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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 each symbol di by the Barker code. (Please refer to p. 17 of the slides.) Use “stem” to plot the signals before
spreading and after spreading
- 2010-08-11 04:53:11下载
- 积分：1
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FFTcomparewithLMS_PHDcomparewithMSIC
FFT横向滤波算法与最小二乘算法LMS的比较，以及PHD特征分解与多信号分解MUSIC的的比较(FFT horizontal filtering algorithm with least squares comparison of LMS, as well as the PHD characteristics of decomposition and multi-signal comparison of decomposition MUSIC)
- 2007-12-26 21:33:55下载
- 积分：1
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GA
说明： 改进遗传算法程序，用来优化参数的选择，很好用的方法(GA)
- 2010-12-13 12:51:55下载
- 积分：1
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MATLAB
本文以MATLAB/Simulink为工具,从基础的机电动力系统分析出发,通过大量的仿真实验,总结出机电系统数字仿真的一般方法和基本规范。各种电机matlab仿真。(In this paper, MATLAB/Simulink as a tool, from basic mechanical and electrical power system analysis, the adoption of a large number of simulation experiments, electro-mechanical systems summed up the general method of numerical simulation and the basic norms. Matlab simulation of various motor.)
- 2009-07-07 13:27:58下载
- 积分：1
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mmread
mmread reads virtually any media file. If Windows Media Play can play
it, so should mmread. It uses the Window s DirectX infrastructure to
％ render the media, so other OSs are out of luck.(mmread reads virtually any media file. If W for Windows Media Player can play it. so should mmread. It uses the DirectX in Window s GE% to render the media, so other OSs are out of luck.)
- 2006-05-30 12:00:49下载
- 积分：1
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filtering
高通滤波器 低通滤波器 数字滤波器 语句较短 (High-pass filter low pass filter digital filter shorter sentence)
- 2014-11-25 18:36:39下载
- 积分：1
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matlab-vrp
车辆路径问题中用遗传算法实现matlab程序 。(The vehicle routing problem matlab genetic algorithm. . . .)
- 2013-04-08 09:42:35下载
- 积分：1
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Filter-implementation-in-matlab
its a matlab discription of varius digitl filers both in special and frequency domain. very useful for beginners.
- 2013-10-18 13:29:52下载
- 积分：1
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melfilter.m
mel to frequency conversion
- 2012-10-18 02:24:33下载
- 积分：1
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Filtro-3-vias
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. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.
- 2015-02-03 08:10:37下载
- 积分：1
