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digital-modulation-and-demodulation
数字调制解调信号ask fsk bpsk qpsk 16qam 64qam(digital modulation and demodulation )
- 2012-05-05 09:56:20下载
- 积分：1
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一种基于高阶累积量的数字调相信号识别方法
说明： 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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msk
说明： 利用锁相环来实现MSK信号的定时同步，采用的是gardner算法(Using phase-locked loop to achieve timing synchronization of MSK signal, Gardner algorithm is adopted.)
- 2021-04-07 20:19:01下载
- 积分：1
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bluetooth
电脑之间蓝牙的通信，相当于一个蓝牙工具吧。(Bluetooth communication between computers, the equivalent of a Bluetooth tool bar.)
- 2013-08-05 10:36:42下载
- 积分：1
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31175278moulationclassification
主要是实现调制识别，区分几种常用的数字调制信号。含有两个文件夹 其一为特征参数的仿真；其二为正确识别率的仿真。文件夹key feature simulink中：
运行程序会得到各特征参数之间区分图 从图中可看到特征参数的有效性，见图。
文件夹classification rate simulink中：运行main.m文件 可以得到正确识别率 见图。(It is mainly to realize modulation recognition and distinguish several commonly used digital modulation signals. The simulation of two folders is one of the characteristic parameters, and the second is the simulation of the correct recognition rate. In the folder key feature Simulink:
The running program will get the validity of the feature parameters that can be seen from the diagram, as shown in the diagram.
Folder classification rate Simulink: running the main.m file can get the correct recognition rate.)
- 2018-01-21 11:02:43下载
- 积分：1
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hpcn-rfcomm
high performance communication networks presentation
- 2012-03-17 17:39:01下载
- 积分：1
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OTM9605A_CPT5.0_MIPI
用于手机模组中显示屏上，用来点屏的初始化代码(On the display module for mobile phones used to point screen initialization code)
- 2021-02-21 14:39:43下载
- 积分：1
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asyncio
说明： Python异步IO模块源代码，众所周知Python由于全局锁的问题在多线程支持上存在弊病，通过异步可有效提升效率(Python asynchronous IO source code)
- 2020-02-09 00:43:57下载
- 积分：1
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Overcoming_IP_Address_Issues_with_GPRS_Remote_Mon
GPRS is a communication technology that allows data
acquisition systems to overcome the difficulty of cabling for
wide area remote sites. GPRS applications are becoming more
and more prevalent due to the ease with which they can be
implemented, but the dynamic IP address issues associated
with GPRS networking continue to frustrate system
integrators.
- 2011-10-18 04:27:27下载
- 积分：1
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N(0,1)
说明： 默认产生（0，1）的高斯随机数，参数可调(Gauss random number (0,1) is generated by default with adjustable parameters.)
- 2019-01-08 17:40:07下载
- 积分：1
