摘要：AD9852是美国ANALOGDEVICES公司生产的新型直接数字频率合成器(DDS)，具有频率转换速度快(小于lt~s)、频谱纯度高、工作温度范围宽(一25℃～+85℃)、集成度高等特点，是一种使用方便灵活、功能较强的芯片。AD9852由带有48位相位累加的数控振荡器、可墒程参考时钟倍乘器、反向正弦滤波器、计数倍乘器、两个300MHz12住数模转换器、高速模拟比较器和接口逻辑组成。可用于本振合成回路，高精度时钟发生器和FSK／／3PSK调制。文中介绍了AD9852的工作原理、引脚功能以厦具体应用。
标签： ANALOGDEVICES 9852 DDS AD
上传时间： 2015-11-30
上传用户：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.
标签： performance asymptotic examines non-data
上传时间： 2015-12-30
上传用户：225588
本课程提供的示范程序包括三个方面，分别是BPSK、M（M=4、8）进制PSK和DPSK通信系统的仿真。前者由c++实现，后两者用Matlab语言编写。
上传时间： 2014-12-22
上传用户：钓鳌牧马
fpga的应用，一个正弦信号发生器，可以调节频率大小，和PSK,QSK,FM,AM等调制
标签： fpga
上传时间： 2014-01-11
上传用户：zhuyibin
台湾义隆单片机价格便宜，功耗低，集成资源丰富，在消费电子中占有绝对优势。 本代码实现一个完整的来电显示电话机的功能，对于初学者有很好的借鉴意义。关键词 fsk 解码 CID
上传时间： 2014-12-22
上传用户：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
标签： libraries WTL together written
上传时间： 2013-12-18
上传用户：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.
标签： CardReader the commands to
上传时间： 2016-04-23
上传用户：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.
标签： that questions scritps usefull
上传时间： 2013-12-28
上传用户：netwolf
一个关于调制解调的小程序，是关于FSK的，有兴趣可以参考
上传时间： 2016-05-19
上传用户：亚亚娟娟123
扩展频谱技术有多种基本实现方式，本文主要介绍的是直接序列 扩频技术，特别针对二进制的PSK 调制解调技术，直接序列扩频系统的抗干 扰能力分析与直接序列扩频系统的同步方法，并进行了相关仿真分析
上传时间： 2016-06-14
上传用户：txfyddz
