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- 采集一段音乐信号，绘制波形并观察其频谱.doc-Acquisition section of the music signal, waveform drawing and observing its spectrum. Doc
pam
- 滚降系数为0.5，载波频率fc=40/T.基带信号的频谱和幅度已调信号的频谱。-Roll-off factor of 0.5, the carrier frequency fc = 40/T. base-band signal spectrum and amplitude spectrum signals have been transferred.
randomSensing
- 随机感知的机会频谱接入，方法思路较简单-randomly sense channel of opportunistic spectrum access in cognitive radio
DFT
- 1)编写DFT子函数（计算并画出幅频特性），以后可调用。 2）N=32，M=32，128，256时，分析频率分辨率、频谱的光滑程度。 3）N=64，256，512时，分析频率分辨率和频谱的光滑程度。 -1) the preparation of DFT Functions (calculated and drawn amplitude-frequency characteristics), the future can be called. 2) N = 32, M = 32,128
bizhiSpectrumCorrect_Test
- 这个程序是幅值谱中校正频谱峰值的比值校*，可以自设定校正谱峰值的个数，比值校*还可以校正相位，校正的结果很准确-This procedure is correction of the amplitude spectrum of the ratio of the peak spectrum correction method, correction can be set from the number of spectral peaks, the ratio correction method
cr
- 认知无线电中频谱感知是其应用的基础和前提，文章是最新频谱感知的形式-Spectrum sensing in cognitive radio applications is the basis and premise, the article is the latest form of spectrum sensing
cr
- 频谱感知是认知无线电的一个重要前提，而能量检测法则是比较成熟的频谱感知算法。它可以有效地凡发现频谱孔，使得认知无线电与周围通信环境相适应-Spectrum sensing cognitive radio is an important prerequisite, and the law of energy detection of the spectrum is a more mature perception algorithm. Where it can be found in the sp
spreader
- 扩频通信中用伪随机码对信息数据进行扩频，实现频谱扩展！-Spread spectrum communication using pseudo-random code spreading of information data to realize the expansion of the spectrum!
digital_down_convertation
- 我对一个输入调制信号：采样率FS=1200K，中心频率F0=300K，带宽300K。输入信号为一个[样点数,2]的矩阵,即I,Q两路. 进行频谱搬移，分为I，Q分量两路进行矢量乘法，NCO的设置为FC=300K，t=样点数乘以1/FS， 乘完以后我的频谱上显示竟然信号带宽增加了300K，但是中心频率没有改变，请问各位朋友是哪儿出了问题？谢谢您的阅读和意见-Digital Down Converter for matlab realized, certain design speci
FFT
- 对任意输入信号进行FFT变换，并显示信号的频谱图-FFT transform