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本设计根据锁相环原理，通过两片CD4046搭接基本电路来实现FM调制/解调电路的设计，将调制电路的输出信号作为解调电路的输入信号，最终实现信号的调制解调。原理分析，我们得到的载波信号的电压 大于3V，最大频率偏移 5KHz，解调电路输出的FM调制信号的电压 大于200mV可以看出我们的具体设计符合设计指-The design phase locked loop principle, by two overlapping basic circuit to achieve CD4046 FM mod
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Several approaches to combine multicarrier modulation with code-division multiple access (CDMA) techniques have been proposed with the aim of bringing the best of both worlds to wireless communications [1]. Among these, multi-carrier CDMA (MC-CDMA),
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QPSK调制后进行载波同步，对频偏进行修正，锁定频率。最后误差波形收敛-After QPSK modulation carrier synchronization, frequency offset correction, locking frequency. The last error waveform convergence
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单相逆变，采用单极性倍频调制模式，两电平逆变，simulink仿真模型-Single phase full bridge inverter, and adopts the model of single polarity modulation frequency doubling, two level inverter, simulink simulation model
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使用MATLAB 代码完成COSTAS环对QPSK调制的解调载波频率的跟踪-Use MATLAB code completion COSTAS loop tracking of QPSK modulation carrier frequency demodulation
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雷达抗干扰，雷达波形调频率捷变抗多目标干扰-Radar jamming, radar waveform modulation frequency-agile multi-target anti-interference
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Radar jamming, radar waveform modulation frequency-agile multi-target anti-interference
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雷达信号数字水印技术联合调频率捷变抗干扰-Radar jamming, radar waveform modulation frequency-agile multi-target anti-interference
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雷达波形捷变联合数字水印单目标抑制算法研究-Radar jamming, radar waveform modulation frequency-agile multi-target anti-interference
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使用matlab对无线通信中重要的调制技术QPSK进行了仿真设计，包括调制，信道环境模拟，解调，最重要的是解决了无线通信中的载波同步问题，对频偏和相偏进行了估计，也实现了码元同步。-Use matlab important wireless communication QPSK modulation technique simulation design, including modulation, channel environment simulation, demodulation, th
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Multiple frequency-shift keying (MFSK) is a variation of frequency-shift keying (FSK) that uses more than two frequencies. MFSK is a form of M-ary orthogonal modulation, where each symbol consists of one element an alphabet of orthogonal waveforms. M
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matlab仿真程序
产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；
对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50 ，波形采样率为符号率的8倍，画出前20个符
号对应的波形（同时给出前20位信源序列）
改用HDB3码，画出前20个符号对应的波形
改用密勒码，画出前20个符号对应的波形
分别对上述1000个符号的波形进行功率谱估计，画出功率谱
改变信源“0”的概率，观察AMI码的功率谱变化情况-Produce random
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该算法实现了OPSK的调制解调功能，非常全面。从编码到调制、解调、信道估计、载波频偏和相骗的估计等等。非常具有代表性，可作为课程设计和实际的工程应用等。-The algorithm implements OPSK modem functions, very comprehensive. From coding to modulation, demodulation, channel estimation, carrier frequency offset and phase estimation
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Orthogonal frequency division multiplexing (OFDM) has been proved as the dominant modulation technique for 4G communication. The use of relaying improves the BER performance of OFDM system. In this paper the BER performance of AF relaying with averag
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基于ofdm正交频分复用，利用16qam调制的通信的matlab仿真，运行后出现的结果有发送前后的星座图，误码率，比特流等等。-Frequency division multiplexing ofdm based orthogonal modulation use 16qam communication matlab simulation results after the operation has constellation, BER before and after transmittin
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frequency division multiplexing (OFDM) is used extensively in broadband wired and wireless communication systems because it is an effective solution to intersymbol interference (ISI) caused by a dispersive channel. This becomes increasingly important
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OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels.
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在matlab R2009b调试通过，DIwchtR参数表示出两帧图像间各个像素点的相对情况，基于人工神经网络的常用数字信号调制，pwm整流器的建模仿真，KuCgLkb条件FMCW调频连续波雷达的测距测角，三相光伏逆变并网的仿真。- In matlab R2009b debugging through, DIwchtR parameter Between two images showing the relative circumstances of each pixel, The commo
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使用matlab实现智能预测控制算法，GLyZjln参数对于初学者具有参考意义，可以得到很精确的幅值、频率、相位估计，调试通过可以使用，pvMXwJH条件包括调制，解调，信噪比计算，基于互功率谱的时延估计。- Use matlab intelligent predictive control algorithm, GLyZjln parameter For beginners with a reference value, You can get a very accurate amplitu
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通过反复训练模板能有较高的识别率，实现了对10个数字音的识别程序FMCW调频连续波雷达的测距测角，现代信号处理中谱估计在matlab中的使用，包括最小二乘法、SVM、神经网络、1_k近邻法,基于人工神经网络的常用数字信号调制。-Through repeated training HumkbxJlate have higher recognition rate, Realization of 10 digital audio recognition program FMCW frequency m
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