3.1 Data Link Layer Design Issues 3.2 Error Detection and Correction 3.3 Elementary Data Link Protocols 3.4 Sliding Windows Protocols 3.5 Protocol Specification and Verification 3.6 Example Data Link Protocols
标签： Data Link Correction Elementary
上传时间： 2016-03-05
上传用户：sz_hjbf
A Case Study: Replacing the persistence layer of a Business Process Engine with JDO The JDO specification (JSR-12) was released from the Java Community Process in April 2002. Its goal is to provide transparent persistence to Java classes. David Jordan provides a concise introduction. Several books are becoming available that provide a more complete description of JDO3.
标签： persistence Replacing JDO Business
上传时间： 2014-01-27
上传用户：541657925
基于OFDM的无线宽带系统仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator. Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation. System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
标签： simulator i.e. system-level link-level
上传时间： 2016-03-15
上传用户：xsnjzljj
This project aim was to build wireless software modem for data communication between two computers using an acoustic interface in the voice frequency range (20Hz– 20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz – 20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz – 16,000Hz). The test files used as information files were text files. This goal was attained both in an incoherent scheme and in a coherent scheme. Build under Matlab code, our modem uses OFDM (orthogonal frequency division multiplexing) modulation, synchronization by LMS sequence, channel estimation (no equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of 2 or 4. To optimize the probability of error, these symbols were mapped using Gray mapping. Report
标签： communication computers software wireless
上传时间： 2014-05-29
上传用户：wangdean1101
基于AT89C51SND1C的硬盘MP3 MP3的全称为MPEGⅠ/Ⅱaudio layer 3.便携式MP3播放器以大量可擦写的FLASH存储器或硬盘存储器为存储戒指,音频信号以文件的形式存在存储介质中,在播放时,MP3播放器对MP3文件进行压缩和解码,并对音效进行设置,最后通过音频借口产生音频信号.
上传时间： 2013-11-30
上传用户：lps11188
Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications-High speed Physical Layer in the 5 GHZ Band
标签： specifications-High Wireless Physical Control
上传时间： 2013-12-18
上传用户：jkhjkh1982
我刚完成的基于Quartus Two 开发环境全部用Verilog硬件描述语言编译无误的MSK调制解调器
上传时间： 2016-04-14
上传用户：CHINA526
蓝牙开发规范 This document discusses the SD transport layer (between the Host and Controller).
标签： Controller discusses the transport
上传时间： 2016-04-15
上传用户：日光微澜
This document describes the UART transport layer (between the Host and the Host Controller).
标签： the Host Controller describes
上传时间： 2014-01-19
上传用户：wang5829
This belongs to the correspondence principle topic, the topic is under two kind of channels the 2psk system analysis
标签： the topic correspondence principle
上传时间： 2013-12-19
上传用户：edisonfather
