全数字BPSK调制解调系统的仿真  

Simulation for all-digital BPSK modulation and demodulation system

作　　者：孟利民[1] 朱健军[1] 赵新建[1] 周利民[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310032

出　　处：《浙江工业大学学报》2003年第1期42-47,共6页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目 (6 0 10 83)

摘　　要：现代通信越来越依靠全数字处理技术 ,通信系统中的全数字调制解调意味着发射机及接收机将全部采用数字信号处理 ( DSP)算法 ,从而整个通信系统就可以用 DSP芯片或超大规模集成电路 ( VL SI)器件来实现。对全数字 BPSK调制解调系统采用计算机仿真的方法进行研究能清楚地了解通信系统中所运用的数字信号处理技术 ,包括信息源、发送和接收滤波器、内插器以及判决器等全部采用数字信号处理算法来实现。文章给出了 BPSK调制解调系统各个模块的算法和结构 ,运用 MATL AB软件进行了仿真 ,得出了各个部分的时域和频域波形图 ,系统仿真的设计方法对 QPSK、1 6QAM等全数字调制解调系统的硬件实现具有实际的指导意义。All\|digital processing technology is indispensable in modern communication. All\|digital modulation and demodulation mean that the transmitter and receiver will adopt digital signal processing (DSP) algorithm entirely. So all communication systems may be implemented by DSP chips or VLSI devices. Through the research on all\|digital modulation and demodulation system by computer simulation, we can clearly understand the digital signal processing technology of communication system we use including the implementation of information stream, the transmiting filter and receiving filter, the interpolator, and the slicer, etc. by using digital signal processing algorithm entirely. This paper describes the algorithm and architecture of several modules in the BPSK modulation and demodulation system . The all\|digital BPSK modulation and demodulation system is simulated by applying MATLAB software. It presents various figures of the time field and the frequency field. The design scheme of system simulation takes on actual significance for the hardware implementation of QPSK,16QAM , etc. of all-digital modulation and demodulation systems.

关 键 词：BPSK 全数字调制解调系统 数字信号处理 MATLAB软件 系统仿真 DSP 通信系统 

分 类 号：TN761[电子电信—电路与系统] TP391.9[自动化与计算机技术—计算机应用技术]