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Listing of Communication in Scripts

The note explains in detail how to apply the Matlab 2-dimensional FFT for filtering of two-dimensional signals, e.g. images. It is shown how to connect the output from fft2 to the actual Fourier transform of the signal, and in particular how transfer functions of simple filters may be coded.

  • Platform: Matlab, Scripts

This is an implementation of Huffman code. Content: - NORM2HUFF Huffman codification (encoder) - HUFF2NORM Huffman codification (decoder) - HUFFCODES2BIN Convert huffcodes to binary representation Max codeword length is 51 bits..

  • Platform: Matlab, Scripts

This file contains MATLAB functions, m-files, that do Huffman coding and arithmetic coding of integer (symbol) sequences. Complete coding may be done by calling an easy to use main program (or main function), where input argument is the sequences you want to compress and the output is the compressed bitstream, as a vector of bytes.

  • Platform: Matlab, Scripts

Static Huffman Coding and Decoding, and Adaptive Huffman Coding and Decoding for text compression.

  • Platform: Matlab, Scripts

format : [huffcodes,H,Hav,e]=huffmancoding(p,n) inputs: p is the probability of each alphabet symbol ( eg:p=[.3 .2 .2 .2 .06 .04] ) n is an integer that determines number of symbols at each frame (default:n=1) outputs: huffcodes: huffmancodes H: source entropy Hav: average entropy for coding e: codding efficiency.

  • Platform: Matlab, Scripts
  • HWT_PS
  • License: Freeware
  • Price: 0.00
  • Rating

the current version includes: hwt.m: harmonic wavelet transform whwt:windowed harmonic wavelet transform Gabor_wt: Gabor wavlet transform test_simple.m: phase estimation on needed frequency band by windowed harmonic, Gabor methods, with comparison to Hilbert transform followed by the zero-phase-shift FIR filter method (using eegfilt.

  • Publisher: Li Duan
  • Date: 18-04-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

Cascade of 5 chua's systems and application in secure communications.

  • Platform: Matlab, Scripts
  • i-trax
  • License: Freeware
  • Price: 0.00
  • Rating

Today there are many ways to communicate with friends or business partners while you are on the road. Your mobile device is capable of sending SMS and Email, even ICQ can be run. But all these possibilities have different disadvantages. They are expensive, not continuously available and complicated to use.

  • Platform: PHP, Scripts

Today there are many ways to communicate with friends or business partners while you are on the road. Your mobile device is capable of sending SMS and Email, even ICQ can be run. But all these possibilities have different disadvantages. They are expensive, not continuously available and complicated to use.

  • Platform: PHP, Scripts

This file permits the calculation of the path loss in g Ibraim and Parsons modeland Parsons model..

  • Publisher: Joao Carmo
  • Date: 20-04-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

Features: - End-to-end 802.11a physical layer - All mandatory and optional data rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mb/s - BPSK, QPSK, 16-QAM, 64-QAM modulations - Forward error correction coding (convolutional; code rates 1/2, 2/3, 3/4) - OFDM transmission: 52 subcarriers, 4 pilots, 64-pt FFTs, circular prefix - Data interleaving - PLCP preamble (modeled as 2x2 long training sequences) - Receiver equalization - Viterbi decoding - Data rates selectable on-the-fly - Adaptive modulation demo over dispersive multipath fading channel Instructions: 1.

  • Platform: Matlab, Scripts

See the paper describing the model at: Wireless LAN Comes of Age: Undersanding the IEEE 802.11n Amendment by Thomas Paul and Tokunbo Ogunfunmi, IEEE Circuits and Systems Magazine, First quarter 2008, pp. 28-54. 2008. See the paper describing the model in IEEE Xplore at http://0-ieeexplore.

  • Platform: Matlab, Scripts

Image compression using wavelet transform *wavelet transform give better information about non-stationary signals in time domain.

  • Platform: Matlab, Scripts

Preprocessing of remote sensing images.

