MSComm 控件通過串行端口傳輸和接收數(shù)據(jù)，為應(yīng)用程序提供串行通訊功能。MSComm控件在串口編程時非常方便，程序員不必去花時間去了解較為復(fù)雜的API函數(shù)，而且在VC、VB、Delphi等語言中均可使用。 Microsoft COMMUNICATIONs Control（以下簡稱MSComm）是Microsoft公司提供的簡化Windows下串行通信編程的ActiveX控件，它為應(yīng)用程序提供了通過串行接口收發(fā)數(shù)據(jù)的簡便方法。具體的來說，它提供了兩種處理通信問題的方法：一是事件驅(qū)動(Event－driven)方法，一是查詢法。
參考網(wǎng)上的提供的代碼,我把uCosII移植到MSP430f149上,分三個任務(wù),分別是485通訊,鍵盤掃描,LED顯示,可供參考!- Refers to code which on-line provides, I transplant uCosII to MSP430f149 on, divides three duties, respectively is 485 COMMUNICATIONs, scanning, LED demonstrated
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.
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.
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.
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.
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.
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.
