一 本壓縮包說明： 包含兩個文件夾，一個word文檔，和本使用說明文本文檔。 其中： 文件夾 PCI9054為驅動程序的完整代碼（有注釋）以及類DOS應用程序。 文件夾 PCI9054應用程序（VC）是用VC開發的對應的應用程序，包括指示讀寫時間和顯示讀寫數據。 WORD文檔 是使用DriverWorks向導生成程序框架的過程 程序通過DriverWorks實現對PCI9054 BAR0，BAR2的數據寫入，讀出。讀寫方式是DIRECT IO方式。值得一提的是，采用該方式所能達到的讀寫數據速度只有幾M。另外，程序中沒有加入中斷控制等操作。這些我會在今后不斷得完善
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上傳時間： 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.
標簽： modulated simulate function channel
上傳時間： 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)
標簽： MODULATION TECHNIQUES modulation SPECTRUM
上傳時間： 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.
標簽： Application Utilities the example
上傳時間： 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.
標簽： this code implementation transformation
上傳時間： 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.
標簽： Components Universal Access Data
上傳時間： 2017-07-04
上傳用戶：123456wh
模擬器提供了一個簡單易用的平臺，實施application-layer/P2P協議和測試的大型網絡。在此，已經實現三個應用層組播協議仿真： Sequence of DIRECT unicasts Narada NICE
標簽： 模擬
上傳時間： 2013-12-17
上傳用戶：gaojiao1999
數字控制振蕩器（NCO，numerical controlled oscillator）是軟件無線電、直接數據頻 率合成器（DDS，DIRECT digital synthesizer）、快速傅立葉變換（FFT，Fast Fourier Transform） 等的重要組成部分，同時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 處理、數字通信領域、調制解調、變頻調速、制導控制、電力電子等方面得到越來越廣泛的 應用。
上傳時間： 2017-07-15
上傳用戶：nanshan
In 揚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.
標簽： multi-carrier erformance signaling technique
上傳時間： 2017-07-31
上傳用戶：宋桃子
本系統分電壓測量和信號產生輸出兩大部分，電壓測量部分以模擬電路為主，配合放大模塊、A/D轉化模塊、顯示模塊；通過凌陽單片機進行數據處理，在誤差允許范圍內顯示測量電壓值。信號產生以直接數字式頻率合成器(DIRECT Digital Frequency Synthesis,簡稱DDS或DDFS)為核心，經過AT89S52對DDS芯片內部進行控制，使之輸出標準正弦波形，利用編程實現頻率預置、步進，達到電壓輸出頻率的可調節步進。通過調試與測量完成了題目的基本部分和全部發揮部分的要求并有自己的創新
上傳時間： 2017-08-08
上傳用戶：comua
