣的特點 5
第三章 脈沖編碼的量化 8
3.1量化(Quantizing)概念 8
3.2模擬信號的均勻量化 8
3.3模擬信號的非均勻量化 11
第四章 PCM編碼 15
4.1 編碼(Coding) 15
4.2模擬信號的編碼 15
4.3無噪聲干擾下時PCM編碼 19
4.4 PCM系統(tǒng)中噪聲的影響 22
第五章 結(jié)論 23
參考文獻(References) 23
致 謝 25
相關(guān)說明:
1. 如您下載的資料不止一份,建議您注冊成為本站會員。會員請登錄后下載。
2. 會員購買金幣50元以下,0.7元/個,50元以上,0.5元/個。具體請看:下載與付款。
3. 會員48小時內(nèi)下載同一文件,不重復(fù)扣金幣。
4. 下載后請用WinRAR或 WinZIP解壓縮后使用。
5. 如仍有其他下載問題,請看常見問題解答。
下載地址:
|