Description: qpsk调制在awgn/rayleigh信道下的误码性能比较，以及信号的功率谱和星座图-QPSK modulation in awgn / Rayleigh Channel Performance Comparison of error, and the signal power spectrum and constellation Platform: |
Size: 5083 |
Author:徐鹏 |
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Description: 带瑞丽衰落信道高斯白噪声的QPSK调制解调信道，可以得到功率谱波形和星座图-with Ruili fading channel Gaussian white noise QPSK demodulator access that can be power spectrum waveform and constellation Platform: |
Size: 52531 |
Author:吕军红 |
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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: 125075 |
Author:刘涛 |
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Description: We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation,
phase-shift keying, and pulse amplitude modulation
communications systems.We study the performance of a standard
CFO estimate, which consists of first raising the received signal to
the Mth power, where M is an integer depending on the type and
size of the symbol constellation, and then applying the nonlinear
least squares (NLLS) estimation approach. At low signal-to noise
ratio (SNR), the NLLS method fails to provide an accurate CFO
estimate because of the presence of outliers. In this letter, we derive
an approximate closed-form expression for the outlier probability.
This enables us to predict the mean-square error (MSE) on CFO
estimation for all SNR values. For a given SNR, the new results
also give insight into the minimum number of samples required in
the CFO estimation procedure, in order to ensure that the MSE
on estimation is not significantly affected by the outliers. Platform: |
Size: 1265450 |
Author:吴大亨 |
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Description: qpsk调制在awgn/rayleigh信道下的误码性能比较，以及信号的功率谱和星座图-QPSK modulation in awgn/Rayleigh Channel Performance Comparison of error, and the signal power spectrum and constellation Platform: |
Size: 5120 |
Author:徐鹏 |
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Description: 带瑞丽衰落信道高斯白噪声的QPSK调制解调信道，可以得到功率谱波形和星座图-with Ruili fading channel Gaussian white noise QPSK demodulator access that can be power spectrum waveform and constellation Platform: |
Size: 52224 |
Author:吕军红 |
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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: We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation,
phase-shift keying, and pulse amplitude modulation
communications systems.We study the performance of a standard
CFO estimate, which consists of first raising the received signal to
the Mth power, where M is an integer depending on the type and
size of the symbol constellation, and then applying the nonlinear
least squares (NLLS) estimation approach. At low signal-to noise
ratio (SNR), the NLLS method fails to provide an accurate CFO
estimate because of the presence of outliers. In this letter, we derive
an approximate closed-form expression for the outlier probability.
This enables us to predict the mean-square error (MSE) on CFO
estimation for all SNR values. For a given SNR, the new results
also give insight into the minimum number of samples required in
the CFO estimation procedure, in order to ensure that the MSE
on estimation is not significantly affected by the outliers. Platform: |
Size: 1265664 |
Author:吴大亨 |
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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: 有关QPSK调制解调的仿真程序，包括基带输入波形及其功率谱、QPSK调制信号及其功率谱、AWGN信道输出及其功率谱、通过瑞利信道之前和之后的信号星座图
6)在高斯白噪声和瑞利衰落信道条件下的误码性能以及高斯白噪声的理论曲线，所有误码性能曲线在同一坐标比例下绘制-Relevant QPSK modulation and demodulation of the simulation program, including the baseband input waveform and its power spectrum, QPSK modulation signal and its power spectrum, AWGN channel output and its power spectrum, through the Rayleigh channel before and after the signal constellation of Figure 6) in high- Adams white noise and Rayleigh fading channel under the conditions of BER, as well as the theory of Gaussian white noise curve, all the BER performance curve in the same proportion of coordinates under the map Platform: |
Size: 41984 |
Author:Navy2008_CHINA |
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Description: 16QAM的matlab实现，以及计算机仿真，观察其波形，功率谱，误码率以及星座图-16QAM to achieve the matlab, as well as computer simulation, to observe the waveform, power spectrum, BER, and constellation diagram Platform: |
Size: 2048 |
Author:zhangwei |
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Description: 16QAM系统的调制,解调的仿真。作出星座图及调制，解调信号的波形，输出信号的功率谱，眼图及误码率曲线。-16QAM system, modulation, demodulation of the simulation. Make a constellation and the modulation, demodulation waveform, the output signal of the power spectrum, eye diagram and BER curves. Platform: |
Size: 2048 |
Author:potato |
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Description: qpsk的调制解程序 包括在两种信道下的功率谱和星座图-qpsk the modem program includes two channels of the power spectrum and constellation Platform: |
Size: 1024 |
Author:vicky |
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Description: matlab实现矩形脉冲和根升余弦脉冲的QPSK调制功率谱密度及不同信噪比信道下的星座图，直接运行main函数即可-Plot the power density spectrum of the transmitted signal (e.g., with the matlab function psd) with different pulse shapes. How is it affected if a root raised cosine pulse is chosen instead of a rectangular pulse shape?
