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demodulation 31

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  • 基于FPGA的光纤光栅解调系统的研究

     波长信号的解调是实现光纤光栅传感网络的关键,基于现有的光纤光栅传感器解调方法,提出一种基于FPGA的双匹配光纤光栅解调方法,此系统是一种高速率、高精度、低成本的解调系统,并且通过引入双匹配光栅有效地克服了双值问题同时扩大了检测范围。分析了光纤光栅的测温原理并给出了该方案软硬件设计,综合考虑系统的解 ...

    /dl/32659.html

    标签: FPGA 光纤光栅 解调系统

    上传时间: 2014-07-24

    上传用户:caiguoqing

  • 扩频通信芯片STEL-2000A的FPGA实现

    针对传统集成电路(ASIC)功能固定、升级困难等缺点,利用FPGA实现了扩频通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核实现NCO模块,在下变频模块调用了硬核乘法器并引入CIC滤波器进行低通滤波,给出了DQPSK解调的原理和实现方法,推导出一种简便的引入?仔/4固定相移的实现方法。采用模块化的设计方法使用VHDL语言 ...

    /dl/40234.html

    标签: STEL 2000 FPGA 扩频通信

    上传时间: 2013-11-19

    上传用户:neu_liyan

  • 基于CPLD的QDPSK调制解调电路设计

    为了在CDMA系统中更好地应用QDPSK数字调制方式,在分析四相相对移相(QDPSK)信号调制解调原理的基础上,设计了一种QDPSK调制解调电路,它包括串并转换、差分编码、四相载波产生和选相、相干解调、差分译码和并串转换电路。在MAX+PLUSⅡ软件平台上,进行了编译和波形仿真。综合后下载到复杂可编程逻辑器件EPM7128SLC84-15中 ...

    /dl/40237.html

    标签: QDPSK CPLD 调制解调 电路设计

    上传时间: 2013-10-28

    上传用户:jyycc

  • 基于FPGA的光纤光栅解调系统的研究

     波长信号的解调是实现光纤光栅传感网络的关键,基于现有的光纤光栅传感器解调方法,提出一种基于FPGA的双匹配光纤光栅解调方法,此系统是一种高速率、高精度、低成本的解调系统,并且通过引入双匹配光栅有效地克服了双值问题同时扩大了检测范围。分析了光纤光栅的测温原理并给出了该方案软硬件设计,综合考虑系统的解 ...

    /dl/40240.html

    标签: FPGA 光纤光栅 解调系统

    上传时间: 2013-10-10

    上传用户:zxc23456789

  • The Hilbert Transform is an important component in communication systems, e.g. for single sideband m

    The Hilbert Transform is an important component in communication systems, e.g. for single sideband modulation/demodulation, amplitude and phase detection, etc. It can be formulated as filtering operation which makes it possible to approximate the Hilbert Transform with a digital filter. Due to the n ...

    /dl/457417.html

    标签: e.g. communication Transform important

    上传时间: 2017-06-25

    上传用户:gxf2016

  • This is a superheterodyne reciever simulation, created in MATLAB - Simulink. The purpose is to study

    This is a superheterodyne reciever simulation, created in MATLAB - Simulink. The purpose is to study the effect of perturbations on the imaginary frequence and on the intermmediate frequence, in the context of incoherent demodulation.

    /dl/489169.html

    标签: superheterodyne simulation Simulink reciever

    上传时间: 2017-09-12

    上传用户:lx9076

  • 多普勒频移

    有多径信道、多普勒频移,瑞利、RICE(莱斯)信道等仿真,QPSK调制和解调等,交织编码。程序经过本人测试,绝对可用,并附上本人测试说明和仿真图像结果-I collected information on 2, how-path channel, Doppler frequency shift, Rayleigh, RICE (Rice) ...

    /dl/507382.html

    标签: 移动通信 多普勒频移

    上传时间: 2015-06-16

    上传用户:whtiger

  • 16qam

    调制解调课程设计 16QAM调制解调代码。包括星座图,频谱分析,误码率分析。-16QAM modulation and demodulation curriculum design code modulation and demodulation. Including constellation, spectrum analysis, bit error rate analysis.

    /dl/510734.html

    标签: qam 16

    上传时间: 2016-05-02

    上传用户:ylqylq

  • Digital Processing Optical Transmission

    Optical communication technology has been extensively developed over the last 50 years, since the proposed idea by Kao and Hockham [1]. However, only during the last 15 years have the concepts of communication foundation, that is, the modulation and demodulation techniques, been applied. This is pos ...

    /dl/521870.html

    标签: Transmission Processing Digital Optical

    上传时间: 2020-05-27

    上传用户:shancjb

  • Transceiver and System Design

    T his book covers basic communications theory and practical imple- mentation of transmitters and receivers. In so doing, I focus on dig- ital modulation, demodulation methods, probabilities, detection of digital signals, and spread spectrum system design and analysis. This book was written for those ...

    /dl/522166.html

    标签: Transceiver System Design

    上传时间: 2020-06-01

    上传用户:shancjb