atlab

说明：  设计一个巴特沃兹数字低通滤波器，其技术指标为：3dB带宽为0.2π，阻带截止频率为0.3π，通带纹波为1dB，阻带衰减大于30dB，采样间隔T=10ms。 1）采用冲激响应不变法； 2）采用双线性变换法设计； 3）采用FIR的窗函数（Hanning窗、Hamming窗或Blackman窗）设计。(A Butterworth digital low-pass filter is designed. Its technical specifications are: 3 dB bandwidth is 0.2 pi, stopband cut-off frequency is 0.3 pi, passband ripple is 1 dB, stopband attenuation is more than 30 dB, sampling interval T=10 Ms. 1) Impulse response invariance method is adopted. 2) Design by bilinear transformation method; 3) FIR window function (Hanning window, Hamming window or Blackman window) is used to design.)

包含有数字通信课程实验大作业报告与代码。完成的OFDM的收发包含：1.卷积编码、2.自动增益控制、3.极大似然判决、4.QPSK收发、5.帧检测等，代码在MATLAB2016b环境下编译通过(It contains the report and code of the experiment assignment for the course of digital communication. The completed OFDM transceiver includes: 1. convolutional coding, 2. automatic gain control, 3. maximum likelihood decision, 4. QPSK transceiver, 5. frame detection, etc. The code is compiled and passed in MATLAB2016b environment.)

对移动通信中的多径多普勒频移进行详细的仿真，对学习这个的朋友有极大的帮助(Of mobile communication in multi-path Doppler frequency shift to conduct a detailed simulation study of the friends of great help)

相干解调的程序代码，可用于光电检测,包括光纤传感、分布式检测等 (heterodyne detection code ,is used for opto-electronic)

BPSK调制方式AWGN信道的理论误码率、仿真误码率以及瑞利信道下的理论值和仿真误码率(Theoretical BER of BPSK modulation AWGN channel BER simulation and theoretical value of the Rayleigh channel simulation error rate)

主要关于卷积码的程序实现，有源代码及运行结果。(Convolutional codes is mainly concerned with the program, source code and operating results.)

高斯一阶导数生成的UWB单脉冲信号，脉冲宽度为0.5ns(Gaussian first derivative monopulse generated UWB signal, pulse width of 0.5ns)

OFDM及其基带FFT实现原理以及OFDM的载波和符号同步问题(and OFDM baseband FFT principle and the carrier OFDM symbols and Synchronization)

N79E814+pan3020c 433无线收发例程(N79E814+pan3020c DEMO CODE)

void swap1(int x, int y) //值传递 void swap2(int *px, int *py) //指针传递 void swap3(int &x, int &y) //引用传递 的使用(void swap1(int x, int y) //值传递 void swap2(int*px, int*py) //指针传递 void swap3(int &x, int &y) //引用传递 的使用)