gprs

无线hart开发实现与测试,包含所有功能的说明与测试(wireless hart)

NFC协议第二部分，描述了NFC tag 2 通讯协议(NFC protocol second part describes the communication protocol NFC tag 2)

802.3af/at标准,POE 供电协议(standard of 802.3af/at)

In recent years, the number of portable mobile terminal users is increasing with improvement of the wireless communication environment. In addition, mobile multimedia services also bring the increase of wireless traffic and lack of spectrum resources. As a technique for efficient spectrum use, spectrum sharing receives much attention. It dynamically assigns a spectrum channel from a larger area network such as WiMAX to smaller area networks such as WiFi-based wireless LANs and achieves to increase the total wireless communication capacity of this area. In a case where all providers are cooperative, the spectrum sharing can be realized easily and improve user throughput in average. In another case where providers are not cooperative, some spectrum trading methods based on auction theory had been proposed.

a document wich explain spectral null codes

分析了 IEEE 802.15.4a的信道模型，并分析了现今测距的方法：CHAN与TAYLOR等，并在此基础上做了改进(Analysised the channel of IEEE 802.15.4a,and analysised some methods for TDOA and TOA . )

以下为一般性带附件资料发贴选项： 【资料成文时间】：2005 【语言】：英文 【页数】：22×２ 【何人（公司）所著】：DirkW¨ubben 【文件格式】：pdf 【文件原名】：Channel Coding I Matlab solutions of the exercises (The following is a general information with an attachment Posted options: 【Data written Time】: 2005 【Language】: English 【Pages】: 22 × 2 【whom (company) book】: DirkW ¨ ubben】 【file formats: pdf Original】 【File: Channel Coding I Matlab solutions of the exercises)

扩频通信完整的课件和习题答案，清华经典教材，学习无线移动以及跳频通信的基础(Spread spectrum communication courseware and exercises complete answer, Tsinghua classic textbook, learning, and frequency hopping wireless mobile communication base)

encoding binary data using non return to zero

说明：  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)