本科畢業(yè)設(shè)計(jì)-bpsk調(diào)制解調(diào)系統(tǒng)的仿真設(shè)計(jì)-資料下載頁(yè)

【導(dǎo)讀】MATLAB的SIMULINK功能，對(duì)BPSK調(diào)制與解調(diào)的原理電路進(jìn)行仿真實(shí)現(xiàn)。書(shū)寫(xiě)規(guī)范，撰寫(xiě)畢業(yè)論文。也不太復(fù)雜，因而移頻鍵控在數(shù)字通信中首先獲得應(yīng)用。后來(lái)出現(xiàn)的相對(duì)移相鍵控，它的抗。起伏干擾能力比移頻鍵控強(qiáng)，而占用的頻帶并不更寬。在平均功率相同的條件下，移相鍵控。信號(hào)解調(diào)時(shí)，判決錯(cuò)誤的概率最小。因而在起伏干擾嚴(yán)重，且頻帶又比較緊張的信道中，移。相鍵控比移頻鍵控更受歡迎。信理論得以完整的學(xué)習(xí)認(rèn)識(shí)。在現(xiàn)有中近程防護(hù)體系上，研究近程防御體系。跟蹤、火控功能于一體，主要關(guān)注近程高速探測(cè)目標(biāo)。雷達(dá)信號(hào)對(duì)目標(biāo)參數(shù)的檢測(cè)，估計(jì)精。通過(guò)BPSK調(diào)制解調(diào)系統(tǒng)在雷達(dá)中發(fā)揮作用，使其精確探測(cè)近程目標(biāo)實(shí)施精確防。御打擊，保護(hù)重要目標(biāo)。因此，BPSK在其他領(lǐng)域運(yùn)用也相當(dāng)廣泛，在國(guó)內(nèi)外的數(shù)字通信，1繪制BPSK信號(hào)調(diào)制與解調(diào)的原理電路圖。設(shè)計(jì)，至四月下旬，基本完成了對(duì)原理框圖的設(shè)計(jì)。

　　

