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Description: 利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。
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Size: 491332 |
Author: 叶双 |
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Description: 利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。-Using Matlab simulation software, as shown in Figure 1 to complete a basic digital communications systems. Signal source such as arise over the distribution of 0,1 random signal, is mapped to 16QAM constellation diagram, at the same time all the way the signal has been divided into real and imaginary parts, behind the deal with the establishment of these two signals in the basis. Real part, imaginary part of the signal, respectively, after a square root raised cosine filter, then add white Gaussian noise, and then through the matched filter (square root raised cosine filter). Finally, after sampling, the verdict has been 0,1 signal, to compare with the original signal is given 16QAM digital system error.
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Size: 491520 |
Author: 叶双 |
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Description: 关于BPSK，QPSK，8QAM,16QAM，32QAM的调制解调程序。可作为单独模块加入到任何信道下，解调采用了两种方法。-On the BPSK, QPSK, 8QAM, 16QAM, 32QAM modulation demodulation process. As a separate module can be added to any channel, the demodulator uses two methods.
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Size: 3072 |
Author: 金鑫 |
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Description: 关于BPSK，QPSK，8QAM,16QAM，32QAM的调制解调程序。可作为单独模块加入到任何信道下，解调采用了两种方法。-On the BPSK, QPSK, 8QAM, 16QAM, 32QAM modulation demodulation process. As a separate module can be added to any channel, the demodulator uses two methods.
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Size: 1024 |
Author: water206 |
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Description: 关于BPSK，QPSK，8QAM,16QAM，32QAM的调制解调程序部分2。-On the BPSK, QPSK, 8QAM, 16QAM, 32QAM modulation and demodulation process of the part 2.
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Size: 1024 |
Author: water206 |
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Description: 关于BPSK，QPSK，8QAM,16QAM，32QAM的调制解调程序3。-On the BPSK, QPSK, 8QAM, 16QAM, 32QAM modulation and demodulation process of the 3.
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Size: 1024 |
Author: water206 |
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Description: 利用matlab仿真软件，实现8QAM调制。在实现时采用正交调幅的方式,某星座点在I坐标上的投影去调制同相载波的幅度,在Q坐标上的投影去调制正交载波的幅度,然后将2个调幅信号相加就是所需的调相信号。-Use of matlab simulation software to achieve 8QAM modulation. In achieving the adoption of quadrature amplitude modulation means of a constellation in the I coordinates of the projection to the modulation of the amplitude-phase carrier, in the Q coordinates of the projection to the range of carrier orthogonal modulation, and then the sum of two AM signals is the required phase modulation signal.
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Size: 1024 |
Author: yanyan |
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Description: 数字调制解调的MATLAB仿，包括4qam,8qam，16qam,64qam的调制和解调程序-Digital modem imitation of MATLAB, including 4qam, 8qam, 16qam, 64qam process of modulation and demodulation
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Size: 39936 |
Author: 李波 |
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Description: 在MATLAB环境中实现基于8QAM的信号调制解调-In the MATLAB environment 8QAM based on the signal modulation and demodulation
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Size: 1024 |
Author: eric |
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Description: QAM源代码，方便大家使用，谢谢分享，其实我也有点无奈-QAM source code, easy to use you, thank you sharing, in fact, I feel quite helpless
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Size: 1024 |
Author: zhang |
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Description: An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information. -An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information.
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Size: 11264 |
Author: Griffin Wright |
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Description: this a mfile for simulation 8-QAM and 16-QAM and 32-QAM .
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Size: 2048 |
Author: hamedvahedian |
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Description: 利用matlab求QAM的一个程序实例，很实用-To seek QAM by matlab
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Size: 1024 |
Author: 杨斌 |
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Description: 利用matlab仿真软件，实现8QAM调制。在实现时采用正交调幅的方式,某星座点在I坐标上的投影去调制同相相载波的幅度,在Q坐标上的投影去调制正交载波的幅度,然后将2个调幅信号相加就是所需的调相信号。 已通过测试。
-Matlab simulation software to achieve 8QAM modulation. Implemented using quadrature amplitude modulation, phase carrier amplitude modulated by a constellation point in the projection coordinates, projection amplitude modulated orthogonal carriers in the coordinates of Q, then the sum of two amplitude modulated signals the required phase modulation signal. Has been tested.
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Size: 1024 |
Author: 清醒 |
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Description: 8QAM simulation on matlab, work
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Size: 1024 |
Author: julian |
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Description: 通信系统中的信号调制与解调技术，对信号比特流进行8QAM信号调制与解调的matlab仿真。-Communication system signal modulation and demodulation techniques for signal simulation matlab 8QAM bitstream signal modulation and demodulation.
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Size: 1024 |
Author: cong |
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Description: 【matlab编程代做】8QAM通过AWGNchannel后的误码率 -[do] 8QAM matlab programming generation through the error rate after AWGNchannel
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Size: 113664 |
Author: 张涛 |
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Description: 实现两个通信建模的仿真，分别是8-QAM和QPSK.-1. Simulate the error performance (BER-EbNo curve) of a QPSK system (without coding) using Quasi-analytical method, under AWGN channel.
2. Simulate the error performance (BER-EbNo curve) of an 8-QAM system (without coding) using the built-in Matlab channel function rayleighchan .
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Size: 2048 |
Author: jack |
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Description: 本文在matlab环境下构建了4PAM和8QAM在加性高斯白噪声信道传输的系统模型，通过matlab程序仿真，研究 不同调制方式对信号的误比特性能比较。(additive white Gaussian noise)
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Size: 10240 |
Author: 刘梦莹
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Description: QAM编程 自适应QAM必须的程序段，相信我，没错的，哈哈哈哈哈哈。(qam english ha he hello hi how are you i am fine thank you and you da ming tofu koungfu)
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Size: 9216 |
Author: iermeng |
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