HELLO i am NAVATHEJ doing MTECH in rnsit banglore and i am doing mini project on qpsk plz provide the page link to download about this project ....etc

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The following code is for simulating non-coherent DPSK for M=2,4,8,16,32 (bits per symbol).

This code is extended from the examples available in the ebook.

% Iman Bagheri / December 2013 / [email protected]
% Simple Matlab/Octave code for non-coherent demodulation of
% differentially encoded phase shift keying (DPSK)
clc;clear all;close all;

% Input Fields
N = 1e6; % number of bits or symbols
EbN0dB = 6:2:16; % multiple Eb/N0 values
rangeofM = ; % DPSK constellation
colors=;
%

col ....etc

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GMSK:
Gaussian Filtered Minimum Shift Keying
Gina Colangelo
EE194 - SDR
Topics
Background
Minimum Shift Keying (MSK)
Gaussian Filtering
Spectral Efficiency GMSK vs. MSK
Common Applications
Introduction
Digital modulation schemes are becoming increasingly important in wireless communication systems.
Using an unfiltered binary data stream to modulate an RF carrier will produce an RF spectrum of considerable bandwidth.
Techniques have been developed to minimize this bandwidth, improve spectral performance, and ease detection.
Back ....etc

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The bit error rate (BER) expressions of 16-phase shifting (PSK) and 16-quadrature amplitude modulation (QAM) are obtained analytically in the presence of a phase error. By averaging over the phase error statistics, the performance penalty can be analyzed analytically as a function of the phase error variance. Phase error variations leading to a signal-to-noise ratio of 1 dB per bit penalty at BER = 10 (-4) have been found 8.7 x 10 (-2) rad (2), 1.2 x Rad (2), 2.4 x 10 (-3) rad (2), 6.0 x 10 (-4) rad (2) and 2.3 x 10 (-3) rad (2) ) For binary, q ....etc

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can you help me by providing matlab code for turbo coding of qpsk and qam?? ....etc

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Amplitude-shift keying (ASK) is a form of amplitude modulation that represents digital data as variations in the amplitude of a carrier wave. In an ASK system, the binary symbol 1 is represented by transmitting a fixed-amplitude carrier wave and fixed frequency for a bit duration of T seconds. If the signal value is 1 then the carrier signal will be transmitted; otherwise, a signal value of 0 will be transmitted.

Any digital modulation scheme uses a finite number of distinct signals to represent digital data. ASK uses a finite number of ampl ....etc

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To get full information or details of frequency modulation and demodulation ppt please have a look on the pages

https://en.wikipedia?title=Frequency_modulation

http://radio-electronicsinfo/rf-technology-design/fm-reception/fm-demodulation-detection-overview.php

http://ece.umd.edu/ tretter/commlab/c6713slides/ch8.pdf

if you again feel trouble on frequency modulation and demodulation ppt please reply in that page and ask specific fields in frequency modulation and demodulation ppt ....etc

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Design a digital transmission system using PSK for the transmission and reception of
text messages. ....etc

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my help me..give me some suggestion on delta modulation & demodulation..send me some ppt on dis topic. ....etc

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10 viva questions and answers about amplitude shift keying

Amplitude-shift keying (ASK) is a form of amplitude modulation that represents digital data as variations in the amplitude of a carrier wave. In an ASK system, the binary symbol 1 is represented by transmitting a fixed-amplitude carrier wave and fixed frequency for a bit duration of T seconds. If the signal value is 1 then the carrier signal will be transmitted; otherwise, a signal value of 0 will be transmitted.

Any digital modulation scheme uses a finite number of distinct signals t ....etc

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