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该工程实现对单载波系统QPSK的频偏估计算法 freq_estimate
该工程实现对单载波系统QPSK的频偏估计算法。调相信号在接收机相干解调时需要同频同相的参考载波,而发射机和接收机之间往往存在频率偏差,为了消除这种误差,必须在软件层面实现。使用了QPSK四相调制的信号特点进行载波频偏估计,经验证,效果较好。(This project implements frequency offset estimation algorithm for single carrier system QPSK. The phase modulation signal needs the same frequency reference carrier in the coherent demodulation of the receiver, and the frequency deviation often exists between the transmitter and the receiver. In order to eliminate this error, it must be implemented on the software level. The carrier frequency offset estimation is carried out by using the signal characteristics of QPSK four phase modulation.)
- 2020-06-27 04:40:01下载
- 积分:1
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project1
研究d2d通信加中继节点来优化蜂窝小区边缘用户通信,并通过MATLAB仿真(The D2D communication and relay nodes are studied to optimize the edge user communication of cellular cell, and the simulation is carried out by MATLAB.)
- 2019-04-25 10:55:26下载
- 积分:1
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OFDM
宽带无线通信OFDM技术.北京邮电大学王文博主编(OFDM broadband wireless communications technology. Wenbo Beijing University of Posts and Telecommunications Editor)
- 2009-11-12 11:22:19下载
- 积分:1
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LDPC
说明: 实现LDPC信道码的仿真,已在大型软件开发项目中实用(LDPC code and decode
matlab)
- 2020-11-30 16:47:58下载
- 积分:1
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lesson4
说明: 利用pluto设备实现fm调制与解调,simulink代码文件(Use pluto equipment to realize fm modulation and demodulation, simulink code file)
- 2020-12-17 13:38:28下载
- 积分:1
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程序
说明: 1、基带码型仿真
(1)通过仿真观察占空比为50%、 75%以及100%的单、
双极性归零码波形以及其功率谱,分析不同占空比对
仿真结果的影响。
(2) 通过仿真产生一随机消息码序列,将其分别转换为
AMI码和HDB3码,观察它们的波形及其功率谱密度。
2、数字带通调制系统仿真
设计一个采用2ASK( OOK) 调制的数字通信系统:
产生二进制随机数据,并仿真其对应的2ASK调制波形,
分析其频谱。所产生的调制波形加入不同信噪比的白噪声,
选取合适的接收方案,画出系统误码率曲线,并与理论误
码率进行对比。(1.Baseband pattern simulation
2. Simulation of digital band-pass modulation system)
- 2020-06-29 07:20:01下载
- 积分:1
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C.Levy
说明: 在E.C.Levy的“光电振荡器建模”一文中,利用MATLAB函数编写了单回路OEO仿真程序。为了说明它的用途,我们生成图2,4,5,8和11。(The single-loop OEO simulation is written by using MATLAB functions)
- 2021-03-25 11:19:14下载
- 积分:1
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HC-05-bluetooth
HC-05蓝牙模块的使用,包括全部参数,外部电路搭建,AT指令等(HC-05 Bluetooth module to use, including all parameters, the external circuit to build, AT commands, etc.
)
- 2011-10-24 21:14:11下载
- 积分:1
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稀疏天线优化
运用遗传算法,对天线的庞斑进行优化,得到最佳的线性阵列的分布(Genetic algorithm is used to optimize the spot of antenna and get the optimal distribution of linear array)
- 2018-11-19 19:24:24下载
- 积分:1
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gaborfilter
三个参数不同的gabor滤波器设计,包括图片和源代码(Three parameters of different gabor filter design, including images and source code)
- 2008-04-20 12:55:58下载
- 积分:1