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analog_modulation

于 2021-04-25 发布

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下载积分: 1 下载次数: 16

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代码说明：

说明：模拟调制识别各特征参数随信噪比变化曲线。信号的瞬时信息包括瞬时幅度、瞬时相位、瞬时频率及其不同角度的统计特征值，其中瞬时幅度、瞬时相位、瞬时频率是一个信号最基本的特征。（AM、DSB、SSB、VSB、FM、AM-FM）(Simulated Modulation Recognition Curve of Variation of Characteristic Parameters with Signal-to-Noise Ratio)

文件列表：

analog_modulation\analog_modu.asv, 7274 , 2019-03-07
analog_modulation\analog_modu.m, 6929 , 2019-03-07
analog_modulation\zdy.m, 393 , 2019-03-07
analog_modulation\zdy1.m, 391 , 2019-03-07
analog_modulation\zdy2.m, 169 , 2010-11-15
analog_modulation\zdy3.m, 248 , 2010-11-15
analog_modulation\zdy4.m, 150 , 2010-11-22
analog_modulation\zdy5.m, 175 , 2019-03-07
analog_modulation, 0 , 2019-03-07

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ADIBEAM
ADIBEAM Abstract—the increase in navigation accuracy demanded by EGNOS and Galileo and their future evolution encourages the study and design of advance receiver architectures. In that direction, the ADIBEAM project focuses on the design of high accuracy ground stations, specifically GNSS Reference Stations, in order to improve its robustness in front of multipath and interference errors with the goal of achieving centimeter level tracking accuracy. The adoption of antenna arrays and digital beamforming at the ground reference station receivers is one of the most promising approaches to cope with errors induced by multipath and interference.

2012-01-23 23:20:55下载

积分：1
ofdm
用matlab完成正交频分复用ofdm系统的信号发射与接收仿真(ofdm communication using matlab)

2020-12-18 17:59:10下载

积分：1
Polar_Codes_in_MATLAB_v2
实现ldpc 编译码功能，并且输出BER和曲线图。(LDPC encoder and decoder)

2017-11-09 15:14:18下载

积分：1
MATLAB
接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构，以及定时估计，频偏估计，剩余误差跟踪的算法可参考算法说明文档。这里对程序的流程进行说明。首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。 (good)

2020-11-04 23:49:52下载

积分：1
channel_simulation
信道基本特性的仿真程序，包括小尺度衰落信道（频率选择性信道和时间选择性信道）的仿真，分集接收及误码率的仿真。(Channel basic characteristics of the simulation program. including small-scale fading channel (frequency selective channel and time-selective channel) simulation, Diversity reception and BER simulation.)

2007-01-05 08:38:50下载

积分：1
all70.tar
the file is implimented in C++ for wimax network it is explication of qualitie of service

2011-06-24 08:21:26下载

积分：1
null
空域零陷，首先用doa技术估计直达波方向，然后置零，用于直达波消除。(In spatial nulling, DOA technique is used to estimate the direction of direct wave, and then zeroing is used to eliminate direct wave.)

2019-03-07 09:41:22下载

积分：1
LFM
脉冲压缩的匹配滤波。目标距离分别为10米，30米和100米，对于未压缩的脉冲，三个回波信号混叠在一起，不能分辨，而经过脉冲压缩的脉冲信号则可通过匹配滤波收到3个回波信号(Matched filtering for pulse compression.Target distances are 10 metres, 30 metres and 100 metres, respectively. For uncompressed pulses,The three echo signals are overlapped and can not be distinguished. While pulse compression can distinguish three echo signals after matched filtering)

2021-04-15 20:38:54下载

积分：1
s_4FSK
利用MATLAB/simulink实现4FSK调制(Using matlab simulink for simulation modulation 4FSk)

2020-11-19 10:29:38下载

积分：1
QPSK-SimulationGray-CodingRayleigh-Fading
QPSK SimulationGray CodingRayleigh Fading

2011-07-26 00:08:37下载

积分：1

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