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asmaa atalaa


University of Houston

5 total contributions since 2015

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Question


Logarithm energy and Shannon entropy?
For best tree decomposition using wavelet packets, i have tried both Shannon and log energy entropy functions (on an image). I n...

1 year ago | 0 answers | 0

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Question


How to make the besttree image more clear in wavemenu GUI?
<</matlabcentral/answers/uploaded_files/107725/lena5levshannon.bmp>> In wavemenu Matlab GUI, when i perform wavelet packet-2...

1 year ago | 0 answers | 0

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answers

Question


How the null subcarriers are inserted in OFDM spectrum?
For example: For bandwidth 10MHz, fft size Nfft=1024 that needs a sampling rate Fs≥1024×15kHz=15.36MHz. The useful subcarrier...

2 years ago | 0 answers | 0

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Question


whty zero padded subcarriers inserted in the middle of the rows and before IFFT, and what is the relation between the number of added null subcarriers and the sampling frequency?
I have a matlab code for OFDM system, in this code the auther added a zero padded subcarriers before the IFFT stage, in the midd...

2 years ago | 0 answers | 0

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Question


how to get decompressed image for wcompress function ,and how to convert compressed image to binary?
i use wcompress to compress gray scale image.know i have the original image X and compressed image Xc i want to know how to get ...

4 years ago | 0 answers | 0

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