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程序
说明： 使用matlab编写LDPC码，参考学习编程思路。(non-binary code, matlab)
- 2020-04-14 22:22:29下载
- 积分：1
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stm32f407
can、RS422通信，定时发送串口所接收数据(RS422, can communication, the timing of the serial port to send data received)
- 2021-03-29 14:19:11下载
- 积分：1
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asd
航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控，其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency
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- 2011-07-13 11:21:08下载
- 积分：1
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extended_reciever
Bit Error Rate analysis of an Extended Receiver for Rectangular PAM.
The performance of a digital communication system in the presence of additive white Gaussian noise (AWGN) can be assessed by the measurement of the bit error rate (BER). The Simulink model provided is a rectangular polar pulse amplitude modulation (PAM) baseband system with an AWGN channel and an extended sample and hold receiver with a low pass filter.
An extended receiver has an odd number of sample and hold circuits. What remains to be answered is if such a receiver would provide a more desirable BER than that of a simple S/H receiver.
- 2010-02-01 03:26:22下载
- 积分：1
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jakeschannel
瑞利衰落信道建模
误码率、传输速率
多径传输(Rayleigh fading channel modeling
Bit error rate and transmission rate
Multipath transmission)
- 2020-10-30 00:39:57下载
- 积分：1
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sttc4
一个MIMO系统，发射方采用空时网格码编码，信道为锐利衰落，接收端已知信道情况。程序很详细，对做毕设的很有帮助。(A MIMO system, the launch party use of space-time trellis coding, channel for the sharp decline of the receiving end of known channel case. Procedures in great detail, the complete set of very useful to do.)
- 2020-06-29 04:40:02下载
- 积分：1
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LS_LMMSE_lr_LMMSE
说明： 常用的两种信道估计算法，基于matlab，可以正常运行(Channel estimation algorithm, based on MATLAB)
- 2021-04-24 12:58:47下载
- 积分：1
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TestWebServer
用visaul basic 编写的,连接Wsdl服务的例子(Written visaul basic example connect Wsdl service)
- 2013-03-07 13:46:27下载
- 积分：1
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差分调制与解调
此代码通过随机生成二进制码，对其进行二进制差分调制，以及加入高斯白噪声后对其解调计算误码率，绘制出其输入信噪比与输出信噪比的实验曲线及理论曲线的比较。(This code generates binary codes randomly, modulates them by binary differential modulation, demodulates them with Gauss white noise and calculates the bit error rate, draws the experimental curve and theoretical curve of their input signal-to-noise ratio and output signal-to-noise ratio.)
- 2018-12-17 15:14:55下载
- 积分：1
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rrc_comm.py
说明： 平方根升余弦滤波器作为发送滤波器和匹配滤波器，使用python语言。(Make the square root rise cosine filter as a send filter and a match filter, using the python language.)
- 2020-01-03 16:16:30下载
- 积分：1
