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dbpsk调制解调程序
SYMPCHUNK sets the number of symbols demodulated at once with a constant carrier frequency and symbol timing offset. This is a fundamental decoder parameter that establishes its carrier and symbol timing tracking bandwidth. Set it too low and the demodulator can"t accurately determine carrier frequency and symbol timing on a noisy signal. Set it too high and the demodulator may not be able to track large symbol rate offsets caused by Doppler shift and/or A/D or spacecraft clock errors. Or it might have trouble tracking high rates of change in the carrier frequency due to Doppler acceleration.The current value of SYMPCHUNK is 4*N1 = 512, where N1 = 128 is the order of the convolutional interleaver. 512 symbols is 512 milliseconds at 1000 symbols/sec, giving a frequency/time determination SNR that is 10*log10(512) = 27 dB greater than the Es/N0, not counti
- 2022-03-05 11:28:24下载
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13.2Kbps GSM手机语音压缩解压源代码(C语音)
13.2Kbps GSM手机语音压缩解压源代码(C语音)-13.2Kbps GSM handset pronunciation compression decompression
source code (C pronunciation)
- 2022-03-02 05:06:01下载
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NFS version 4 Protocol
NFS版本4协议
- 2022-07-10 23:25:07下载
- 积分:1
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Assignment of “Network Design and Traffic Engineering”
Assignment of “Network Design and Traffic Engineering”
- 2022-08-05 18:05:53下载
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A very essential module for ns2 to simulate MPLS using CR
A very essential module for ns2 to simulate MPLS using CR-LDP MNS 2.0
- 2022-05-20 21:38:41下载
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labview tcp文件传输
上传文件为基于labview 8.6版本的文件传输代码,分为两个文件,服务器和客户端,亲测可以用。注意运行的时候先开服务器再开客户端。
- 2023-05-10 22:50:03下载
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关于串口的串口通讯例程,希望能对大家有所帮助
关于串口的串口通讯例程,希望能对大家有所帮助-On the serial port of the serial communication routines, hoping to be helpful for everyone
- 2023-07-19 08:15:03下载
- 积分:1
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中国移动MMS规范,主要描述了中国移动彩信平台的结构概述,相信您读完对,整个彩信体系会有一定的了解...
中国移动MMS规范,主要描述了中国移动彩信平台的结构概述,相信您读完对,整个彩信体系会有一定的了解-China Mobile MMS norms, the main description of China Mobile MMS platform structure outlined, I believe you read right, MMS system as a whole will have a better understanding
- 2022-07-01 22:37:56下载
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- 2022-04-18 04:51:01下载
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visual development tools such as Visual C++, Delphi, C++ Builder and others all...
虽然Windows下可视化开发工具如VC、Delphi、C++ Builder等都有专用的定时器控件Timer,而且使用很方便,可以实现一定的定时功能,但最小计时精度仅为55ms,且定时器消息在多任务操作系统中的优先级很低,不能得到及时响应,往往不能满足实时控制环境下的应用。不过Microsoft公司在Win32 API函数库中已经为用户提供了一组用于高精度计时的底层函数,如果用户使用得当,计时精度可到1ms。这个计时精度、对于一般的实时系统控制完全可以满足要求。现将由C++ Builder 4.0提供的重新封装后的一组与时间相关的主要接口函数(函数名、参数、功能与Win32 API基本相同)说明如下:
-visual development tools such as Visual C++, Delphi, C++ Builder and others all have dedicated Timer timer control, but it is convenient. can achieve a timing function, but only the minimum time of 55 ms accuracy. Timer news and multi-task operating system in the low priority that is not to respond in a timely manner, often fail to meet the real-time control environment applications. However, Microsoft Corporation in the Win32 API function has been to provide the user with a group for high-precision the bottom was a time function, if the user is properly utilized, time accuracy can be a ms. Accuracy this time, and for most of the real-time control system can meet the requirements.
- 2022-02-11 22:11:49下载
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