此程序给出了信号的PM调制的与解调的仿真过程，并分析了在不同信噪比条件下解调的性能
This program presents the simulation process of PM modulation and demodulation of signals, and analyzes the performance of demodulation under different signal-to-noise ratio conditions (2023-05-04, matlab, 1KB, 下载1次)
对输入信号进行量化，n为你想要的量化级数；可输出量化前后信噪比，量化后信号，和量化后的二进制序列
Quantize the input signal, n is the quantizing series you want; output the signal-to-noise ratio before and after quantizing, the quantized signal, and the quantized binary sequence (2020-06-23, matlab, 691KB, 下载5次)
介绍数字通信系统分析和设计基础的基本原理
研究数字形式的信息从信源到一个或多个目的地的传输问题。
This paper introduces the basic principle of analysis and design of digital communication system
This paper studies the transmission of digital information from source to one or more destinations. (2020-05-11, matlab, 17978KB, 下载2次)
6. 在三条径的瑞利信道中，对于OFDM：
(1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。
(2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。
6. In the three-path Rayleigh channel, for OFDM:
(1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn.
(2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability.
(3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error. (2019-01-15, matlab, 311KB, 下载24次)
5. 在三条径的瑞利信道中，对于直接序列扩频：
(1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。
(2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。
5. In three-path Rayleigh channel, for direct sequence spread spectrum:
(1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate.
(2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve.
(3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve. (2019-01-15, matlab, 3471KB, 下载19次)
此matlab程序给出了调频调制（FM调制）与解调的仿真过程，并分析比较了在不同信噪比条件下调制与解调的性能
This MATLAB program gives the simulation process of FM modulation and demodulation, and analyzes and compares the performance of modulation and demodulation under different signal-to-noise ratios (2018-11-25, matlab, 1KB, 下载1次)
程序是在不同信噪比情况下两跳协作通信系统分别采用AAF和DAF协议时接收端的误码率仿真主函数twohop.m以及一些子函数,假设信道时瑞利信道。S_R\R_D\S_D的传输距离是1米，调制方式是BPSK，信噪比在-15dB-15dB,接收端合并方式为ERC,迭代次数为1000
The program simulates the BER of the main function twohop. m and some sub-functions at the receiver when the two-hop cooperative communication systems adopt AAF and DAF protocols respectively under different signal-to-noise ratios, assuming the Rayleigh channel. The transmission distance of S_RRDS_D is 1 m, the modulation mode is BPSK, the signal-to-noise ratio is -15 dB-15 dB, the receiver combination mode is ERC, and the number of iterations is 1000. (2018-08-12, matlab, 17KB, 下载5次)
信息论中实现信息的香农编码功能，求得信源熵，平均码长，信息率，编码效率
In information theory, the Shannon coding function of information is achieved, and the source entropy, average code length, information rate and coding efficiency are obtained. (2018-05-15, matlab, 1KB, 下载1次)
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 analog modulation mode is ASK. The channel is multipath (2 paths in simulation), and the noise in the channel is additive Gauss white noise. Coherent demodulation reception. Draw the relationship between the output curve of the regulator and the signal to noise ratio (SNR). (2017-10-09, matlab, 3KB, 下载6次)
最小均方误差等算法的MSE的计算,直线阵采用切比学夫加权控制主旁瓣比，包括调制，解调，信噪比计算。
Minimum mean square error MSE calculation algorithm, Linear array using cut than learning laid upon the right control of the main sidelobe ratio, Includes the modulation, demodulation, signal to noise ratio calculation. (2016-11-15, matlab, 5KB, 下载1次)
QPSK的编译 设定噪声为高斯白噪声，对2ASK、2FSK、2PSK、2DPSK等各种调制方式及相应的主要解调方式下（分相干与非相干）的误码率进行统计，并与理论值进行比较，以图形方式表示误码率与信噪比间的关系。
QPSK compiled Set the noise is Gaussian white noise, right 2ASK, 2FSK, 2PSK, 2DPSK variety of modulation and demodulation mode corresponding to the main (sub-coherent and non-coherent) error rate statistics, and with the theoretical value comparison, a graphical representation of bit error rate and SNR relationships. (2013-07-02, matlab, 164KB, 下载47次)
已调信号经过AWGN信道，解调器输入信噪比为100，绘制加性噪声后的接受信号时间波形，频谱，解调信号的时域波形。
Modulated signal through the input SNR AWGN channel, a demodulator 100, drawing the acceptance signal after the time waveform of additive noise, the spectrum, the demodulated signal of the time domain waveform. (2012-11-04, matlab, 1KB, 下载5次)
4PAM的matlab实现，采用AWGN信道环境，在一定的信噪比基础上进行误比特率仿真
4PAM the matlab realize, AWGN channel environment, the signal-to-noise ratio on the basis of bit error rate simulations (2012-10-16, matlab, 19KB, 下载173次)
本文主要是利用MATLAB7.0来实现2FSK 数字调制系统解调器的设计。该设计模块包含信源调制、发送滤波器模块、信道、接受滤波器模块、解调以及信宿，并未各个模块进行相应的参数设置。在此基础上熟悉MATLAB的功能及操作，最后通过观察仿真图形进行波形分析及系统的性能评价。
This paper is to use the MATLAB7.0 to demodulator design 2FSK digital modulation system. The design module contains the source modulation, the transmit filter module, channel, receive filter module, demodulation and sink, each module does not make the appropriate parameter settings. On this basis, familiar with the MATLAB functions and operations, and finally by observing the simulation graphical waveform analysis and system performance evaluation. (2012-08-17, matlab, 361KB, 下载7次)
B_Q_Q16_AWGN.rar是BPSK,QPSK,16QAM在高斯信道下的系统性能仿真，给出了信噪比SNR与误比特率BER 的关系。
16QAM是16进制的正交振幅调制在高斯信道和瑞利信道下的信噪比SNR与误比特率BER 的关系。都是matlab编写的
B_Q_Q16_AWGN.rar BPSK, QPSK, 16QAM in AWGN channel system performance simulation, given the relationship between the SNR and bit error rate (BER). 16QAM is the relationship between the 16-ary quadrature amplitude modulation signal to noise ratio SNR in the Gaussian channel and Rayleigh channel and the bit error rate (BER). Matlab prepared (2012-08-03, matlab, 15KB, 下载81次)
ofdm系统的matlab仿真程序，包括ofdm系统的整个课题仿真的程序，，其中OFDM功能包括“信源”、“信号处理与调制”和“解调与信号处理”三部分。
ofdm matlab simulation procedures, including the whole issue of ofdm system simulation program, OFDM features include a " source" , signal processing and modulation and demodulation and signal processing of three parts. (2012-07-18, matlab, 1KB, 下载3次)
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 and ber analysis.
(2011-12-07, matlab, 75KB, 下载16次)
3GPP中通用的信道模型，链路模型，天线模型及链路损耗的计算都有，可用来计算信噪比
3GPP in a common channel models, link model, antenna model and link-loss calculation of both can be used to calculate signal to noise ratio (2010-01-26, matlab, 218KB, 下载48次)
一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线
A guided night-aided channel estimation methods, using Simulink simulation, surveying BPSK BER performance, drawn-bit signal to noise ratio and bit error rate curve (2009-01-09, matlab, 7KB, 下载88次)
WCDMA的仿真程序,分别用C和MATLAB两种语言仿真
WCDMA simulation program, were used C language and MATLAB simulation (2006-12-24, matlab, 1761KB, 下载652次)