Frequency modulation

The fi rst public broadcast radio services introduced in the 1920s were in
the long-wave (LW) and then medium-wave (MW) band, using amplitude
modulation (AM) and limited by the technology of the time. Historically,
long- and medium-wave AM broadcasting has used restricted bandwidth,
approximately 4 kHz, which allows intelligible speech but is not very good
for music broadcasting, since music signals are typically 14 20 kHz in bandwidth.
Amplitude modulation also suffers from impul ....etc

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about multi device control system using frequency modulation in to the right box for getting free material and support from us/dedicated premium members..
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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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dear sir,

i want to automatic railway gate controller using frequency

modulation techniques in iee format. please request you to send the iee

format of automatic railway gate controller using frequency modulation

techniques.

thank you! ....etc

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

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A High Data Rate Frequency Hopping Modulation Scheme
Theme:ECE/Digital Communications

Submited By:
Hemanth Patnala
R.V.Seshu Kumar
Sir C.R.R. College Of Engineering,
Eluru-534002
ABSTRACT
There is a need to select the 'first step up' modulation scheme for higher data rate frequency hopping systems. This is seen as one step in a longer journey where considerably higher data rates are used. In order to make this progression viable, the first step should be taken with a well proven modulation scheme. An ....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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METHODS OF FREQUENCY MODULATION



METHODS OF FREQUENCY MODULATION. - The circuit shown earlier in figure 2-6 and the discussion in previous paragraphs were for illustrative purposes only. In reality, such a circuit would not be practical. However, the basic principle involved (the change in reactance of an oscillator circuit in accordance with the modulating voltage) constitutes one of the methods of developing a frequency-modulated wave.

Reactance-Tube Modulation. - In ....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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