排序:上传时间 相关度 下载量 查看数

Modulation 207

按分类查找:

  • 无线电设计入门资料

    Abstract: The process of designing a radio system can be complex and often involves many project tradeoffs. Witha little insight, balancing these various characteristics can make the job of designing a radio system easier. Thistutorial explores these tradeoffs and provides details to consider for ...

    /dl/36117.html

    标签: 无线

    上传时间: 2013-12-13

    上传用户:eastgan

  • 克服了正交频分复用(OFDM)和IEEE 1901.2智能电网通信的挑战

    Abstract: While many questions still surround the creation and deployment of the smart grid, the need for a reliablecommunications infrastructure is indisputable. Developers of the IEEE 1901.2 standard identified difficult channel conditionscharacteristic of low-frequency powerline communications ...

    /dl/36256.html

    标签: 1901.2 OFDM IEEE 正交频分复用

    上传时间: 2013-10-18

    上传用户:myworkpost

  • 快速跳频通信系统同步技术研究

    同步技术是跳频通信系统的关键技术之一,尤其是在快速跳频通信系统中,常规跳频通信通过同步字头携带相关码的方法来实现同步,但对于快跳频来说,由于是一跳或者多跳传输一个调制符号,难以携带相关码。对此引入双跳频图案方法,提出了一种适用于快速跳频通信系统的同步方案。采用短码携带同步信息,克服了快速跳频难以携带 ...

    /dl/36495.html

    标签: 快速跳频 同步技术 通信系统

    上传时间: 2013-11-23

    上传用户:mpquest

  • Arduino学习笔记4_Arduino软件模拟PWM

    注:1.这篇文章断断续续写了很久,画图技术也不精,难免错漏,大家凑合看.有问题可以留言.      2.论坛排版把我的代码缩进全弄没了,大家将代码粘贴到arduino编译器,然后按ctrl+T重新格式化代码格式即可看的舒服. 一、什么是PWM PWM 即Pulse Wavelength Modulation 脉宽调制波,通过调整输出信号占空 ...

    /dl/37637.html

    标签: Arduino PWM 软件模拟

    上传时间: 2013-10-08

    上传用户:dingdingcandy

  • 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

  • LT5528 WCDMA ACPR和AltCPR测量

      ACPR (adjacent channel power ratio), AltCPR (alternatechannel power ratio), and noise are important performancemetrics for digital communication systems thatuse, for example, WCDMA (wideband code division multipleaccess) modulation. ACPR and AltCPR are bothmeasures of spectral regrowth. T ...

    /dl/41888.html

    标签: AltCPR WCDMA 5528 ACPR

    上传时间: 2013-11-02

    上传用户:maricle

  • Arduino学习笔记4_Arduino软件模拟PWM

    注:1.这篇文章断断续续写了很久,画图技术也不精,难免错漏,大家凑合看.有问题可以留言.      2.论坛排版把我的代码缩进全弄没了,大家将代码粘贴到arduino编译器,然后按ctrl+T重新格式化代码格式即可看的舒服. 一、什么是PWM PWM 即Pulse Wavelength Modulation 脉宽调制波,通过调整输出信号占空 ...

    /dl/42532.html

    标签: Arduino PWM 软件模拟

    上传时间: 2013-10-23

    上传用户:mqien

  • 幅度调制

    幅度调制,It is a diffrent matlab code for amplitude modulation.

    /dl/158617.html

    标签: 幅度调制

    上传时间: 2013-12-19

    上传用户:changeboy

  • 频率调制

    频率调制,It is a diffrent matlab code for frequency modulation.

    /dl/158618.html

    标签: 频率 调制

    上传时间: 2015-05-30

    上传用户:wanqunsheng

  • The Viterbi algorithm is the same as the binary case with one main difference: The survivor sequence

    The Viterbi algorithm is the same as the binary case with one main difference: The survivor sequences include the uncoded bits, which are decided at each trellis stage when selecting one of two parallel branches with the largest correlation metric. Presently, only 8-PSK modulation is considered. E ...

    /dl/171810.html

    标签: difference The algorithm the

    上传时间: 2015-07-05

    上传用户:qiaoyue