根據(jù)突發(fā)OFDM系統(tǒng)的特點，提出了一種具有實用價值的OFDM幀同步方法。在經(jīng)典SC算法的基礎上，提出了改進型SC算法和基于時域PN序列的改進型SC算法。對這兩種算法進行了仿真對比，仿真結果表明基于時域PN序列的SC算法能夠實現(xiàn)突發(fā)幀的精同步，而改進型SC算法只能實現(xiàn)粗同步。但是改進型SC算法更適合FPGA實現(xiàn)，采用Verilog HDL語言，在Quartus II上完成開發(fā)，同時給出了其在ModelSim 6.5b下的仿真結果，結果表明，方案是完全可行的。
上傳時間： 2013-11-12
上傳用戶：yulg
nuc120系列的MCU，是MO核的32位的數(shù)據(jù)手冊，芯片功能多樣，比STM32的功能強
標簽： Technical Reference NuMicro Manual
上傳時間： 2013-11-13
上傳用戶：kxw404582151
多用戶通信實現(xiàn)的本質(zhì)就是把可用的資源劃分成多個相互正交的資源（互不重疊，或互不相同，或互不干擾的資源）頻域資源劃分 —FDMA傳統(tǒng)的FDMA的頻率間隔最小為2× 1/T，“資源互不重疊，互不相同” OFDM頻率間隔為1/T，資源部分重疊，但互不干擾； 時間資源劃分 —TDMA，資源互不重疊，互不相同； 碼字資源劃分 —CDMA，資源重疊，但互不干擾；
標簽： TD-LTE
上傳時間： 2013-11-24
上傳用戶：liglechongchong
臺灣光寶光耦全系列產(chǎn)品 LTV-817S-TA1-C LTV-817X-B LTV-817X-C LTV-817X-C-SC LTV-817-D MOC3021 MOC3021S-TA1 MOC-3052 4N28 4N35 4N35S 4N35S-TA1 6N136 6N137 6N138 6N139 LTV-217-A-G LTV-217-B LTV-352T LTV-354T LTV-356T-B LTV-356T-C LTV-814 LTV-816X-B LTV-816X-C LTV-816X-D
標簽： 光耦
上傳時間： 2013-11-12
上傳用戶：199311
基于matlab的mp3的讀寫函數(shù)Mp3 toolbox for Matlab. Alfredo Fernandez Franco Aalborg University Departament of Acoustics M.Sc. Student aberserk@yahoo.com Includes 2 functions to write and read MP3 files. It works like the commands WAVWRITE and WAVREAD. 1.- Just unpack in the toolbox folder under the MATLAB directory. 2.- Set the MATLAB search path to include that folder. This version was made in MATLAB for WINDOWS only. I ll probably will make the UNIX version later. 01-11-2004.
標簽： Departament University Fernandez Alfredo
上傳時間： 2014-12-02
上傳用戶：開懷常笑
制作本書的目的是為了方便大家的閱讀。轉載時請保持本電子書的完整性。 前言、條款2、16、21、44根據(jù)從Addison-Wesley出版社下載的開放條款翻譯。條款26、27、28、45根據(jù)從Scott Meyers的網(wǎng)站下載的《Three Guidelines for Effective Iterator Usage》一文翻譯。條款43根據(jù)從C/C++ Users Journal網(wǎng)站下載的《STL Algorithms vs. Hand-Written Loops》一文翻譯，條款45根據(jù)從C/C++ Users Journal網(wǎng)站下載的《Distinguishing STL Search Algorithms》一文翻譯。其余部分根據(jù)epubcn放出的電子書制作。
標簽： Addison-Wesley 家 保持
上傳時間： 2015-04-12
上傳用戶：jing911003
pcmcia智能卡的驅動程序例程，對智能卡的pc/sc編程是個參考
上傳時間： 2015-04-23
上傳用戶：liansi
linux下的pcsclite，負責建立linux下的pc/sc架構，管理智能卡
上傳時間： 2015-05-02
上傳用戶：z1191176801
DIGITAL IMAGERY is pervasive in our world today. Consequently, standards for the efficient representation and interchange of digital images are essential. To date, some of the most successful still image compression standards have resulted from the ongoing work of the Joint Photographic Experts Group (JPEG). This group operates under the auspices of Joint Technical Committee 1, Subcommittee 29, Working Group 1 (JTC 1/SC 29/WG 1), a collaborative effort between the International Organization for Standardization (ISO) and International Telecommunication Union Standardization Sector (ITUT). Both the JPEG [1–3] and JPEG-LS [4–6] standards were born from the work of the JPEG committee. For the last few years, the JPEG committee has been working towards the establishment of a new standard known as JPEG 2000 (i.e., ISO/IEC 15444). The fruits of these labors are now coming to bear, as JPEG-2000 Part 1 (i.e., ISO/IEC 15444-1 [7]) has recently been approved as a new international standard.
標簽： Consequently efficient pervasive standards
上傳時間： 2013-12-21
上傳用戶：源弋弋
This text surrounds the development of the electric power SCADA system exactly, aiming at the present condition of the our country electric power charged barbed wire net currently, according to the oneself at the e- lectric power protect the profession after the electricity in seven years of development, design and adjust to try the experience on the scene from following severals carry on the treatise:Is the emergence to the system of SC- ADA and developments to introduce first Carry on the introduction elucidation to applied present condition and the development foregrounds of various terminal equipments communication agreement(rules invite) the next in order Then is the elucidation to the windows the bottom according to the mfc the plait distance environment an- d VC++6.0 plait distance softwares Carry on the more detailed treatise to the realization of the procedure struct- ure frame and the source code again End is the applied case example give examples.
標簽： the development surrounds electric
上傳時間： 2014-10-28
上傳用戶：liuchee
