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2下载:
用matlab绘制线性调频信号的时域波形,同时对信号进行频谱分析,并考察采样频率以及信噪比对频谱分析的影响。-Matlab drawing with linear frequency modulation signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum
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ex9_1 脉冲信号调制
ex9_2 载波10MHz,带宽2MHz的线性调频信号及其频谱图
ex9_3 产生7位巴克码编码的二相码
ex9_4 产生7位巴克码和线性调频的混合调制信号
ex9_5 瑞利分布实现程序
ex9_6 瑞利分布+杂波
ex9_7 相关对数正态分布杂波
ex9_8 相关weibull分布杂波
ex9_9 相干相关K分布杂波
ex9_10 线性调频信号的数字化正交解调
ex9_11 雷达脉冲压缩处理
ex9_12 二相编码信号的脉压
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DIGITAL MODULATION TECHNIQUES
the material describes digital modulation techniques such as BINARY PHASE SHIFT KEYING (BPSK), DIFFERENTIAL PSK (DPSK), DIFFERENTIALLY-ENCODED PSK (DEPSK), QUADRATURE PSK (QPSK), QUADRATURE AMPLITUDE SHIFT KEYING (Q-AS
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模拟信号的数字化传输---增量调制系统
用SIMULINK建立简单增量调制系统的模型并进行
(3) 正弦信号
(4) 语音信号
的传输。
改变抽样频率和量化台阶大小,观察重建信号以及量化噪声信号的波形;对于语音信号主观评价声音质量的变化。
-Digitized analog signal transmission systems--- delta modulation delta modulation SIMULINK easy set up of the model s
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OFDM是一种新型的调制方式,称为正交频分复用。阐述了OFDM的原理、系统组成和
优良性质及其在数字电视传输和混合光纤电缆网(HF,C)中的应用。
-OFDM is a new type of modulation is called orthogonal frequency division multiplexing. OFDM on the principles of good composition and the nature of the system and its appl
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振幅调制,角度调制,频率调制等几个源程序,模拟通信系统-Amplitude modulation, angle modulation, frequency modulation, such as source code, analog communication systems
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不仅仅是闲了二进制二进制随机序列的频率调制,而且实现了其相应的解调过程,FSK完整程序-Not just free of the binary random sequence of binary frequency modulation, and the realization of the corresponding demodulation process, FSK complete procedures
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QPSK modulation system with recover loops-This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. Th
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基于分数阶傅里叶变换的线性调频信号二维波达方向估计-Fractional Fourier transform based on the linear frequency modulation signal is estimated that 2-D DOA
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载波调制的数字传输,有幅度,相位,频率的调制,以及正交调制和同步-Modulation of the digital transmission, a range, phase, frequency modulation, and quadrature modulation and synchronization
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a frequency modulation code for matlab
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二用户CDMA系统,信道为加性高斯信道,使用BPSK调制,15位M序列扩频,可以正确解扩解调。
输出为2用户的基带信号、扩频信号、PSK调制信号、解调信号的时域和频域特性,给出两个用户分别的误码率。 -Second, the user CDMA system, channel for the additive Gaussian channel, using BPSK modulation, 15 M Sequence Spread Spectrum, you can correct demo
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CP-OFDM的MATLAB源代码,简洁明了,非常适合初学者-Cyclical Prefix-Orthogonal Frequency Division Modulation;MATLAB source code;Brief and clear Better for the beganners.
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小学期的源程序
1.试编MATLAB程序。信号 sinc(10*t),-2<=t<=2
m(t)=
0,其它
用100hz的载波来产DSB信号并解调。完成下列工作:
画出已调信号;
求已调信号的频谱,并用图像表示。
画出解调信号;
求解调信号的频谱,并用图像表示。
2.信号
sinc2(100t),|t|≤t0
m(t)=
0, 其它
采用频率调制调制为1000HZ的载波。频偏常数为kf=50,t0=0.2
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Fm signal modulation and demodulation at the carrier frequency Fc (Hz). K is the frequency deviation.
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PERFORMANCE ANALYSIS OF OFDM
Orthogonal Frequency-Division Multiplexing (OFDM) — essentially identical to Coded OFDM
(COFDM) — is a digital multi-carrier modulation scheme, which uses a large number of closely-spaced
orthogonal sub-carriers. Ea
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基于Systemview的通信系统的仿真
主要是运用Systemview软件对二进制振幅键控(2ASK)系统、二进制移频键控(2FSK)系统、二进制移相键控(2PSK)系统以及二进制差分相位键控(2DPSK)系统进行设计,然后对设计的系统进行仿真,这其中分别包括它们的调制和解调系统。-Systemview based simulation of communication systems is the use of software Systemview binary amplitude s
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从回波中估计多普勒参数是合成孔径雷达运动补偿的关键。文中研究了多目标回波对参数估计的影响,从理论上推导了估计多普勒中心和调频率对回波的不同要求,并用两个指标举例分析了一段实测机载SAR数据,给出了实际应用中参数估计时选择回波的原则。-Doppler parameters estimation from radar echoes is a key step in SAR(Synthetic Aperture Radar}motion cornpensation.
This paper rese
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在调制频率足够小的前提下,不同的占空对应于不同的电压输出,而不同的电压对应不同的LED亮度,这样,我们可以通过改变占空比,就可以实现LED的渐亮渐灭控制了。-Small enough in frequency modulation, under the premise of representing different space corresponds to a different voltage output, the voltage difference between the diffe
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利用时-频方法实现调制信号的识别,并给出正确识别率-CLASSIFICATION OF MODULATION MODES
USING TIME-FREQUENCY METHODS
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