【正文】 識(shí)匱乏，怪自己以前理論知識(shí)掌握不夠到位。也不能夠?qū)⒗碚撝R(shí)與實(shí)踐緊密的結(jié)合起來(lái)，缺乏實(shí)踐經(jīng)驗(yàn)，本次課程設(shè)計(jì)最大的收獲就是學(xué)會(huì)了使用 MATLAB 的 SIMULINK 功能進(jìn)行仿真設(shè)計(jì)開(kāi)發(fā)，這在以后的工作學(xué)習(xí)中對(duì)我有很大的幫助。 剛開(kāi)始我對(duì) BPSK 調(diào)制解調(diào)原理的理論知識(shí)掌握得遠(yuǎn)遠(yuǎn)不夠，通過(guò)翻閱書(shū)籍資料了解了 BPSK 調(diào)制解調(diào)原理，繪制了原理框圖，為接下來(lái)的設(shè)計(jì)鋪墊好了理論的道路。 MATLAB 這個(gè)軟件 了解的不多，以前學(xué)習(xí)時(shí)沒(méi)認(rèn)真聽(tīng)講，一切從頭學(xué)起，先開(kāi)始了解 MATLAB 軟件的用戶(hù)界面，掌握了每個(gè)圖標(biāo)的功能，又開(kāi)始學(xué)習(xí)本次課程設(shè)計(jì)所要用到的 MATLAB 主要組件的 SIMULINK 功能，用 SIMULINK 功能進(jìn)行 BPSK仿真電路圖的設(shè)計(jì)，各個(gè)模塊參數(shù)的設(shè)置，最后經(jīng)過(guò)調(diào)試得到仿真結(jié)果。通過(guò)本次課程設(shè)計(jì)讓我收獲了很多以前沒(méi)有學(xué)到的知識(shí)和實(shí)踐經(jīng)驗(yàn)，培養(yǎng)了我刻苦鉆研的精神。在以后的工作學(xué)習(xí)當(dāng)中不論遇到什么困難告誡我耐心鉆研，功夫不負(fù)有心人總會(huì)有回報(bào)的。 西安文理學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 第 29 頁(yè) 致謝 本次畢業(yè)論文設(shè)計(jì)是在劉密歌 老師不辭辛苦的指導(dǎo)下完成的 。 劉老師 作為一名優(yōu)秀的、經(jīng)驗(yàn)豐富的教師，具有豐富的 專(zhuān)業(yè) 知識(shí)和 實(shí)踐 經(jīng)驗(yàn)，在整個(gè)論文 仿真設(shè)計(jì) 和論文寫(xiě)作過(guò)程中，對(duì)我進(jìn)行了耐心的指導(dǎo)和幫助，提出嚴(yán)格要求，引導(dǎo)我不斷開(kāi)闊思路，為我答疑解惑，鼓勵(lì)我大膽創(chuàng)新，使我在這一段寶貴的時(shí)光中，既增長(zhǎng)了知識(shí)、開(kāi)闊了視野、鍛煉了心態(tài)，又培養(yǎng)了良好的實(shí)驗(yàn)習(xí)慣和科研精神。在此，我向我的指導(dǎo)老師表示最誠(chéng)摯的謝意！ 在論文即將完成之際，我的心情久久無(wú)法平靜，從開(kāi)始選題到順利論文完成，有不知多少多少可敬的師長(zhǎng)、同學(xué)、朋友給了我無(wú)數(shù)的幫助。在學(xué)校的學(xué)習(xí)生活即將結(jié)束，回顧四年來(lái)的學(xué)習(xí)經(jīng)歷，面對(duì)現(xiàn)在的收獲，我感到無(wú)限欣慰。為此，我向熱心幫助過(guò)我的所有老師和同學(xué)表示由衷的感謝 ! 西安文理學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 第 30 頁(yè) 參考文獻(xiàn) [1] 樊昌信，曹麗娜﹒通信原理﹒北京：國(guó)防工業(yè)出版社， :210 [2] 張志涌 楊祖櫻等﹒ MATLAB 教程 R2021a﹒北京：北京航空航天大學(xué)出版社﹒ [3] 張肅文﹒高頻電子線路﹒北京：高等教育出版社﹒ 2021:463 [4] 王興亮﹒數(shù)字通信原理與技術(shù)（第二版）﹒西安：西安電子科技大學(xué)出版社 ,2021:210 [5] 邵玉斌 .Matlab/Simlink 通信系統(tǒng)建模與仿真實(shí)例分析 .清華大學(xué)出版社， 2021 [6] 常華，袁剛，常敏嘉 .仿真軟件教程 .清華大學(xué)出版社， 2021 [7] 沈振元，等 .通信系統(tǒng)原理 .西安：西安電子科技大學(xué)出版社， 2021 西安文理學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 第 31 頁(yè) 附錄 On Building BPSK Modulation and Demodulation by Software BPSK is a kind of digital modulation mode. Called, binary phase shift keying (BPSK) : use to transmit digital information carrier phase change, the amplitude and frequency remains the same. Digital modulation demodulation can be divided into the following kinds: 1, The phase shift keying (PSK) : with the plus or minus of the digital modulation signal control of carrier phase. Starting when digital signal amplitude of the timing and carrier phase take 0。 When the digital signal is negative, the amplitude of the carrier when starting phase in PI. Sometimes also on behalf of two or more symbols of the multiphase system of phase modulation is called phase shift keying. Phaseshift keying antiinterference ability is strong, but in the demodulation needs to have a correct reference phase, namely the need of coherent demodulation. 2, Amplitude shift keying (ASK) : with digital carrier modulation signal control on and off. 0 as in binary, not send carrier, when sending 1 send the carrier. Sometimes also called on behalf of more than one symbol of multilevel amplitude modulation amplitude shift keying. Amplitude shift keying but poor antijamming capability and easy to implement. 3, Frequency shift keying (FSK) : with the plus or minus of the digital modulation signal controls the frequency of the carrier. When digital signals for timing carrier frequency for f1, amplitude of the carrier frequency when digital signal amplitude of the negative is f2. Sometimes also on behalf of two or more symbols of multiband frequency modulation called frequency shift keying. FSK can distinguish pathways, but the antiinterference ability is inferior to phaseshift keying and differential phase shift keying. BPSK modulation demodulation method is as follows: first, the input of the random binary code waveform by single polarity conversion for the bipolar code, papers again with carrier multiplied after plete modulation process, through a bandpass filter papers on carrier39。s multiplication, after a low pass filter, finally gave the plete coherent demodulation process through sampling. In this paper, using of SIMULINK in MATLAB software ponents, SIMULINK is a visualization of MATLAB simulation tool, is also present in the dynamic system of modeling and simulation, etc. One of the most widely used tool. Specifically, Simulink is a system used for dynamic modeling, simulation and analysis software package, it supports linear and nonlinear system, continuous and discrete time model, or a mixture of both. System can also make a variety of sampling frequency of the system, and can be a 西安文理學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 第 32 頁(yè) multiprocess system. Simulink environment to work in a few years of development, has bee the mainstream of academic and industry used to modeling and simulation toolkit. In the Simulink environment, it provides users with block diagram modeling graphical interface, using the structure drawing model figure like hand in model on the paper freely, is convenient, so users only need to simply click and drag the model will be finished, and can direct system simulation, rapid simulation results are obtained。 ts main characteristic is: 1, modeling is convenient and fast。 2, easy to model analysis。 3, superior performance. Simulation software package it with the traditional differential equation and difference equation model, pared with the advantages of more intuitive, convenient and flexible. Simulink module library (or libraries) containing Sinks (output), the Sources (input), Linear (Linear) and Nonlinear (Nonlinear link), the Connection (connections from the interfaces) and Extra (other) link with different functions such as operation or function of Simulink library module (or library functions), and each corresponding functional modules are included in the model library, the user can also according to the need to customize and create your own modules. Using Simulink model can be created with hierarchical structure, so the user can use from top to bottom or from bottom to top of the structure create the model. Users can watch the model starting from the top, and then use the mouse to doubleclick on the subsystem module, to view the content below level, and so on, so you can see the details of the entire model, to help users understand the model of the relationship between structure and the modules. After a model defined, the user can throu