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相干信源一维线阵DOA估计
说明： 均匀线阵估计相干信源DOA,运用空间平滑，Toeplitz矩阵法、矢量重构等方法实现(Uniform linear array estimation of coherent source DOA)
- 2020-05-27 10:27:19下载
- 积分：1
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Communication
介绍了16PSK与16QAM调制的概念，分析了调制的频带利用率和误码性能仿真，总结了16QAM调制和16PSK调制的优缺点。(Introduction of 16QAM modulation 16PSK with the concept of analysis of modulation bandwidth efficiency and BER simulation, summed up the 16PSK modulation 16QAM modulation and the advantages and disadvantages.)
- 2007-09-13 16:29:42下载
- 积分：1
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pracsim-3
通信基本仿真3,适合初学者学习的代码,包括了调制,分析等等:使用IIR filter的经典模拟滤波器（巴特沃斯Butterworth,切比雪夫Chebyshev）,Bartlett周期图谱，加窗Bartlett周期图谱，基带波形仿真，IIR的贝塞尔滤波器Bessel Filter，二进制对称信道Binary Symmetric Channel仿真，比特序列，Remez滤波，BPSK复合基带信号仿真，载波生成器，椭圆滤波器Elliptical Filter，FFT,FSK调制及解调，高斯噪声Gaussian仿真，直方图，理想AM，线性PLL，BP混淆器，理想MPSK，正交振幅调变（QAM，Quadrature Amplitude Modulation），正交相移键控(QPSK)，Rayleigh Noise瑞利噪声，Yule-Walker Psd功率谱密度函数。(matlab simulte)
- 2009-12-26 23:12:00下载
- 积分：1
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QPSK_BER
实现AWGN信道下，QPSK调制解调，系统的误码率(Achieving AWGN channel QPSK modulation and demodulation, the BER)
- 2012-09-13 22:19:43下载
- 积分：1
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firdesign
说明： 设计一个数字低通滤波器，来近似一个理想数字滤波器(Design a digital low-pass filter to approximate an ideal digital filter)
- 2021-04-16 01:08:54下载
- 积分：1
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79419138BPSK_SM
基于matlab的空间调制仿真代码模型，QAM调制(Spatial modulation simulation code)
- 2021-04-10 20:58:58下载
- 积分：1
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OFDM_Channel-estimation
OFDM(正交频率调制)实现多载波调制基本思想是将带宽信道分解成许多并行的窄子信道，是每个子信道的想干带宽，从而实现平稳衰落。搭建了完整的OFDM信道链路系统，运用三种不同的信道估计方法(LS信道估计、DFT信道估计、Improved-DFT信道估计)，并对AWGN理想信道和衰落信道误码情况进行了仿真和比较。(OFDM (Orthogonal Frequency Modulation) multicarrier modulation basic idea bandwidth channel is decomposed into a number of parallel narrow subchannels, each subchannel wanted bandwidth, in order to achieve a smooth fading. Build a complete OFDM channel link system, the use of three kinds of different channel estimated method (LS channel estimated, to the DFT letter Tao estimates, Improved-the DFT letter Road estimated), and AWGN ideal letter Road and fading channel bit error situation conducted a simulation and comparison .)
- 2012-10-17 10:56:16下载
- 积分：1
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Logik25SModbusDecodingAlarmInfo
Logika 25s controllers Modbus alarm codes documentation
- 2017-05-18 19:35:03下载
- 积分：1
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PCM
说明： 在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)
- 2019-01-30 20:16:08下载
- 积分：1
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ulll__secgor
工控软件的福音：欧姆龙PLC通讯系统(含源代码)易语言()
- 2017-12-17 19:50:04下载
- 积分：1
