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经PPM调制的超宽带信号经高斯白噪声信道的系统仿真,给出了时域和频域图-After the PPM modulation ultra-wide band signal after the Gauss white noise channel system simulation,and give the time domain and the frequency range chart!
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单用户多载波时频域联合cdma扩频的仿真，使用类编程。包含发送，信道，接收3个类。有联合扩频，调制，FFT变换，高斯信道和瑞利，解调，解扩，统计误码率等功能，减小仿真点数可使程序运行更快。,Single-user multi-carrier cdma joint time-frequency domain spread spectrum simulation, the use of programming. Send contain, channel, receiving three categ
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采用GSM系统的GMSK调制方式，并画出出时频域图，计算BER，有利于了解GSM系统的调制解调。-Frequency domain using the GSM system GMSK modulation and draw the diagram, calculate the BER beneficial for GSM modem.
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各种模拟调制和数字调制的波形和频谱图，对初学者很有帮助-A variety of analog modulation and digital modulation waveform and frequency spectrum
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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,
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使用QPSK调制的正交频分复用（OFDM）系统的Simulink仿真 OFDM Implementation using QPSK Modulation -Use of QPSK modulation, orthogonal frequency division multiplexing (OFDM) systems Simulink simulation OFDM Implementation using QPSK, the Modulation
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WB_BPSK_Analysis.rar:BPSK modulation and link analysis of UWB monocycle and doublet waveforms.Revised 1/2/05-JC.This m file plots the time and frequency waveforms for BPSK 1st and 2nd derivative equations used in UWB system analysis. -WB_BPSK_Analysi
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用matlab对基带数字系统进行仿真。整个系统描述了信号的发送和调制过程。其中调制采用16QAM，并且采用基带传输，不必调制到载频上。系统总采用了高斯信道，在接受端采用解调并与发送型号进行比较得到误码率。-Using matlab to base-band digital system simulation. Describes the overall system signal to send and modulation process. Which modulation using 16Q
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这些可以实现信号调制，比如fsk，bpsk，ask，eqpsk，ook等，并画出相应的时域和频域波形，非常实用的源码。-These can be achieved signal modulation, such as fsk, bpsk, ask, eqpsk, ook, etc., and draw the appropriate time and frequency domain waveforms, a very useful source.
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gmsk modulation of numerical data generated by a random source, the output of the modulator give two signals, the first is gmsk signal and the other is gaussien frequency pulse shape
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OFDM整个系统结构，包括上下变频，多普勒频移，以及星座图调制和系统参数计算。-OFDM structure of the entire system, including upper and lower frequency, Doppler frequency shift, as well as the modulation constellation diagram and system parameters.
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一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模
块，并统括系统性能的仿真验证了系统设计的可靠性。
-A relatively complete simulation of the OFDM communication system design, including coding, modulation, IFFT, frequency up and down, Gaussian channel
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fm=input( Enter the message signal frequency fm= )
fc=input( Enter the carrier frequency fc= )
Am=input( Enter the message signal amplitude Am= )
Ac=input( Enter the carrier signal frequency Ac= )
n=input( Enter the no of DFT points: )
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pi/4-qdpsk调制解调程序，能有效地进行差分解调和鉴频器解调，在一些不易提取载波的场合很有用。因此，利用仿真来研究系统是必要的。-pi/4-qdpsk modulation and demodulation process, can effectively reconcile the difference solution frequency discriminator demodulation, carrier extraction in a number of difficult si
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MIMO Othogonal Frequency Division Modulation
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实现2M数据速率的GMSK调制，时钟频率20M，2分频后作为移位寄存器-2M data rate to achieve the GMSK modulation, the clock frequency of 20M, 2 minutes after a shift register frequency
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FSK调制解调 通过有扰信道 输出滤噪声 频率谱密度估计-FSK modulation and demodulation are disturbed by the noise channel output filter frequency spectral density estimation
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通过伪随机序列进行频率调制，并对相位连续性进行优化。调制信号的自相关函数可以通过谱修正进行旁瓣抑制(Frequency modulation is performed by pseudo-random sequence and phase continuity is optimized. The autocorrelation function of modulation signals can be sidelobe suppressed by spectral correction)
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匹配滤波，对线性调频信号进行匹配滤波处理，可以得到目标的特征信息(The matching filter is used to match the linear frequency modulation signal to obtain the characteristic information of the target.)
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matlab实现幅度调制解调、频率调制与判决解调(Realization of amplitude modulation and demodulation, frequency modulation and decision demodulation by MATLAB)
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