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一种基于高阶累积量的数字调相信号识别方法
对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)
- 2020-06-21 09:40:02下载
- 积分：1
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entropy
for entropy
H = entropy(S)
this command will evaluate the entropy of S, S should be row matrix
H = entropy([X Y Z])
this command will find the joint entropy for the 3 variables
H = entropy([X,Y],[Z,W])
this will find H(X,Y/Z,W).. you can use it for any combination of joint entropies
Please validate this function before using it
- 2009-05-22 03:49:16下载
- 积分：1
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ns2-extension
介绍如何对NS2进行多信道多接口扩展，并支持动态信道分配。(NS2 introduce how to carry out the expansion of multi-channel multi-interface, and supports dynamic channel allocation.)
- 2009-03-12 20:28:24下载
- 积分：1
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mise-0.1
类似simulink的小程序，在网上找到的，希望对大家有用。。(Similar simulink small program, found on the Internet, we want to be useful. .)
- 2014-05-04 14:54:23下载
- 积分：1
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UnderthePCintheWindows95andsingle-chipserialcommun
在Windows95下PC机和单片机的串行通信。
基于32位操作系统Windows95的工业控制PC机和单片机间的串行通信，给出了用VC＋＋5．0和PL／M－96语言编写的串行通信程序(Under the PC in the Windows95 and single-chip serial communication. 32-bit operating system based on the Windows95 machine and industrial control PC serial communication between the single-chip, is given by VC++5.0 and PL/M-96 language serial communication program)
- 2009-05-31 15:11:53下载
- 积分：1
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时频分析
说明： 截获接收机采用时频分析进行跳频通信的参数估计程序(Intercepting the parameter estimation procedure of the receiver for time-frequency analysis for frequency hopping communication)
- 2019-04-20 14:19:54下载
- 积分：1
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Si100x_SPI0_Slave
HLP A+ Modbus 标准通讯协议格式，上位机发送数据格式，正确时变频器返回数据格式(This bit will be set to logic 1 when the receive buffer has been read and contains no
new information. If there is new information available in the receive buffer that has
not been read, this bit will return to logic 0. RXBMT = 1 when in Master Mode.)
- 2013-11-15 11:31:43下载
- 积分：1
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ldpc-code-final-test
用于LDPC编码译码的仿真实现。包括随机生成校验矩阵、由校验矩阵产生生成矩阵、编码、加随机噪声、译码等内容。(For LDPC codec simulation. Including randomly generated check matrix, generated by the parity check matrix generator matrix, coding, plus random noise, such as decoding.)
- 2013-05-06 12:02:38下载
- 积分：1
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数字调制信号：4FSK，2PSK
说明： 基于matlab平台，产生4FSK,2PSK数字信号(Generate 4FSK, 2PSK digital signal based on MATLAB platform)
- 2020-02-22 11:45:57下载
- 积分：1
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OPNET_tutorial_for_Chinese
OPNET软件自带的General Tutorial中文译版，学习OPNET非常实用!(OPNET software s own version of Chinese Translation General Tutorial, learning OPNET very useful!)
- 2021-04-13 09:38:56下载
- 积分：1
