Timing recovery is a critical aspect of Digital Communications Receivers. This model uses a fractional delay implemented with a Farrow filter to create a symbol rate timing recovery subsystem.
This is combined with a decision aided Carrier Recovery PLL. For testing, a transmitter with continuosly variable carrier frequency error and symbol rate error is included. References are included in the model.
ofdm symbol generation of QPSK subsymbols for testing PAPR reduction algorithms.
Insert symbol dialog for Word Processor Applications. It is similar to Microsoft Word uses.Max's Flat Component Pack should be installed.
Current direct sequence code division multiple access (DS-CDMA) system suffer from Multiple access interference (MAI) and Inter symbol interference (ISI) due to the frequency selective channel. This interference can be avoided by use of Adaptive...
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
Lookup a chemical element based on Symbol, name, or atomic number, and get back the symbol, name, atomic number or atomic weight.
name = elements('Symbol', 'Fe', 'name');
mass = elements('atomic_number', 26,...
Wigner3j( J123, M123) calculates the Wigner 3j-symbol according to Racah formula.
The Wigner 3j symbol is useful for multiplication of Spherical Harmonics (and their generalizations) and for addition of angular momentum.
The are related...
Evaluates Racah formula for Wigner 3-j symbol using the Symbolic Toolbox
The objective is to demonstrate character/ symbol frequency distribution analysis (reference to the English language) on 2 vintage ciphers, namely Caesar cipher (a mono-alphabetic substitution cipher) and the Vigenere cipher (a poly-alphabetic...
This is an implementation of the Levi-Civita symbol, also known as the permutation tensor, or "epsilon i j k". The function supports not just three but two, four, five etcetera indices. It is fairly fast. Most of the file is a test...
Created by Claudio Campo in 2010
SCREENSIZE sets figure position and dimension expressed in percentage of the screen:
xin=x coordinate of south-west corner of the...
this is just a mesh program which creates a figure similar to infinite symbol.
x-y scatter plot with plot symbol size proportional to magnitude of z. Scale factor enables symbol size continuity when overplotting with subsequent datasets using a different color.
Shannon entropy of a string indicates minimum average number of bits per symbol required for encoding (compressing) the string.
This script replaces single or multiple spaces in a text box entry with plus ( ) symbols.
It is useful if your server's form processing or database management program requires this type of encrypted format.
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...
1.random input data generation
4.ofdm signal generation
You can enter the probability of occurance of a group of symbols for the program and you will get the Fano code for each symbol. This is my first time to attach files to this category and hope that it will be useful for all.
This script is intended to illustrate the concepts of eyediagramm, constellation, ISI and to understand the effects of additive noise power, channel frequency band restriction, number of possible states within a symbol period, affecting the...
This is an accelerated PSO (APSO), developed by Xin-She Yang in 2008. APSO does not use velocities or any inertia parameter.
A full program for solving nonlinear constrained optimization problem (welded beam design as an example) is provided,...