These papers are very good and useful for WSN

用FPGA实现数字低通FIR滤波器，对FIR滤波器的开发有一定的借鉴意义。-Using FPGA digital low-pass FIR filter, the development of the FIR filter has a certain degree of referential significance.

双音多频的DTMF信号编码程序，产生DTMF信号进行编码。-DTMF DTMF signal coding procedures have DTMF signal coding.

本文比较了宽带传输方案中SC_FDE系统与OFDM系统的性能-This article compares the broadband transmission program SC_FDE system and OFDM system performance

蓝牙语音网关软件源代码-Bluetooth voice gateway software source code

微软亚洲研究院论文：3G网络中可扩展视频的网络自适应传输-papers Microsoft Research Asia : 3G network scalable video Adaptive Transmission Network

RS232接口演示程序-RS232 interface demo program

OPNET仿真实例，有助于初学者的快速学习。-OPNET simulations help beginners learn fast.

WCDMA接口协议中文版，用于详细了解WCDMA接口结构组成及流程-Chinese version of WCDMA Interface Protocol for details about the composition and structure of WCDMA interface flow

Java即时通信工具(JICQ)设计文档(PPT)，内容详细。-Java instant communication tools (JICQ) design documentation (PPT), which detailed.

Visual C++课程设计案例精编一书自带例子程序：通讯录-Visual C cases precision curriculum design a book series, bringing their examples : Contacts