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
標(biāo)簽： Data Link Correction Elementary
上傳時(shí)間： 2016-03-05
上傳用戶：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.
標(biāo)簽： persistence Replacing JDO Business
上傳時(shí)間： 2014-01-27
上傳用戶：541657925
基于OFDM的無線寬帶系統(tǒng)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.
標(biāo)簽： simulator i.e. system-level link-level
上傳時(shí)間： 2016-03-15
上傳用戶：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
標(biāo)簽： communication computers software wireless
上傳時(shí)間： 2014-05-29
上傳用戶：wangdean1101
基于AT89C51SND1C的硬盤MP3 MP3的全稱為MPEGⅠ/Ⅱaudio layer 3.便攜式MP3播放器以大量可擦寫的FLASH存儲(chǔ)器或硬盤存儲(chǔ)器為存儲(chǔ)戒指,音頻信號(hào)以文件的形式存在存儲(chǔ)介質(zhì)中,在播放時(shí),MP3播放器對(duì)MP3文件進(jìn)行壓縮和解碼,并對(duì)音效進(jìn)行設(shè)置,最后通過音頻借口產(chǎn)生音頻信號(hào).
標(biāo)簽： MP3 FLASH audio layer
上傳時(shí)間： 2013-11-30
上傳用戶：lps11188
Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications-High speed Physical Layer in the 5 GHZ Band
標(biāo)簽： specifications-High Wireless Physical Control
上傳時(shí)間： 2013-12-18
上傳用戶：jkhjkh1982
我剛完成的基于Quartus Two 開發(fā)環(huán)境全部用Verilog硬件描述語(yǔ)言編譯無誤的MSK調(diào)制解調(diào)器
標(biāo)簽： Quartus Verilog MSK Two
上傳時(shí)間： 2016-04-14
上傳用戶：CHINA526
藍(lán)牙開發(fā)規(guī)范 This document discusses the SD transport layer (between the Host and Controller).
標(biāo)簽： Controller discusses the transport
上傳時(shí)間： 2016-04-15
上傳用戶：日光微瀾
This document describes the UART transport layer (between the Host and the Host Controller).
標(biāo)簽： the Host Controller describes
上傳時(shí)間： 2014-01-19
上傳用戶：wang5829
This belongs to the correspondence principle topic, the topic is under two kind of channels the 2psk system analysis
標(biāo)簽： the topic correspondence principle
上傳時(shí)間： 2013-12-19
上傳用戶：edisonfather
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