摘要：AD9852是美國ANALOGDEVICES公司生產的新型直接數字頻率合成器(DDS)，具有頻率轉換速度快(小于lt~s)、頻譜純度高、工作溫度范圍寬(一25℃～+85℃)、集成度高等特點，是一種使用方便靈活、功能較強的芯片。AD9852由帶有48位相位累加的數控振蕩器、可墑程參考時鐘倍乘器、反向正弦濾波器、計數倍乘器、兩個300MHz12住數模轉換器、高速模擬比較器和接口邏輯組成。可用于本振合成回路，高精度時鐘發生器和FSK／／3PSK調制。文中介紹了AD9852的工作原理、引腳功能以廈具體應用。
標簽： ANALOGDEVICES 9852 DDS AD
上傳時間： 2015-11-30
上傳用戶：kiklkook
This paper examines the asymptotic (large sample) performance of a family of non-data aided feedforward (NDA FF) nonlinear least-squares (NLS) type carrier frequency estimators for burst-mode phase shift keying (PSK) modulations transmitted through AWGN and flat Ricean-fading channels. The asymptotic performance of these estimators is established in closed-form expression and compared with the modified Cram`er-Rao bound (MCRB). A best linear unbiased estimator (BLUE), which exhibits the lowest asymptotic variance within the family of NDA FF NLS-type estimators, is also proposed.
標簽： performance asymptotic examines non-data
上傳時間： 2015-12-30
上傳用戶：225588
本課程提供的示范程序包括三個方面，分別是BPSK、M（M=4、8）進制PSK和DPSK通信系統的仿真。前者由c++實現，后兩者用Matlab語言編寫。
上傳時間： 2014-12-22
上傳用戶：釣鰲牧馬
fpga的應用，一個正弦信號發生器，可以調節頻率大小，和PSK,QSK,FM,AM等調制
標簽： fpga
上傳時間： 2014-01-11
上傳用戶：zhuyibin
臺灣義隆單片機價格便宜，功耗低，集成資源豐富，在消費電子中占有絕對優勢。 本代碼實現一個完整的來電顯示電話機的功能，對于初學者有很好的借鑒意義。關鍵詞 fsk 解碼 CID
上傳時間： 2014-12-22
上傳用戶：youke111
These listed libraries are written in WTL. But it s really hard to mix both MFC & WTL together. Obviously, it s not reasonable to ask a developer or a team to giving up MFC and move to the WTL world just because there were some great controls or visual Frameworks written in WTL (there are many things that should be considered especially in a company with hundreds of developers like the company I work for). Unfortunately, there was no such good and free visual Framework in MFC until now. Whatever difficulties there are, I still desire to be able to use them and now my effort is here to be shared with you. Under the Hood
標簽： libraries WTL together written
上傳時間： 2013-12-18
上傳用戶：wcl168881111111
This little Program allows you to send commands to the CardReader (CT-BCS) or to the Card itself. First you will be ask to what Port the Reader is connected (0=COM1, 1=COM2). Then the Class-Byte (CLA), Instruction-Byte (INS), Parameter 1 (P1), Parameter 2 (P2). If wou don愒 want to send Parameter 3 (P3) press Ctrl-d (^d). If you enter a number then you have to the Bytes of the Datafield. After the last Byte of the Datafield is entered the whole APDU is send the replay is displayed. After that you can send the next APDU.
標簽： CardReader the commands to
上傳時間： 2016-04-23
上傳用戶：nanxia
This folder has some scritps that you may find usefull. All of it comes from questions that I ve received in my email. If you have a new request/question, feel free to send it to marceloperlin@gmail.com. But please, don t ask me to do your homework. Passing_your_param0 This folder contains instructions (and m files) for passing you own initial parameters to the fitting function. I also included a simple simulation script that will create random initial coefficients (under the proper bounds) and fit the model to the data.
標簽： that questions scritps usefull
上傳時間： 2013-12-28
上傳用戶：netwolf
一個關于調制解調的小程序，是關于FSK的，有興趣可以參考
上傳時間： 2016-05-19
上傳用戶：亞亞娟娟123
擴展頻譜技術有多種基本實現方式，本文主要介紹的是直接序列 擴頻技術，特別針對二進制的PSK 調制解調技術，直接序列擴頻系統的抗干 擾能力分析與直接序列擴頻系統的同步方法，并進行了相關仿真分析
上傳時間： 2016-06-14
上傳用戶：txfyddz
