一个封装很好的串口类。是基于MFC的 。想编写rs 232串口编程，可应用此类。...

远程数据传输的研究, 远程数据传输的研究-Study of remote data transmission, remote data transmission research

随着市场竞争的日益激烈，各个企业都想尽办法完善对客户的服务，电话客户服务便是企业推出的一项举措，通过电话与客户联系业务，为客户解答问题，但是在客户过多的情况下，难免出现问题，为了避免这种情况的发生，需要对所有的客户电话都录音，通过录音可以更好的了解客户的需求，也可以避免员工在工作中出现差错。-With the increasingly fierce market competition, all companies have tried every means to improve customer service, telephone customer service is the company launched an initiative on the phone with customer contact business, to answer questions for customers, but the customer too much circumstances, the inevitable problems, in order to avoid this from happening, the need for all customers calls are recorded through the recording could be a better understanding of customer needs, but also employees in their work to avoid errors.

是一个比较简单基础的socket(delphi)通信程序,供大家参考-is a relatively simple based on the socket (delphi) Communication Program, for your reference

USB接口，CH375芯片读写U盘的部分程序段。 检测U盘是否正常工作。-USB interface chip CH375 U disk read and write the part of the process. Detection U-normal work.

程控滤波器论文。实现了步进为10dB的0到60dB的可调增益。滤波器部分以可编程开关电容滤波器MAX262芯片为核心，实现了截止频率1KHZ-20KHZ步进1HZ可调的程控滤波器，各项误差低于5％。-Program-controlled filter papers. To realize a step from 0 to 60dB in 10dB of adjustable gain. Filter part of programmable switched capacitor filter MAX262 chip as the core, realize the cut-off frequency 1Hz step 1KHZ-20KHZ program adjustable filter, the error of less than 5.

中软泰和融合通信平台白皮书-converged communications platform White Paper

一个很不错的WIFI程序,可运行,保质量-a very good WIFI procedures, operational, and ensuring quality

RS485通信协议 ，主要讲述通信的原理，希望对大家有所帮助-thank you very much

云台解码器派尔高D协议，已经包含所有命令，想对来说一般都能看的懂，无特别之处，此版本非变异版本，属于原版！-PTZ decoder Pelco D protocol, already contains all the orders, would like to look for the knowledge generally available and no special feature of this version of non-variant version, belongs to the original!

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。