TCP通讯测试小程序（客户端），可选择保持连接或一次收发完毕后自动断开。...

此程序为非二进制LDPC 码的仿真程序. 信道为AWGN, 调制方式 是BPSK.-This program is used to simulation nonbinary LDPC codes over AWGN channel and BPSK modulation. The decoding algorithm is in the probability domain and with the fast Hadamard transform in the check node.

RFC3022：传统IP网络地址转换器（传统NAT）

原模图分析译码门限值时，传统的EXIT不能用，所以采用pexit图，是原模图分析的最重要的工具。文中提出了一种新的外部信息转移分析方法，主要针对基于原模图和多边形的LDPC码 ，进一步介绍了边连接的限制，对于这一类的许多类型的码字，传统的EXIT图分析方法不能应用，文中提出的PEXIT图考虑了边的连接，允许对基于原模图的LDPC码的译码收敛估计，允许设计高结构化的接近容量的LDPC码

自己用VB写的串口调试程序，对于单片机之类的调试非常好用，自己感觉比网上能下到的那些好用-Its own serial port using VB to write a debugger for debugging single-chip microcomputer, such as very easy to use, their own feelings than the bottom line of those who can use

两天线的通信系统，包括空时码的编解码程序，以及与HARQ结合的传输方案代码，信道为准静止的瑞丽衰落信道-Line a two-day communications systems, including space-time code codec procedures, as well as combined with the HARQ transmission program code, channel, whichever is Ruili static fading channel

WAP2.0UAProfile收集，可以为WAP编程、测试、应用提供参考，有重要的参考价值-collection of WAP2.0UAProfile, good reference for WAP codeing,testing and applicaton,valuble material.

可靠性和有效性是数字通信系统的两大性能指标。然而,在数字通信系统中,二者往往是一对矛盾,在频带资源日益紧张的当代,如何在保证一定通信可靠性的前提下尽可能提高有效性是通信领域永恒的主题。在光通信系统中,接收机在进行相位恢复时必须设法克服相位模糊问题,为此,常常采用差分调制(DQPSK)。然而,差分调制会导致信号误码率加倍,产生额外的信噪比代价。本文分析了迭代差分解调译码方案,即将LDPC编码和差分调制作为整体进行优化。仿真结果表明,该方案既可以克服相位模糊又能补偿差分代价,增强了系统的可靠性。同时,本文分析了适合该方案的LDPC码的度优化算法和满足任意度分布的校验矩阵的构造方法。在无线通信系统中,无线信道的衰落特性严重影响通信传输的有效性与可靠性。分集技术是一种典型的抗衰落技术,本文研究了联合编码调制分集技术,对该技术的两个关键因素：多维旋转调制和分量交织器的设计进行了重点研究,使得该技术更好地将信道编码增益与时间、频率、空间和调制分集相结合,使系统达到很高的频谱效率,有效地抵抗衰落信道下的各种干扰,增强了整个通信系统的有效性与可靠性。

采用dsp汇编编写的RS485通信程序，非常简单实用-using dsp compilation prepared by the RS485 communication procedures, a very simple and practical

cmmb RS 编码-cmmb rs encoder

Digital electronics is one of the fundamental courses found in all electrical engineering and most science programs. The great variety of LabVIEW Boolean and numeric controls/indicators, together with the wealth of programming structures and functions, make LabVIEW an excellent tool to visualize and demonstrate many of the fundamental concepts of digital electronics. The inherent modularity of LabVIEW is exploited in the same way that complex digital integrated circuits are built from circuits of less complexity, which in turn are built from fundamental gates. This manual is designed as a teaching resource to be used in the classroom as demonstrations, in tutorial sessions as collaborative studies, or in the laboratory as interactive exercises.