Software Listing of Author : "Sanjeet Kumar"

This m-file finds and plots the autocorrelation and crosscorrelation function(ACF and CCF) of generated Gold codes of length 31.Crosscorrelations are three valued.

  • Platform: Matlab, Scripts

This m-file finds the periodic ACF of all the m-sequences of length 31.In this program m-sequences of length 31 are generated and its periodic Autocorrelation function is plotted.

  • Platform: Matlab, Scripts

This m-file finds the bit error rate performance of BPSK DS-SS system over (i) AWGN channel and (ii) Slow Rayleigh fading channel corrupted by AWGN. Compare the performance with simple BPSK system. In this simulation I have used two functions.So to see the result open all the files and then run ber_performance file.

  • Platform: Matlab, Scripts

A uniform random number generator is used to generate the binary information sequence from the binary data source. The sequence of '0's and '1's is mapped into sequence of +E and E where E represents the signal energy. E may be normalized to unity The Gaussian noise generator is used to generate the sequence of '0' mean and variance dcDo2 Gaussian random numbers. The detector compares the random variable 'r' with the threshold of '0'. If r > 0, the decision is made that the transmitted bit is '0'. If r < 0, the decision is made that the transmitted bit is '1'. The output of the detector is compared with the transmitted sequence of information bits and the bit errors are counted.

  • Platform: Matlab, Scripts

In this file there are two m-files.One is function and other is program. So during running the program save both file in same folder.First open the function rect ,then and run the ber_QAM file. You will get the required result. Here simulation is performed for 10,000 symbols in the presence of additive Gaussian noise at different values of SNR.

  • Platform: Matlab, Scripts

This program performs a Monte Carlo simulation of a coherent QPSK communication system and plot the error probability performance over additive whit Gaussian noise channel. The detection is based on correlation metric. Simulation is performed for 10,000 bits and measurements are made accordingly.

  • Platform: Matlab, Scripts

This m-fine plots the transmitted and received signal of simple DS-SS modulation.This uses BPSK modulation for data

  • Platform: Matlab, Scripts

This program generates BPSK signal waveforms and plot the power spectrum of unfiltered BPSK.

  • Platform: Matlab, Scripts

This program generates filtered BPSK with proper pulse shaping filters such as ideal Nyquist, Raised cosine, Square root raised cosine and Gaussian filters. Determine the power spectrum of filtered BPSK signals.

  • Platform: Matlab, Scripts

Write a program to generate QPSK constant envelope signal waveforms(a)for given rectangular pulse shape. Select the carrier frequency as fc = 6/T. (b)Repeat the experiment given that the signal shape is g (t)= dldu(1-cos2dcdet/T) , 0 d-OC-TA t d-OC-TAT 0 , otherwise

  • Platform: Matlab, Scripts

This m-file generate Gold Sequences of length 31 by taking the modulo-2 sum of two m-sequence generators.

  • Platform: Matlab, Scripts

This m-file generates all the m-sequences of length 31.To generate the m-sequence of length 31 we use Primitive polynomial of degree 5.There are three primitive polynomial of degree 5, so there will be 3 different m-sequences of length 31.

  • Platform: Matlab, Scripts

This m-file plots the transmitted signal of slow frequency hopped spread spectrum.This uses one symbol transmission per frequency hop.

  • Platform: Matlab, Scripts

The script uses only one transmission symbol per frequency hop.

  • Platform: Matlab, Scripts
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