短信网关之间，以及SP与短信网关之间的接口协议

sip_rfc2543 标准化文档-sip_rfc2543 standardized documents

Construct the short length of QC LDPC codes without girth 4 and girth 6

利用最小方差方法估计复正弦加白噪声得平稳信号的功率谱-Minimum variance estimation using complex sinusoidal plus a stationary white noise signal power spectrum

Traffic generator (winsip is both voice and video VoIP software, a simple user interface, allowing users to easily create their own test scenarios, and complete SIP voice/video 7 layer simulation function is the essence of this set of test instrument.

几个关于利用傅里叶变换进行谐波分析的代码。有详细的变换过程，比较适合想了解原理的初学者。-Several on the use of Fourier transform for harmonic analysis of the code. The transformation process in detail, more suitable for beginners would like to know the principle.

VISUAL C++ 开发的一个简单局域网聊天工具源代码-VISUAL C++

中兴-GPRS原理培训手册,文档详细描述了整个GPRS的构成架构及数据交换原理，希望对大家有用。-ZTE-GPRS principle of training manuals, documents GPRS is described in detail the composition of the whole structure and data exchange principle, useful for all of us hope.

ultra wideband technology

应用背景数据收集修订。一个函数添加到收集数据的基础上，在网格中的初始化（即使是集群大小的假设）为了clusterize所有节点，区域划分为若干网格。每个网格可以被视为一个集群。均匀地聚类可以实现所有节点的能量耗散更明显。关键技术节点是连续数据发送模式。没有完整性检查包括。

RFC3027:IP网络地址转换器的协议复杂性