在科技迅猛發(fā)展的今天，大量的信息交流離不開當(dāng)今社會(huì)生活的方方面面，所以數(shù)字通信系統(tǒng)占據(jù)了重要地位，信號的調(diào)制與解調(diào)，就在通信中起著非常重要的作用，并且在信號傳輸過程中使信號的安全性和傳輸特性大大提高，BPSK信號是系統(tǒng)傳輸中一種基礎(chǔ)簡便的信號，對外界的干擾能力有著很強(qiáng)的抗干擾能力，有著無可限量的發(fā)展空間。

所以，我接下來便認(rèn)真對照了不同的資料學(xué)習(xí)了 BPSK信號調(diào)制解調(diào)的基礎(chǔ)的知識(shí)原理后，我又進(jìn)行了對MATLAB軟件中的SIMMULINK中各個(gè)功能模塊進(jìn)行了學(xué)習(xí)，一步步熟悉了對MATLAB代碼的編寫和調(diào)試等功能，對想研究的各個(gè)信道中BPSK解調(diào)前后的仿真對比以此波形差異來分析本系統(tǒng)的性能，最后通過對比調(diào)試等對本次課題的結(jié)果進(jìn)行討論，并總結(jié)出最后的結(jié)論。

論文對BPSK信號的不同的信道中調(diào)制解調(diào)中所得到的不同的效果結(jié)論進(jìn)行了仿真和論述，使用了 MATLAB以及MATLAB中的simulink進(jìn)行了仿真處理。論文起初簡述了 BPSK信號調(diào)制解調(diào)仿真的研究意義以及發(fā)展趨勢，之后后介紹了 MATLAB軟件的實(shí)現(xiàn)和使用，接下來介紹了不同信道的概念和研究的方法及其研究的意義。在此基礎(chǔ)上，論文提出了在不同信道下的調(diào)制解調(diào)的對比并且進(jìn)行了功率譜和誤碼率的對比。最后，本文學(xué)者對BPSK信號調(diào)制解調(diào)的仿真結(jié)果進(jìn)行了綜合的分析，做出概括和總結(jié)。

關(guān)鍵詞：BPSK；信道；調(diào)制；解調(diào)；MATLAB

ABSTRACT

In today's rapid development of science and technology, large amount ofinformation depends on all parts of today9 s social life, which makes the digitalcommunication system becomes an important position, because of that, themodulation and demodulation of signals play an very important role ofcommunication which improves the safety and transmission characteristics ofdigital communication process. BPSK signal is a simple signal incommunication system, which has good antijamming ability and with unlimitedspace for development.

Therefore, after comparing different learning material carefully I learned thebasic knowledge of principle of BPSK signal modulation and demodulation, I beginto learn the SIMMULINK each functional component of MATLAB system familiarwith the modulation and demodulation of MATLAB code. After simulationcomparison on the different channel of BPSK demodulation and the performance ofsystem is analyzed by the waveform difference, the final conclusion whether designpractice and theory. The paper9s simulation and statement the modulation anddemodulation of BPSK signal in different channel and use simulation between thesimulink of MATLAB and MATLAB. Firstly, the research of the significance anddevelopment trend of BPSK signal modulation and demodulation simulation arebriefly introduced in this paper, secondly, the implementation and

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