检查串口是否联有modem

为什么需要XP,敏捷过程是软工发展的必然及最新成果,xp重要概念,12个重要惯例和规则,XP的实施过程.-Why do we need XP, agile process is soft for the inevitable development and the latest results, xp important concepts, 12 important practices and rules and regulations, XP in the process.

Matlab盲信号分离很有用的工具，是做信号分离的好帮手-Blind Signal Separation Matlab useful tool to do a good helper signal separation

微软亚洲研究院论文：自组DS-CDMA网络中的扩散码分配-Microsoft Asia Research Institute thesis : Since the group DS-CDMA network distribution of the proliferation of Codes

EXCEL的安装、配置、编程接口等全工程的帮助文档，EXCEL是美国的交换机，但在中国的电信业用的很多，而且EXCEL不免费提供文档，不信你到别处-EXCEL installation, configuration, programming interface, such as the entire project to help document, EXCEL switch the United States, but in China s telecom industry with many, but not provided free of charge EXCEL documents, do not believe you go to somewhere else

MATLAB下UWB仿真的信道模型,内有注释见TITLE-MATLAB simulation of UWB channel model, see the Notes within TITLE

仿真载频为2GHz，带宽1MHz，子载波数128个，cp为16，子载波间隔为7.8125kHz 一个ofdm符号长度为128us，cp长度为16us，采用16QAM调制方式，最大doppler频率为132Hz 采用LMMSE估计和LS估计算法并进行了比较

下一代NGN网络 IMS的介绍。随着各大运营商开始组建IMS网络，IMS网络的前景越来越好，本文介绍IMS组网的网元，接口以及各种应用。-The Next Generation Network(NGN) s key is IMS.follow the china mobile build the IMS network, IMS will be the major telecom network future.

一份在unix环境下变成的文档，内容有关内存溢出处理方面，有对应实例，适合高级编程人员-in a unix environment into the document, the contents of the memory overflow processing, a corresponding example, Programming for senior officers

English version of ZTE C332 Service Manual

Rs232串行通讯控制-Rs232 serial communication control