針對傳統集成電路（ASIC）功能固定、升級困難等缺點，利用FPGA實現了擴頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實現NCO模塊，在下變頻模塊調用了硬核乘法器并引入CIC濾波器進行低通濾波，給出了DQPSK解調的原理和實現方法，推導出一種簡便的引入?仔/4固定相移的實現方法。采用模塊化的設計方法使用VHDL語言編寫出源程序，在Virtex-II Pro 開發板上成功實現了整個系統。測試結果表明該系統正確實現了STEL-2000A的核心功能。 Abstract: To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation DETAIL of the demodulation of DQPSK, and derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
上傳時間： 2013-11-06
上傳用戶：liu123
Express Mode uses an 8-bit wide bus path for fast configuration of Xilinx FPGAs. Thisapplication note provides information on how to perform Express configuration specifically forthe Spartan™-XL family. The Express mode signals and their associated timing are defined.The steps of Express configuration are described in DETAIL, followed by DETAILed instructions thatshow how to implement the configuration circui
標簽： Spartan-XL Express XAPP FPGA
上傳時間： 2015-01-02
上傳用戶：nanxia
針對傳統集成電路（ASIC）功能固定、升級困難等缺點，利用FPGA實現了擴頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實現NCO模塊，在下變頻模塊調用了硬核乘法器并引入CIC濾波器進行低通濾波，給出了DQPSK解調的原理和實現方法，推導出一種簡便的引入?仔/4固定相移的實現方法。采用模塊化的設計方法使用VHDL語言編寫出源程序，在Virtex-II Pro 開發板上成功實現了整個系統。測試結果表明該系統正確實現了STEL-2000A的核心功能。 Abstract: To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation DETAIL of the demodulation of DQPSK, and derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
上傳時間： 2013-11-19
上傳用戶：neu_liyan
介紹了以PLC為控制單元，變頻器為執行單元的控制系統及其在煙支輸送儲存系統中的應用，并給出了系統的組成、硬件的配置及具體的實現方法。關鍵詞 : PLC 變頻器輸送儲存系統 Ab str ac t;T hisp aperi ntroducest hec ontrols ystem whichc onsistso fP LCa ndf requencyc onvertera ndi ts application in the buffer conveyor for cigarettes. The system constitute, hardware disposal and realization method are also presented in DETAIL.Keywords:PLC f requencyc onverter b ufferc onveyor
上傳時間： 2013-10-22
上傳用戶：ouyang426
A document about audio,include Mp3 , Mp3Pro, AAC , AAC+ , EAAC+ , AMR , AMR-WB ,AMR-WB+ .It list DETAIL information about this audio type.It is a guide to study these audio in advance
標簽： AMR-WB AAC document include
上傳時間： 2015-02-21
上傳用戶：lizhen9880
The JILRunOnly project is a simple command-line application written in ANSI-C that is intended to demonstrate in DETAIL, how the JILRuntime/JewelScript library can be embedded into an application.
標簽： command-line application JILRunOnly intended
上傳時間： 2015-04-03
上傳用戶：ywqaxiwang
紅外線遙控器讀碼軟件，顯示紅外線波型，讀取并保存碼 IR Remote Control Unit Code Read System 產品詳細描述： 能夠像顯示器一樣顯示紅外線碼的波型 可以讀多達１５０種格式的紅外線碼 顯示紅外線碼的時間非常準確，誤差只有幾個微秒。 具有錯誤檢測功能 保存紅外線碼功能 自動識別碼的格式 比較樣機與所寫的新軟件的遙控器碼的異同 具體情況請訪問本網站：http://www.crzman.com/IR_Reader.htm Display the Infrared wave on the software like oscillograph. Can read more than 150 kinds of infrared code format Display the Infrared time and the tolerance no more than many us. Have error detect function Save Infrared code function Auto identify code s format Compare the code from sample and new Remote Control Unit code) DETAIL instance please visit address: http://www.crzman.com/IR_Reader.htm
上傳時間： 2015-07-03
上傳用戶：ccclll
Continuous wave radars and pulsed radars are discussed.Resolving range and Doppler mbiguities is also discussed in DETAIL.
標簽： radars Continuous mbiguities and
上傳時間： 2013-12-19
上傳用戶：haoxiyizhong
英文版,pdf格式。 詳細說明： Title: STL Tutorial and Reference Guide: C++ Programming with the Standard Template Library (2nd Edition) URL: http://www.amazon.com/exec/obidos/tg/DETAIL/-/0201379236/ ISBN: 0201379236 Author: David R. Musser / Gillmer J. Derge / Atul Saini / Gilmer J. Derge Publisher: Addison-Wesley Page: 560 Edition: 2nd edition (March 27, 2001) Catalog: C++ Format: PDF Size: 3.8M Supplier: December Summary: The Standard Template Library was created as the first library of genetic algorithms and data structures, with four ideas in mind: generic programming, abstractness without loss of efficiency, the Von Neumann computation model, and value semantics. This guide provides a tutorial, a description of each element of the library, and sample applications. The expanded second edition includes new code examples and demonstrations of the use of STL in real-world C++ software development it reflects changes made to STL for the final ANSI/ISO C++ language standard.
標簽： Programming Reference Standard Tutorial
上傳時間： 2015-09-02
上傳用戶：Breathe0125
The combined demo is dedicated for S1C33L05, so DMT33L05 should be used to load and run the demo. For the DETAIL description of DMT33L05, please refer to S5U1C33L05D1_User_Manual.
標簽： demo dedicated combined should
上傳時間： 2014-07-05
上傳用戶：lili123