Study the signal constellation in the receiver for various values of Eb/N0 for the AWGN channel. Platform: |
Size: 70656 |
Author:岚岚 |
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Description: qpsk源程序，有gui界面，很不错，包含误码率分析，频谱、功率谱分析，还有星座图-qpsk source, a gui interface, very good, including bit error rate analysis, spectrum, power spectrum analysis, as well as constellation Platform: |
Size: 145408 |
Author:catalyst |
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Description: 基于MATLAB的QPSK仿真（AWGN高斯信道和瑞利信道），包括系统框图、功率谱密度、星座图。另外还有一个当发生100个错误时的误码率，高斯信道和瑞利信道下仿真的误码率和误比特率与理论值对比。-MATLAB-based simulation of QPSK (AWGN Gaussian channel and Rayleigh channel), including system block diagram, the power spectral density, constellation diagrams. There is also a 100 error occurs when the bit error rate, and the Gaussian channel under Rayleigh channel simulation of BER and bit error rate compared with the theoretical value. Platform: |
Size: 15360 |
Author:高晗 |
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Description: dct precoded SLM method for PAPR reduction
High Peak to Average Power Ratio (PAPR) is still a
most important challenge in Orthogonal Frequency Division
Multiplexing (OFDM) system. In this paper, we propose a
Discrete Cosine Transform (DCT) precoding based SLM
technique for PAPR reduction in OFDM systems. This
technique is based on precoding the constellation symbols with
DCT precoder after the multiplication of phase rotation factor
and before the Inverse Fast Fourier Transform (IFFT) in
SLM-OFDM System. Platform: |
Size: 234496 |
Author:MAHESH |
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Description: 用改进的星座图扩展法降低OFDM信号峰均功率比-Improved constellation expansion method to reduce the OFDM signal peak to average power ratio Platform: |
Size: 232448 |
Author:杨玉成 |
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Description: Orthogonal Fwquency Division Multiplexing
(OFDM) and Discrete MultiTone (DMT) modulation
offer many advantages for digital data transmission and have been adopted for several important standards.
Their primary drawback is a high peak-toaverage
power ratio (PAR). Methods which introduce
compensation signals in unused channels, first developed by Gatherer and Polley, are among the more promising methods for reducing the PAR. However, these methods apply only to systems with unused channels or require the sacrifice of data rate for PAR reduction. We present a new method for PAR reduction using active (data-carrying) channels which dynamically moves outer constellation points, within margin-preserving constraints, to minimize the peak magnitude. This scheme simultaneously decreases the
bit error rate slightly while substantially reducing the peak magnitude simulations show peak reductions of slightly more than 6 dB.-Orthogonal Fwquency Division Multiplexing
(OFDM) and Discrete MultiTone (DMT) modulation
offer many advantages for digital data transmission and have been adopted for several important standards.
Their primary drawback is a high peak-toaverage
power ratio (PAR). Methods which introduce
compensation signals in unused channels, first developed by Gatherer and Polley, are among the more promising methods for reducing the PAR. However, these methods apply only to systems with unused channels or require the sacrifice of data rate for PAR reduction. We present a new method for PAR reduction using active (data-carrying) channels which dynamically moves outer constellation points, within margin-preserving constraints, to minimize the peak magnitude. This scheme simultaneously decreases the
bit error rate slightly while substantially reducing the peak magnitude simulations show peak reductions of slightly more than 6 dB. Platform: |
Size: 339968 |
Author:redami |
Hits:
Search - constellation power