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数字调制信号的产生与识别。产生数字调制信号，并汇出图像，比较直观。
通过分析解调的幅度、频率、相位来判断该信号的调制类型。-Generation and identification of digital modulation signals. Generates a digital modulation signal, and export the image, intuitive.
To determine the modulation type of the signal thro
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matlab code for slm in the ofdm system .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 parall
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Predictive direct power control (P-DPC) applied
to voltage source pulse-width-modulation (PWM) rectifier was
introduced in this paper. Based on the model of power
prediction, voltage vectors were selected according to
minimizing power errors
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To improve the performance of short-range wireless communications, channel quality must
be improved by avoiding interference and multi-path fading. Frequency hopping spread
spectrum (FHSS) is a transmission technique where the carrier hops freque
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通信系统中数字调制信号分析 包括时域、频域、误码率、信噪比、谱分析、加性高斯白噪声，实现一个完整的系统分析的MATLAB程序-Communication systems digital modulation signal analysis including time domain, frequency domain, bit error rate, SNR, spectrum analysis, additive white Gaussian noise, to achieve a compl
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Long-Term Evolution (LTE) is a new standard speci ed by 3GPP for fourth generation (4G)
wireless communications. LTE provides high spectral eciency, high peak data rates, short
round trip time, and frequency
exibility. It relies on the follow
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双边幅度调制与解调
对频率为30Hz的余弦信号进行双边带幅度调制，载波频率为300Hz，并采用相干解调法实现解调-Bilateral amplitude modulation and demodulation cosine signal of 30Hz frequency double sideband amplitude modulation, carrier frequency is 300Hz, and the use of law to achieve coherent demo
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this source is for analsys of mainlobe redution in modulation of linear frequency modulated wave with barker code and non linear frequency modulated wave
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方波，正弦波，三角波可调频调幅多功能信号发生器-Fang Bo, sine wave, triangle wave, multi function signal generator frequency and amplitude modulation
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用脉冲宽度按正弦规律变化而和正弦波等效的PWM波形即SPWM波形控制逆变电路中开关器件的通断，使其输出的脉冲电压的面积与所希望输出的正弦波在相应区间内的面积相等，通过改变调制波的频率和幅值则可调节逆变电路输出电压的频率和幅值-With pulse width according to the sine law of change and equivalent sine wave inverter PWM waveform of SPWM waveform control circuit swit
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OFDM/OQAM调制解调源码，另外增加了上变频部分，中心频率30KHz-OFDM/OQAM modulation and demodulation ，also include up frequency to 30Khz
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通信原理课程设计DSB调制MATLAB源程序-Amplitude modulation of a carrier wave normally results in two mirror-image sidebands. The signal components above the carrier frequency constitute the upper sideband (USB), and those below the carrier frequency constitute the
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matlab实现了OFDM功能，ACO-OFDM可以在可见光中使用。-Orthogonal frequency division multiplexing (OFDM)
is a modulation technique which is now used in most new and
emerging broadband wired and wireless communication systems because it is an effective solution to in
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提出了一种多迸制频移键控(M娲K)信号调制分类及解调方法，选取截获接收机输出的MFSK信
号的时频脊线作为分类特征，利用无监督聚类算法求取最佳聚类数M．利用时频脊线的Ham：小波变换
估计码元宽度，并且利用对应最佳聚类数的聚类中心确定抽判门限，通过对时频脊线抽样判决，实现了
MFSK信号的解调．理论分析和对实际信号的处理结果证明了此算法的可行性．-new algorithm is proposed for elassillcation and demodulation of MFSK
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使用VerilogHDL语言加上IP核产生PWM调制波，占空比和频率可调。-The PWM modulation wave, duty cycle and frequency can be adjusted by using VerilogHDL language and IP kernel..
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This firmware works for all frequency and modulation combinations supported by the SX1239. Ensure that the frequency and modulation settings in sx1239_config.h match your hardware configuration.
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在MATLAB上实现GMSK/GFSK调制解调，能输出频率轨迹和相位轨迹图，以及调制解调的频谱图-Achieve GMSK/GFSK modem on MATLAB, the output frequency can track and phase trajectories, and spectrum modulation and demodulation
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Computing the SNR loss due to frequency offset in OFDM modulation
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1.先运行2_28_1再运行3_3_1判断PSK调制方式，得到精确频偏以及符号速率（这里只针对QPSK）
2.根据精确载频以及符号速率运行3_3_2进行匹配滤波
3. 3_3_2进行QPSK解调
4. 未给定信号-1. First Run 2_28_1 run 3_3_1 judge PSK modulation scheme to obtain accurate frequency offset and symbol rate (here only for QPSK) 2. dep
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按照CMMB标准做的发射端各模块函数,包括RS编码、交织、星座映射、OFDM频域信号形成、OFDM调制等-several module functions programmed according to CMMB standard，include RS coding、interleave、map constellation、OFDM frequency signal generate、OFDM modulation and so on
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