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- 把地理区域分成一个个小区，蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道，每个小区分配一组信道。使用频分双工（FDD）。在小区间进行频率利用，N个小区构成一个簇，簇间进行频率复用。定义了传播特性（信道参数）以及同频小区的位置。信道的参数包括：小区半径，路径损耗指数，以分贝为单位的对数正态阴影的标准差，基站发射功率级，移动台发射功率级，每个小区的扇区数，扇区化天线的正反向比，要仿真的瞬时位置的组数，同频干扰阈值。-To a geographical area is divided int
Prob318
- P3.18. An analog signal xa(t) = sin (100πt) is sampled using the following sampling intervals. In each case plot the spectrum of the resulting discrete-time signal. Ts= 0.1 ms, Ts= 1 ms, Ts = 0.01 Sec
QPSK_Waveform
- This program generates BPSK signal waveforms and plot the power spectrum of unfiltered BPSK.
BPSK_generation
- This program generates BPSK signal waveforms and plot the power spectrum of unfiltered BPSK.
Spectrum
- 连续阻尼物体运动的频谱，并画出了频谱曲线-Continuous spectrum damping the movement of objects, and plot the spectrum curve
scalogram
- Fs = 100000 t = 0:1/Fs:.00296 x = 1-cos(4*pi*t) cos(2*pi*t*200) h = spectrum.welch Instantiate a welch object. psd(h,x, Fs ,Fs) Plot the one-sided PSD -Fs = 100000 t = 0:1/Fs:.00296 x = 1-cos(4*pi*t) cos(2*pi*t*200) h = spectrum.
AM
- A single program which plot Spectrum of AM modulation
Direct_sequence_spread_spectrum
- Assume that a direct sequence spread spectrum system uses the Barker code of length 7 (N=7) as its spreading sequence. a. Randomly generate 8 symbols (d0~d7) from the set {+1,-1}. b. If each chip of the Barker code is denoted as cj, j=0~6, spread
multi_scale_edgedetect
- 利用小波变化对信号的边缘进行检测，方法使通过多尺度积对信号功率谱进行变化-Changes in the signal using the wavelet edge detection method to plot the signal through the multi-scale changes in the power spectrum
LFM
- matlab函数“LFM.m”计算和画出LFM波形的幅度谱。-matlab function " LFM.m" calculate and plot the amplitude spectrum of LFM.
cbl
- 利用fft()进行快速傅立叶变换，得到频谱，画出正弦函数及其频谱 找出频谱中使得Y轴取最大值时的估计频率记为ft 加入白噪声，绘出信噪比和均方误差的关系曲线 - using fft () for fast Fourier transformation, spectrum, to draw the sine function and its spectrum find the spectrum
jkspa
- This is to plot frequency spectrum using Welch method.
Chapter-3---Sampling-Quantization
- read audio signal and plot the spectrum
Chapter-3---Sampling-Quantization-2
- sampling of audio signal and plot the spectrum after sampling
The-FIR-filter-design
- （附带有文档，文档中有方案，有程序有结果，设计完后对一段语音进行处理）给定滤波器的规一化性能指标（参考指标,实际中依据每个同学所叠加噪声情况而定）通带截止频率wp=0.25*pi。 采用窗函数法设计低通、高通、带通型FIR滤波器，对叠加噪声前后的语音信号进行滤波处理，绘出滤波器的频域响应，绘出滤波后信号的时域波形和频谱，并对滤波前后的信号进行对比，分析信号的变化；在相同的性能指标下比较各方法的滤波效果，并从理论上进行分析-(With the document, document, program
Interpolator-of-polyphase-filter
- 代码用两种方法设计了一个基于多相滤波的内插器，低通滤波器采用128阶凯撒窗，内插倍数32，并且给定信号范围，验证了内插器的正确性，画出了内插前后信号的频谱。-The code design the interpolator based on polyphase filter using two methods.The low pass filter is 128 order Caesar window and interpolation multiple is 32.I give the ran
ni5640R-Analog-Input-and-Output
- 基于5641r的FPGA模拟输入输出，并对输入信号作谱估计-ni5641r analog input and ouput base FPGA,and plot the spectrum estimation of input signal
dtft
- DTFT plot the spectrum of a sinusoidal signal
Sea surface_3D
- PLot a 3D surface using random generation of surface And plot the spectrum of sea surface called JONSWAP
run_plot_surface_wve_spectrum
- Run the main function to plot the spectrum of wave of surface such as ocean