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DSSS
- 设计一个有干扰的直接序列扩频通信系统， PN码由m序列产生器产生，经过高斯白噪声信道。在接收端接收到的信号包括“有用信号+高斯白噪声+干扰”，将接收信号进行解扩，判决，得到用户的信号检测结果，绘制不同的扩频增益（增益值为10，30，50）下，误比特率随信噪比Eb/N0的变化曲线。-Design of a direct sequence spread spectrum interference system, PN code generated by the m sequence generato
16qam_channel_encode
- 一、 本程序采用16QAM调制方式，对一串2进制信源进行调制，采用（7，4）循环码对信源做信道编码，用升余弦滚降函数进行基带调制，再调到高频信道；在信道上加入高斯白噪声，运用匹配滤波器解调，画出解调星座图，运用最小欧氏距离译码判决，再对信号进行信道解码，画出采用信道编码技术和不采用信道编码技术的误比特率图。-First, this program uses 16QAM modulation mode, for a string of two binary source is modulated,
works
- QPSK系统在无线通信信道中的仿真,通过对有若干条（大于2条）路径的无线多径衰落信道中的QPSK系统进行误码率性能仿真，并在与理想的高斯加性白噪声信道中同样系统的BER性能进行比较，利用SA方法给出本仿真模型的仿真结果-QPSK system in the wireless communications channel simulation, through a number of articles (more than 2) the path of wireless multi-path fa
matlab
- 用MATLAB编写程序实现BPSK的调制与解调过程，并且为了模拟数字通信系统过程，在调制后加入高斯白噪声。-MATLAB program used to prepare the BPSK modulation and demodulation process, and in order to simulate the process of digital communication system, in the modulated Gaussian white noise after.
ofdm1
- 利用卷积编码和BPSK调制方式，关于高斯白噪声信道下信噪比与比特误码率关系的Simulink仿真-The use of convolutional coding and BPSK modulation on the Gaussian white noise channel ,the relationship between SNR and bit error rate using Simulink simulation
simpleOFDM
- OFDM仿真程序，基于QPSK调制，信道模型为高斯白噪声信道-OFDMsimulation
qam
- 一、 本程序采用16QAM调制方式，对一串2进制信源进行调制，用升余弦滚降函数进行基带调制，再调到高频信道；在信道上加入高斯白噪声，运用匹配滤波器解调，画出解调星座图，运用最小欧氏距离译码判决，计算误比特率。-First, this program uses 16QAM modulation mode, for a string of two binary source is modulated with a raised cosine roll-off function for base-ba
bpsk_Awagn_Rayleigh
- 实现了一个直接扩频系统，使用BPSK作为调制解调方法。并比较白噪声AWGN及瑞利衰落(rayleigh fading)环境下，误码率的影响。-There are two files in the zip folder. bpsk_spread.m and jakesmodel.m Steps for simulation: 1] Run jakesmodel.m first 2] Then run bpsk_spread.m . 3] Note that during the f
qpsk
- QPSK的MATLAB仿真，包括调制和解调，添加了高斯白噪声-QPSK the MATLAB simulation, including the modulation and demodulation, added white Gaussian noise
matlab-cdma
- 它是基于matlab的CDMA通信仿真，包含白噪声加入的整个物理链路过程，还有瑞利衰落分析、信噪比分析和误码率分析。 -It is based on the matlab CDMA communication simulation, including white noise to join the whole process of physical link, and the Rayleigh fading analysis, signal-to-noise ratio analysis
OFDM-Matlab-Code-text-file
- 在高斯白噪声影响下 OFDM系统中最小二乘法与最小方差法误比特率比较 -In OFDM system, compare the difference between LS and MV scheme of BER performance based on AWGN
MATLAB
- OFDM发送接收基本功能实现，循环前缀、加窗、通过高斯白噪声信道-OFDM u53D1 u9001 u63A5 u6536 u57FA u672C u529F u80FD u5B9E u73B0
ask
- 利用matlab软件设计并仿真下面的无线通信系统。模拟信源为单音频信号。模拟调制方式为ASK。信道为多径信道（仿真中2径），信道中噪声为加性高斯白噪声。采用相干解调接收。画出了解调器输出端性能曲线与点信噪比SNR的关系。(Matlab software is used to design and simulate the following wireless communication systems. The analog source is a single tone signal. The
直接序列扩频系统仿真
- 建立了直接序列扩频系统的matlab仿真模型，在信道中存在高斯白噪声和干扰的情况下，对系统的在不同扩频增益下的误码率性能进行了仿真及分析，分析了扩频码的自相关性、误码率、性噪比。(A matlab simulation model of the direct sequence spread spectrum system, the existence of Gauss white noise and interference in the channel under the condition
OFDM
- 利用MATLAB软件对OFDM系统做出仿真。仿真中采用QPSK调制技术，并加入高斯白噪声，最终得到QPSK星座映射图以及BER曲线图。由仿真结果可以看出，OFDM在高斯信道具有良好的抗噪声性能，误码率较低。(MATLAB software is used to simulate the OFDM system. In the simulation, QPSK modulation technology is used, and Gauss white noise is added, and th
IS95前向链路系统
- IS95前向链路系统:此函数用于IS-95前向链路系统的仿真，包括扩频调制，匹配滤波，RAKE接收等相关通信模块。 仿真环境: 加性高斯白噪声信道.(IS95 forward link system: this function is used for the simulation of IS-95 forward link system, including spread spectrum modulation, matched filtering, RAKE reception and
LDPC
- lpdc编码的实现，详细代码，高斯白噪声信道，多重译码方式，性能良好(Implementation of LDPC coding)
OFDM
- 使用matlab实现OFDM的基本功能 FFT的点数：512 载波数量：200 调制方式：16QAM 每个符号代表的比特数：4 每个子载波包含的符号数：12 信道条件：加性高斯白噪声信道（AWGNC） 循环前缀长度：148 循环后缀长度：20(matlab OFDM 16QAM FFT IFFT AWGNC)
2.9零均值高斯白噪声通过低通带通滤波器前后特性
- 用matlab仿真零均值高斯白噪声通过低通带通滤波器前后特性，程序完善，结果与理论值非常接近(The zero mean white Gauss noise is simulated by MATLAB, and the program is perfect through the low pass bandpass filter. The result is very close to the theoretical value.)
QPSK
- QPSK调制的matlab仿真，信道为高斯白噪声信道。(The MATLAB of QPSK modulation is simulated, and the channel is Gauss white noise channel.)