利用随机数生成函数生成基带序列码,实现ASK键控!
上传时间: 2013-12-27
上传用户:jqy_china
现有数字信号自动调制识别方法大多只适用于无记忆信号,如PSK、ASK、FSK信号等。将有记忆 信号(MSK信号)和无记忆信号一起考虑,提出了一种改进的数字信号自动识别方法。该方法采用信号的瞬时统 计量作为特征参数,采用多层神经网络作为分类器。计算机仿真表明:当噪声采用高斯白噪声,并且信噪比大于 l5 dB时,识别率高于96% ;当信噪比不低于l0 dB时,识别率不低于90%。
上传时间: 2014-01-13
上传用户:wangchong
使用matlab编程,比较全面的编写了数字调制的qpsk,ook,fsk,epsk,bpsk,ASK过程。
上传时间: 2014-11-30
上传用户:z754970244
本系统以51单片机为控制核心,由正弦信号发生模块、功率放大模块、调幅(AM)、调频(FM)模块、数字键控(ASK,PSK)模块以及测试信号发生模块组成。采用数控的方法控制DDS芯片AD9850产生0Hz-30MHz正弦信号,经滤波、放大和功放模块放大至6v并具有一定的驱动能力。测试信号发生模块产生的1kHz正弦信号经过调幅(AM)模块、调频(FM)模块,对高频载波进行调幅或调频。二进制基带序列信号送入数字键控模块,产生二进制PSK或ASK信号,同时对ASK信号进行解调,恢复出原始数字序列。 另外,本系统从简单、调整方便、功能完备为出发点,基本实现了设计中的要求,波形输出较稳定,且精度较高。本设计还配备有LED显示屏、键盘,提供了友好的人机交互界面。
上传时间: 2017-01-04
上传用户:hewenzhi
这些可以实现信号调制,比如fsk,bpsk,ASK,eqpsk,ook等,并画出相应的时域和频域波形,非常实用的源码。
标签: 信号调制
上传时间: 2013-12-28
上传用户:qazxsw
isual Chat 1.91 Developer Edition - Customize the Visual Chat code regarding your own requirements - Use customchatdev.html for developing / testing - Create .jar and .cab-files containing client-specific .class-files and the images-folder (use zip and cabarc compressing tools) - Adapt the customchat.html file - Upload all the files to your webserver - Start the ChatServer by invoking java at.ac.uni_linz.tk.vchat.ChatServer [port [server-key]] from your commandline - I kindly ASK you to leave copyright and credit information in the InfoPanel.class as it is - but you are invited to add your own text. In case of violations I will consider excluding this class from the source in the future.
标签: Chat requirement Developer Customize
上传时间: 2017-01-27
上传用户:iswlkje
XTHIDE is a GUI that allows the user to hide a text message in an image file. The user will be ASKed for a key that will be used to both encode and decode the text into an image. The key can be of length from 2 to 900 characters. The encryption pattern for a key hell is not a subset of the encryption pattern for hello . See help. Created with version 7.01.
标签: user message XTHIDE allows
上传时间: 2013-12-26
上传用户:erkuizhang
Matlab代码实现了一个调制的GUI界面,同时实现了ASK, OOK, BPSK, QPSK, 8PSK调制算法的源代码。以图像形式展示了各种调制算法的实际运行结果。
上传时间: 2013-12-17
上传用户:古谷仁美
用matlab7·0软件对通信信号进行调制simulink仿真,它包括am,pm,fm,ASK,psk.rar
上传时间: 2014-01-21
上传用户:youlongjian0
Your application should never assign a seat that has already been assigned. When the economy section is full, your application should ASK the person if it is acceptable to be placed in the first-class section (and vice versa). If yes, make the appropriate seat assignment.
标签: application assigned already economy
上传时间: 2014-10-25
上传用户:zhichenglu