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linux下串口编程
- 串行口是计算机一种常用的接口，具有连接线少，通讯简单，得到广泛的使用。常用的串口是RS-232-C接口(又称EIA RS-232-C)它是在1970年由美国电子工业协会(EIA)联合贝尔系统、调制解调器厂家及计算机终端生产厂家共同制定的用于串行通讯的标准。它的全名是\"数据终端设备(DTE)和数据通讯设备(DCE)之间串行二进制数据交换接口技术标准\"该标准规定采用一个25个脚的DB25连接器，对连接器的每个引脚的信号内容加以规定，还对各种信号的电平加以规定。传输距离在码元畸变小于4%的情况下，
baseband_detection_simulink
- In this simulink model , baseband binary detection is simulated .A rectangular pulse shaped signal is given as input to the detector.The received signal is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying
VCDigitalSignalProgressing
- VC实现数字图像处理、数字信号处理、内存管理、画饼状图柱状图、QQ广告栏、经纬度转换、将二进制代码写入excel、正旋发生器-VC digital image processing, digital signal processing, memory management, drawing pie chart histogram, QQ billboards, longitude and latitude conversion, the binary code into excel, is ro
BPSK_product_noise_20M
- 雷达信号中的常规信号和二相编码信号的时域及频域代码-Radar signal in conventional signal and binary phase coded signal in time domain and frequency domain code
UWBPPPM
- 这是一个UWB的PPM调制的整个程序，二进制信号调制的仿真程序，很实用的源码-This is a UWB PPM modulation, the entire program, the simulation program of the binary signal modulation, a very useful source
UMATTLAB-FFSKs
- 用MATLAB产生FSK调制信号1．实验要求： （1）随机产生一个包含十个元素的数组，该数组中的元素非0即1，用作FSK信号的输入数据。 （2）对该数组中中的二进制数进行FSK调制，0调制在5000Hzz上，1调制在8000Hz上，码元速率为200码元/秒。 （3）画出所产生的FSK信号的时域图形与频域图形。 -FSK signal using MATLAB. The experimental requirements: (1) randomly generate a 10 element
LTE_demodulate
- LET demodulate解调函数，ZF算法，最小距离估计。-Finds minimum distance estimate of each received signal and returns the corresponding binary codeword. Use a Zero-Forcing approach for convenience
Binary_ASK
- binary amplitude shift keying-- shifting amplitude according to signal amplitude
Digital Modulation Techniques Basic Concepts
- The phase of the output signal gets shifted depending upon the input. These are mainly of two types, namely Binary Phase Shift Keying (BPSK) and Quadrature Phase Shift Keying (QPSK), according to the number of phase shifts. The other one is Different
NEW_waveform32
- 产生2^5的二进制PRBS信号，编码成单极性NRZ,RZ信号并绘制出波形，把2^5的PRBS信息码编码成HDB3码和差分双向码并绘制出波形(The binary PRBS signal generated by 2^5 is coded into unipolar NRZ, RZ signal, and the waveform is plotted. The PRBS information code of 2^5 is encoded into HDB3 code and different
基于MATLAB的MSK调制解调实现
- 利用MATLAB集成环境下的M文件，编写程序来实现MSK的调制解调，并绘制出解调前后的时域和频域波形及叠加噪声时解调前后的时频波形，根据运行结果和波形来分析该解调过程的正确性及信道对信号传输的影响。通过这次课程设计进一步加深了我对最小二进制相移键控（MSK）调制解调性能的理解与掌握，同时将课堂上学到的理论知识用于实践。增强了我在模拟仿真方面的能力，为以后系统开发和通信系统仿真打下了良好的基础。(The use of MATLAB in the integrated environment of
ask
- 运用matlab，通过输入二进制信号对载波进行调制，产生ask信号(Using MATLAB, the carrier is modulated by the input binary signal to produce the ASK signal)
差分调制与解调
- 此代码通过随机生成二进制码，对其进行二进制差分调制，以及加入高斯白噪声后对其解调计算误码率，绘制出其输入信噪比与输出信噪比的实验曲线及理论曲线的比较。(This code generates binary codes randomly, modulates them by binary differential modulation, demodulates them with Gauss white noise and calculates the bit error rate, draws