Description: 高等通信原理16_QAM symbol sequence of 2000 symbols and plot the constellation-Advanced Communication Theory 16_QAM symbol sequence of 2,000 symbols and plot the constellation Platform: |
Size: 1024 |
Author:wuwen |
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Description: 本文介绍了QAM调制、解调和判决原理，讨论了QAM的误码率性能，并在SystemView下对QAM调制、解调系统进行了仿真，观察并分析了原始输入信号、调制信号、解调信号、星座图以及QAM信号的功率谱图。-QAM modulation, demodulation and sentencing principle, the QAM BER performance, and right under the SystemView QAM modulation, demodulation system for simulation, observation and analysis of the original input signal, signal modulation, demodulation signal constellation map and QAM signals in the power spectrum. Platform: |
Size: 124928 |
Author: |
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Description: 我编的用matlabe语言编的4psk调制解调的程序
可是解调后，恢复64点的星座图了，
-series of the language used matlabe 4psk series of the modulation and demodulation process demodulation However, restore 64 points of the constellation, Platform: |
Size: 1024 |
Author:陈伟 |
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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. Platform: |
Size: 491520 |
Author:叶双 |
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Description: 可实现QAM的星座图输出，仿真波形图输出，功率谱密度输出-Can be achieved QAM constellation diagram of the output, simulation waveform output, power spectral density output Platform: |
Size: 1024 |
Author:281405177 |
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Description: Abstract-The effect of the companding process on QAM signals
has been under investigation for the past several years. The
compander, included in the PCM telephone network to improve
voice performance, has an unusual affect on digital QAM data
signals which are transmitted over the same channel. The quantization
noise, generated by the companding process which is multiplicative
(and asymmetric), degrades the detectability performance
of the outermost points of the QAM constellation more
than that of the inner points.
The combined effect of the companding noise and the inherent
white gaussian noise of the system, leads us to a re-examination of
signal constellation design.
In this paper we investigate the detectability performance of a
number of candidates for signal constellations including, a typical
rectangular QAM constellation, the same constellation with the
addition of a smear-desmear operation, and two new improved
QAM constellation designs with two-dimensional warpi Platform: |
Size: 1076224 |
Author:雨笑了 |
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Description: 介绍了QAM调制的星座图，对于学习QAM调制的有一定的指导意义。-Introduction of the QAM modulation constellation diagram for QAM modulation of learning have a certain significance. Platform: |
Size: 241664 |
Author:林林 |
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Description: QAM Matlab程序，误码率的坐标，星座图等在图中已经显示出来-QAM Matlab procedure, the coordinates of BER, constellation diagram, etc. At chart has been displayed Platform: |
Size: 3072 |
Author:哈哈 |
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Description: 完成一个利用矩形信号星座图的M=16D的QAM通信系统的MonteCarlo的仿真-To complete a use of the rectangular signal constellation diagram of M = 16D of QAM communication system MonteCarlo Simulation Platform: |
Size: 1024 |
Author:欧米秋 |
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Description: it is a complete project on QAM based OFDM
in which the fourth file is the QAM constellation.-it is a complete project on QAM based OFDM
in which the fourth file is the QAM constellation. Platform: |
Size: 1024 |
Author:YASIR |
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Description: 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-band modulation, and then transferred to high-frequency channel in the channel by adding Gaussian white noise, the use of matched filter device demodulator, draw demodulation constellation, using the minimum Euclidean distance decoding decision, calculate bit error rate. Platform: |
Size: 107520 |
Author:zhaoyang |
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Description: MAQ-N with N in(1,2,3,4) modulation implementation code devlopped to simulate this numeric modulation with constellation and BRE (bit rate error) (french comments may be annoying ) whith a graphique interface to simulte sms transmission end reception with zeropading Platform: |
Size: 44032 |
Author:youness |
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