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butxiaobo
近红外光谱小波变换预处理方法，能将信号分解成一系列小波函数的叠加，这些小波函数都是由一个亩小波函数平移和伸缩得到的。(Near infrared spectra pretreatment method, wavelet transform signal can be decomposed into a series of wavelet function, the wavelet function is a function by a mu wavelet translation and scaling.
)
- 2013-10-03 23:42:50下载
- 积分：1
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signalprocess
张贤达 现代信号处理第二版 信号处理权威书籍(Zhang Xian of modern signal processing second edition)
- 2011-12-15 10:42:23下载
- 积分：1
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Single-phase-inverter
单相逆变器并网控制和有源频率偏移孤岛检测(Single-phase inverter and network control and active islanding detection of frequency offset)
- 2011-12-28 14:18:32下载
- 积分：1
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horn_antenna
FDTD仿真喇叭天线，能观察得到其电场在自由空间随时间的分布情况。(FDTD method is a time domain analysis.Here we first we design a wave-guide and there after we just increase its broad side.Our aim is to this simulation is plotting its electric field response with time and how will it response in outside free space.
Here we just take 170 time steps one who can interested in antenna designing they can also plot the radiation pattern of this HORN antenna.Just take the field in the outside the mouth of HORN antenna and there do the simple formula to near filed far field transfer and measure it at your band of antenna.Best of LUCK all of you.)
- 2014-01-12 20:14:08下载
- 积分：1
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dragon_curve
用matlab编写的龙曲线源程序，可以供大家参考(prepared using Matlab curve source of the Dragon, for your reference)
- 2006-10-20 18:42:25下载
- 积分：1
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Network-intrusion
kohonen网络的聚类算法,网络入侵聚类,matlab的经典算法(
kohonen网络的聚类算法,网络入侵聚类,matlab的经典算法
Clustering algorithm of Kohonen network, the network intrusion clustering, matlab algorithm
)
- 2013-10-19 23:51:21下载
- 积分：1
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main
预编码主函数。在通信系统中知道CSI情况下，预编码。(English Description)
- 2013-05-01 22:02:23下载
- 积分：1
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Fading-channel-simulation
衰落信道仿真
function r = rayleigh( fd, fs, Ns )
r = rayleigh(fd,fs,N)
A Rayleigh fading simulator based on Clarke s Model
Creates a Rayleigh random process with PSD determined
by the vehicle s speed.
INPUTS:
fd = doppler frequency
set fd = v*cos(theta)/lambda
v = velocity (meters per second)
lambda = carrier wavelength (meters)
theta = angle w/ respect to tangent (radians).
fs = sample frequency (Samples per second)
Ns = number of samples of the Rayleigh fading
process to produce
OUTPUTS:
r = row vector containing Ns samples of the Rayleigh
fading process
Author: Matthew C. Valenti
Mobile and Portable Radio Research Group
Virginia Tech
For Academic Use Only
(Fading channel simulation)
- 2012-04-19 20:13:22下载
- 积分：1
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WIMAXsource
WIMAX_WZ_withencoding:信道估计，相位噪声补偿，频偏估计，编解码都有
WIMAX_WZ_withoutencoding：在上面的工程基础上，去掉编解码部分
WIMAX_WZ_withoutprocessing：在上面的工程基础上，再去掉相位噪声补偿，频偏估计
WIMAX_WZ_withoutprocessing2：在上面的工程基础上，改用新的前导和导频联合信道估计方案,参考文档《基于802_16d标准的OFDM信道估计技术的研究与实现.kdh》
因为白噪声信道仿真只能体现QPSK调制和RS-CC编码的性能，需要仿真SNR可控的SUI信道，来估计信道均衡的性能。
在多普勒频偏fd>100Hz时，联合信道估计性能才比前导估计强，否则前导估计性能更优。对于600MHz中心频率，要求收发机相对运动速度大于180km/h，这种情况出现的概率不大(WIMAX_WZ_withencoding: channel estimation, phase noise compensation, frequency estimation, the codec has WIMAX_WZ_withoutencoding: the project on the basis of the above, remove the codec section WIMAX_WZ_withoutprocessing: the project on the basis of the above, then remove the phase noise compensation, offset estimation WIMAX_WZ_withoutprocessing2: In the project on the basis of the above, use the new leader and pilot joint channel estimation scheme, the document " Standards-based 802_16d OFDM channel estimation and implementation of technology .kdh" because white noise channel simulation only reflects the QPSK modulation and RS-CC coding performance requires simulation SNR controllable SUI channel, to estimate the performance of channel equalization. When Doppler shift fd> 100Hz, joint channel estimation performance was stronger than the leading estimate, otherwise better estimation performance leader. For 600MHz center frequency transceiver requirements relative velocity )
- 2015-03-25 09:14:02下载
- 积分：1
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Wavelet_Phase_Coherence
小波相位相干函数，用于计算采集工程信号的相干量(Wavelet PhaseCoherence )
- 2015-10-21 19:17:28下载
- 积分：1
