Description: 信号在信道进行传输时，经常会出现串扰，采用基于最大似然序列估计（MLSE）的电子色散均衡器的方法，克服光纤通信中的由各种色散引起的码间干扰。
研究基于最大似然序列估计（MLSE）的均衡器，采用维特比算法实现，用matlab仿真出采用MLSE后的性能指标（眼图和误码率）的提升。
-Signal transmission channel often occur crosstalk, based on the maximum likelihood sequence estimation (MLSE) electronic dispersion equalizer of the ways to overcome optical fiber communications in a variety of dispersion caused by the inter-symbol interference. Research based on the maximum likelihood sequence estimation (MLSE) of the equalizer, the Viterbi algorithm, a simulation using matlab after using MLSE performance indicators (eye diagram and bit error rate) of the upgrade. Platform: |
Size: 9216 |
Author:Lee |
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Description: 基于小波变换的PSK信号符号率估计的matlab程序-Based on Wavelet Transform PSK Symbol Rate Estimation signal matlab program Platform: |
Size: 1024 |
Author:郭晶 |
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Description: INTER-CARRIER INTERFERENCE CANCELLATION FOR OFDM SYSTEMS:
Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi-carrier modulation scheme, which has been adopted for several wireless standards such as IEEE 802.11a and HiperLAN2. A well-known problem of OFDM is its sensitivity to frequency offset between the transmitted and received carrier frequencies. This frequency offset introduces inter-carrier interference (ICI) in the OFDM symbol. This project investigates three methods for combating the effects of ICI: ICI self-cancellation (SC), maximum likelihood (ML) estimation, and extended Kalman filter (EKF) method. These three methods are compared in terms of bit error rate performance, bandwidth efficiency, and computational complexity. Through simulations, it is shown that the three techniques are effective in mitigating the effects of ICI. For high values of the frequency offset and for higher order modulation schemes, the ML and EKF methods perform better than the SC method. Platform: |
Size: 390144 |
Author:redami |
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Description: this a piby4DQPSK captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS-this is a piby4DQPSK captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS Platform: |
Size: 311296 |
Author:canbruce luwang |
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Description: this apiby8D8psk captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS-this is apiby8D8psk captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS Platform: |
Size: 311296 |
Author:canbruce luwang |
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Description: this a QAM64 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS-this is a QAM64 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS Platform: |
Size: 11264 |
Author:canbruce luwang |
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Description: this a qam128 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 MSPs and fc=5 MSPS-this is a qam128 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 MSPs and fc=5 MSPS Platform: |
Size: 307200 |
Author:canbruce luwang |
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Description: this a qam256 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS-this is a qam256 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS Platform: |
Size: 307200 |
Author:canbruce luwang |
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Description: this qam1024 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS-this is qam1024 captured signal for those who wants to check their algorithm for modulation classification and symbol rate estimation symbol rate used 1Mbps fs=20 or 40 MSPs and fc=5 MSPS Platform: |
Size: 295936 |
Author:canbruce luwang |
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Description: 经典的CPM信号的载波、符号率、调制指数联合盲估计的IEEE文章-Classic CPM signal carrier, symbol rate, modulation index of the IEEE Joint blind estimation of the article Platform: |
Size: 369664 |
Author:王威 |
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Description: 基于小波变换的PSK信号符号率估估计的matlab程序
-Estimated based on wavelet transform PSK signal symbol rate estimation matlab program Platform: |
Size: 1024 |
Author:qschh |
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Description: 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；
对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50 ，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）
改用HDB3码，画出前20个符号对应的波形
改用密勒码，画出前20个符号对应的波形
分别对上述1000个符号的波形进行功率谱估计，画出功率谱
改变信源“0”的概率，观察AMI码的功率谱变化情况-Have a length of 1000 random binary sequence, the probability of "0" is 0.8, and the probability of "1" is 0.2
Said data zeroing AMI coding, pulse width of 50 of the width of the symbol, the symbol rate of the waveform sampling rate of 8 times, to draw the first 20 symbols of the corresponding waveform (also given 20 source sequence)
HDB3 code switch, draw 20 symbols corresponding waveform
Switch to Miller code, draw 20 symbols corresponding waveform
The 1000 symbol waveform power spectrum estimation, draw power spectrum
The probability of "0" to change the source observed power spectrum of the AMI code changes Platform: |
Size: 2048 |
Author:Chang |
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Description: 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；
对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50 ，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）
改用HDB3码，画出前20个符号对应的波形
改用密勒码，画出前20个符号对应的波形
分别对上述1000个符号的波形进行功率谱估计，画出功率谱
改变信源“0”的概率，观察AMI码的功率谱变化情况-A length of 1000 random binary sequence, and " 0" with a probability of 0.8, " 1" with a probability of 0.2 the AMI code above zero, the pulse width of the symbol width of 50 , the waveform sampling rate Symbol rate 8 times, draw the top 20 of the waveform corresponding to the symbol (the first 20 and gives the source sequence) switch HDB3 code, the first 20 to draw a waveform corresponding to the symbol to switch Miller code, the first 20 symbols correspond to draw The waveforms of the symbol of the waveform 1000 power spectrum estimation, shown to change the source power spectrum " 0" , the probability of observation of the power spectrum of AMI code changes Platform: |
Size: 3072 |
Author:cjmbk |
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Description: 基于小波变换的码元速率估计，估计精度很高。还有测试信号和mpsk函数功能。-Symbol rate based on wavelet estimation, estimation accuracy is high. There are test signals and mpsk Function. Platform: |
Size: 2048 |
Author:李丹丹 |
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Description: 基于瞬时频率的码元速率估计，mpsk函数和test_signal函数都在基于小波变换压缩包内-Symbol rate estimation based on instantaneous frequency, qpsk function and test_signal functions in the compression package based on wavelet transform Platform: |
Size: 2048 |
Author:李丹丹 |
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Description: M次方谱估计可以同时估计psk信号的码元速率和载波频率。mpsk函数和test_signal在cwt压缩包内。-M th spectral estimation can estimate the symbol rate and carrier frequency qpsk signal. mpsk function and test_signal in cwt compressed package. Platform: |
Size: 2048 |
Author:李丹丹 |
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