  • Publisher: ma yuan
  • Date: 14-03-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

The features are: 1) Display only Red, Green or Blue image color 2) Display luma (y) component 3) Graphic equalizer 4) Quantization from 8bit (per pixel xomponent) to 3 bit 5) JPG compression with interactive mask There is a video-tutorial in English inside! (you can also watch it at: http://www.

  • Platform: Matlab, Scripts

The Image Processing toolbox toolbox is lacking a key feature I need, namely the support of all data types. Quick list of the source included: imhist_thresh.cpp: Generate histogram from data, # of bins based on unique values. imsmarthist_thresh.cpp: equalize data based on histogram imsmartstd_thresh.

  • Platform: Matlab, Scripts

IMAGE processing using guide MATLAB programe.

  • Platform: Matlab, Scripts

This program segments and extracts objects from an image..

  • Platform: Matlab, Scripts

From the paper : Nock, Richard and Nielsen, Frank 2004. Statistical Region Merging. IEEE Trans. Pattern Anal. Mach. Intell. 26, 11 (Nov. 2004), 1452-1458. It uses an a disjoint-sets data structure with a union-find strategy: http://en.wikipedia.org/wiki/Disjoint-set_data_structure Just run srmdemo.

  • Platform: Matlab, Scripts

Syntax: >> imagescnan(Z) % Uncolored NaNs >> imagescnan(Z,'k') % Colored IMAGESC is a good option when the user doesn't like the interpolating behaviour of SURF or PCOLOR, because EVERY element is drawn as a single pixel CENTERED with the axis value.

  • Platform: Matlab, Scripts

IMP is a set of PHP scripts that implement an IMAP based webmail system. Assuming you have an account on a server that supports IMAP, you can use an installation of IMP to check your mail from anywhere that you have web access. It is written in PHP and provides webmail access to IMAP and POP3 accounts.

  • Platform: PHP, Scripts

IMP is a set of PHP scripts that implement an IMAP based webmail system. Assuming you have an account on a server that supports IMAP, you can use an installation of IMP to check your mail from anywhere that you have web access. It is written in PHP and provides webmail access to IMAP and POP3 accounts.

  • Platform: PHP, Scripts

Computes BER v EbNo curve for convolutional encoding / soft decision Viterbi decoding scheme assuming BPSK. Brute force Monte Carlo approach is unsatisfactory (takes too long) to find the BER curve. The computation uses a quasi-analytic (QA) technique that relies on the estimation (approximate one) of the information-bits Weight Enumerating Function (WEF) using a simulation of the convolutional encoder.

  • Publisher: B Gremont
  • Date: 19-01-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

this program evaluates the impedance and phase velocity in the shielded microstrip transmission line. program helps to view the effect of dimension of shielding used..

  • Platform: Matlab, Scripts

In Radars, range resolution and long range of operation are the two important aspects. Long range operation means the maximum distance over which radar can detect the targets. The radar transmit modulated pulses to take the advantages of better processing gain and resolution of these waveforms are compared to continuous wave pulse.

  • Publisher: siddhu
  • Date: 24-03-2013
  • Size: 31 KB
  • Platform: Matlab, Scripts

An Advanced Simple Configuration Delta-Sigma Modulation Three-Phase Inverter Implementing Space Voltage Vector Approach. To miniaturize and enhance the performance of a variety type of switching mode inverters and converters, researchers have developed with great efforts so far.

  • Platform: Matlab, Scripts

This function can be used for adding different kind of impulse noises (i.e. Salt & Pepper noise and Random-value impulse noise) to image. Salt & Pepper Noise values are 0 or 255 but random-value impulse noise values vary from 0 to 255. website : http://kannan.

  • Platform: Matlab, Scripts

Main_Sound is the main program. See read_me.txt for more details..

  • Platform: Matlab, Scripts

It contains the solution to every problem of the 2nd chapter. I'll keep posting more solved problems as soon as I can..

  • Platform: Matlab, Scripts

It contains answers to selected problems from Ingle & Proakis "Digital Signal Processing Using Matlab v4.0" Chapter 3. I hope they're useful for you..

  • Platform: Matlab, Scripts

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