一 本壓縮包說明： 包含兩個(gè)文件夾，一個(gè)word文檔，和本使用說明文本文檔。 其中： 文件夾 PCI9054為驅(qū)動(dòng)程序的完整代碼（有注釋）以及類DOS應(yīng)用程序。 文件夾 PCI9054應(yīng)用程序（VC）是用VC開發(fā)的對(duì)應(yīng)的應(yīng)用程序，包括指示讀寫時(shí)間和顯示讀寫數(shù)據(jù)。 WORD文檔 是使用DriverWorks向?qū)沙绦蚩蚣艿倪^程 程序通過DriverWorks實(shí)現(xiàn)對(duì)PCI9054 BAR0，BAR2的數(shù)據(jù)寫入，讀出。讀寫方式是direct IO方式。值得一提的是，采用該方式所能達(dá)到的讀寫數(shù)據(jù)速度只有幾M。另外，程序中沒有加入中斷控制等操作。這些我會(huì)在今后不斷得完善
標(biāo)簽：
上傳時(shí)間： 2014-01-06
上傳用戶：xaijhqx
We simulate uncoded BER of BPSK modulated data as a function of SNR -in an AWGN channel -in a Rayleigh fading channel -in an AWGN channel when direct sequence spreading is used and compare results to the theoretical ones. We assume coherent receiver and perfect synchronization.
標(biāo)簽： modulated simulate function channel
上傳時(shí)間： 2014-01-11
上傳用戶：1109003457
SPREAD SPECTRUM MODULATION TECHNIQUES -spread spectrum - those modulation methods that are producing a signal whose spectrum is more wider than of the data signal, the occupied frequency band being independent by the signal of data band. -The signals with spread spectrum of direct sequence type BPSK (BPSK-DS-SS) -The signals with spread spectrum of direct sequence type QPSK – DS–SS - Frequency hopping spread spectrum signals (FH-SS)
標(biāo)簽： MODULATION TECHNIQUES modulation SPECTRUM
上傳時(shí)間： 2017-06-05
上傳用戶：lht618
This example program is the source code for the FT232BM Test Application from our Utilities page. It can be used to test the handshaking lines on FT232BM based RS232/RS485/RS422 designs. This program can also be used for programming the external EEPROM over USB in a manufacturing environment. The test features require the test cable shown on ST_232_245.pdf to be connected. Our D2XX direct drivers should be installed for this application. The code can be modified to fit your requirements. To download the application source code , click here. To download the test cable specification, click here.
標(biāo)簽： Application Utilities the example
上傳時(shí)間： 2013-12-09
上傳用戶：aa17807091
this code is a implementation of the Discrete cosinuss transformation. In this code I have used the direct méthode of calcul by used the equation without used the maatrix multiplication.
標(biāo)簽： this code implementation transformation
上傳時(shí)間： 2013-12-19
上傳用戶：lanwei
Universal.Data.Access.Components 2.50 Universal Data Access Components (UniDAC) is a library of components that provides direct access to most popular database servers from Delphi, Delphi for .NET and, C++Builder. UniDAC can work with such servers as Oracle, Microsoft SQL Server, MySQL, Interbase, Firebird. The UniDAC library is designed to help programmers develop faster and cleaner cross-database applications. UniDAC is a complete replacement for such standard universal technology as dbExpress. UniDAC is a handy in use and efficient data access solution bringing into play many features specific to each server.
標(biāo)簽： Components Universal Access Data
上傳時(shí)間： 2017-07-04
上傳用戶：123456wh
模擬器提供了一個(gè)簡(jiǎn)單易用的平臺(tái)，實(shí)施application-layer/P2P協(xié)議和測(cè)試的大型網(wǎng)絡(luò)。在此，已經(jīng)實(shí)現(xiàn)三個(gè)應(yīng)用層組播協(xié)議仿真： Sequence of direct unicasts Narada NICE
標(biāo)簽： 模擬
上傳時(shí)間： 2013-12-17
上傳用戶：gaojiao1999
數(shù)字控制振蕩器（NCO，numerical controlled oscillator）是軟件無線電、直接數(shù)據(jù)頻 率合成器（DDS，direct digital synthesizer）、快速傅立葉變換（FFT，F(xiàn)ast Fourier Transform） 等的重要組成部分，同時(shí)也是決定其性能的主要因素之一，隨著芯片集成度的提高、在信號(hào) 處理、數(shù)字通信領(lǐng)域、調(diào)制解調(diào)、變頻調(diào)速、制導(dǎo)控制、電力電子等方面得到越來越廣泛的 應(yīng)用。
上傳時(shí)間： 2017-07-15
上傳用戶：nanshan
In 揚(yáng)erformance of multi-carrier DS CDMA Systems?we apply a multi-carrier signaling technique to a direct-sequence CDMA system, where a data sequence multiplied by a spreading sequence modulates multiple carriers, rather than a single carrier. The receiver provides a correlator for each carrier, and the outputs of the correlators are combined with a maximal-ratio combiner. This type of signaling has the desirable properties of exhibiting a narrowband interference suppression effect, along with robustness to fading, without requiring the use of either an explicit RAKE structure or an interference suppression filter.
標(biāo)簽： multi-carrier erformance signaling technique
上傳時(shí)間： 2017-07-31
上傳用戶：宋桃子
本系統(tǒng)分電壓測(cè)量和信號(hào)產(chǎn)生輸出兩大部分，電壓測(cè)量部分以模擬電路為主，配合放大模塊、A/D轉(zhuǎn)化模塊、顯示模塊；通過凌陽單片機(jī)進(jìn)行數(shù)據(jù)處理，在誤差允許范圍內(nèi)顯示測(cè)量電壓值。信號(hào)產(chǎn)生以直接數(shù)字式頻率合成器(direct Digital Frequency Synthesis,簡(jiǎn)稱DDS或DDFS)為核心，經(jīng)過AT89S52對(duì)DDS芯片內(nèi)部進(jìn)行控制，使之輸出標(biāo)準(zhǔn)正弦波形，利用編程實(shí)現(xiàn)頻率預(yù)置、步進(jìn)，達(dá)到電壓輸出頻率的可調(diào)節(jié)步進(jìn)。通過調(diào)試與測(cè)量完成了題目的基本部分和全部發(fā)揮部分的要求并有自己的創(chuàng)新
標(biāo)簽： 分 信號(hào)產(chǎn)生 電壓測(cè)量
上傳時(shí)間： 2017-08-08
上傳用戶：comua
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