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程序
说明： 基于matlab的QPSK调制与解调程序(QPSK modulation and demodulation)
- 2020-06-25 16:20:01下载
- 积分：1
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14.5_modeler_tutorial_pdfs
OPNET14.5的帮助文档，几乎所有的现行阶段的教材都是由该软件帮助文档改编或缩减而成，所以该文档为OPNET学习者必备手册之一。(OPNET14.5 the help of documents, almost all of the current phase of the teaching materials are adapted to the software help files or reduced form, so the document must have the manual for one of OPNET learners.)
- 2021-03-30 09:59:11下载
- 积分：1
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169482
易语言技能模拟技能CALL 还原VM 降低被检测几率()
- 2017-12-19 15:29:53下载
- 积分：1
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SFFT
此程序实现了稀疏傅里叶变换全过程,包括频谱重排，窗函数滤波，算法重构(it realizes the sparse fft)
- 2021-04-03 18:49:05下载
- 积分：1
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joint-detection-of-TD-SCDMA
为评估TD_SCDMA下行链路联合检测接收机的性能，使用MATLAB软件进行链路仿真，本程序主要是实现用户QPSK基带调制、扩频、加扰、形成时隙、形成子帧、以及进行脉冲形成滤波，通过加性高斯白噪声信道和瑞利衰落多径信道，信道估计、联合检测等几个主要过程，整个仿真都是在基带进行的。(Link simulation to assess the performance of the TD_SCDMA Downlink joint detection receiver using MATLAB software, this program is the main user QPSK baseband modulation, spreading, scrambling to form a slot to form a sub-frame, as well as for pulse formation filter, through an additive white Gaussian noise channels and Rayleigh fading multipath channel, channel estimation, the joint detection of several major process, the entire simulation in the baseband)
- 2012-02-29 21:00:50下载
- 积分：1
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OFDM
大学时的毕业论文，OFDM降低峰均比的方法论文(Thesis at the university, OFDM PAPR reducing methods papers)
- 2014-04-14 22:08:35下载
- 积分：1
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北斗2.1协议
说明： 北斗通信设备通用的协议，串口通信与北斗卫星的通信协议，(The general protocol of Beidou communication equipment, serial communication protocol with Beidou satellite)
- 2020-09-23 12:17:49下载
- 积分：1
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flyback
开关电源反激电路48V/1.5A。电路原理图(Switching power supply flyback circuit 48V/1.5A. Circuit schematic)
- 2021-04-12 23:38:57下载
- 积分：1
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third_-octave
采用带通滤波法，对信号进行1/3倍频程分析。程序带详细注释。(no english)
- 2020-11-08 14:09:47下载
- 积分：1
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4
说明： 4. 试说明卷积编解码的工作原理：
(1) 使用Simulink仿真卷积编码，并用Viterbi译码的方法进行解码，其中的编码、译码全部是自己编写代码(S-Function方式)，不是调用Simulink的已有编码、译码函数。
(2) 请在加性白高斯噪声信道中，画出比特信噪比与误码率的关系曲线。(4. Try to explain the working principle of convolutional codec:
(1) Simulink was used to simulate convolutional coding, and Viterbi decoding method was used for decoding. The coding and decoding were all written by oneself (s-function method), rather than calling the existing coding and decoding functions of Simulink.
(2) in the additive white gaussian noise channel, please draw the curve of the relationship between bit signal-to-noise ratio and bit error rate.)
- 2021-01-23 11:48:39下载
- 积分：1
