MSComm 控件通过串行端口传输和接收数据，为应用程序提供串行通讯功能。MSComm控件在串口编程时非常方便，程序员不必去花时间去了解较为复杂的API函数，而且在VC、VB、Delphi等语言中均可使用。 Microsoft communications Control（以下简称MSComm）是Microsoft公司提供的简化Windows下串行通信编程的ActiveX控件，它为应用程序提供了通过串行接口收发数据的简便方法。具体的来说，它提供了两种处理通信问题的方法：一是事件驱动(Event－driven)方法，一是查询法。
上传时间： 2015-11-14
上传用户：tianyi223
参考网上的提供的代码,我把uCosII移植到MSP430f149上,分三个任务,分别是485通讯,键盘扫描,LED显示,可供参考!- Refers to code which on-line provides, I transplant uCosII to MSP430f149 on, divides three duties, respectively is 485 communications, scanning, LED demonstrated
标签： on-line uCosII Refers which
上传时间： 2013-12-11
上传用户：xieguodong1234
Author: wei liu Summary: simulation of binary and non-binary bch decoder MATLAB Release: R14SP1 Required Products: communications Toolbox Description: simulation of binary bch decoding algorithm for bch(n, k) with t bits error correction capability.
标签： simulation non-binary Summary Release
上传时间： 2014-01-10
上传用户：frank1234
IT++ is a C++ library of mathematical, signal processing and communication system routines/functions. Its main use is in simulation of communication systems or for performing research in the area of communications.
标签： communication mathematical processing functions
上传时间： 2014-01-13
上传用户：han_zh
This book is concerned with the description and analysis of the global second generation (2G) mobile radio systems: the Global System of Mobile communications (GSM) and cdmaOne. A subsidiary goal is to examine how these two systems will evolve into third generation (3G) ones with their requirement to support multimedia mobile radio communications.
标签： description generation concerned the
上传时间： 2014-01-14
上传用户：2467478207
We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.
标签： frequency-offset estimation quadrature amplitude
上传时间： 2014-01-22
上传用户：牛布牛
This paper investigates the design of joint frequency offset and carrier phase estimation of a multi-frequency time division multiple access (MF-TDMA) demodulator that is applied to a digital video broadcasting—return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based on the interpolation technique for two correlation values in the frequency and phase domains. This simple interpolation technique can significantly improve frequency and phase resolution capabilities of the proposed technique without increasing the number of the correlation values. In addition, the overall block diagram of a digital communications receiver for DVB-RCS is presented, which was designed using the proposed estimation algorithms. Index Terms—Carrier phase estimation, DVB-RCS, frequency offset estimation, interpolation, joint estimation, MF-TDMA.
标签： investigates estimation frequency carrier
上传时间： 2015-12-30
上传用户：ls530720646
With this foundation, you explore a development model that addresses the complete range of issues in the design of embedded communications software, including real-time operating systems, hardware and software partitioning, layering, and protocol stacks.
标签： development foundation addresses complete
上传时间： 2016-01-16
上传用户：zyt
自己编程实现多引导 如果你是一个计算机用户相信你一定安装过操作系统，当你用久了一个操作系统，你可能会安装一个新的操作系统，但你往往希望保留现在的操作系统。比如当你有了一个windows98，你可以在上面再安装windows2K或是windowsXP，这是因为Windows的NTloader可以认识比自己更早的操作系统，所以能够给你保留先前的操作系统。但是如果你现在已经拥有了一个windows2K或是windowsXP你要在硬盘上再装个WINDOWS98甚至一些怀旧派人士想在上面安装一个DOS6.22，此时又该怎么办呢？你往往会用到第三方软件，比如V communications，.inc的System Commander系列，PowerQuest Corporration的BootMagic等等都是很好的选择。这些软件的将硬盘分区设置为两个或是两个以上的主分区，（也就是我们所说的双“C”盘，或是多“C”盘），把不同的操作系统安装到不同的主分区，通过激活不同的分区来实现多重引导，其优点是安全稳定，一旦一个操作系统瘫痪，一点不影响其他操作系统，个人认为值得推荐。 本文不是一篇多操作系统实现的经验介绍，因此有关BootMagic等第三方软件的使用我就不再浪费篇幅来介绍，我要给大家分析的是此类软件的实现原理。
上传时间： 2014-01-26
上传用户：change0329
用Visual C++6.0编程工具，使用Microsoft communications Control控件（MSComm控件）进行串行通信程序的开发。
上传时间： 2014-01-05
上传用户：hullow
