dear sir,

i want to automatic railway gate controller using frequency

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

format of automatic railway gate controller using frequency modulation

techniques.

thank you!


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Remote device control using Radio Frequency


The project compares the communication of control signals using radio frequency
and Infra Red Rays. The STR is ideal for short-range remote control applications where
cost is a primary concern. The receiver module requires no external RF components
except for the antenna. It generates virtually no emissions, making FCC and ETSI
approvals easy. The super-regenerative design exhibits exceptional sensitivity at a very
low cost. A SAW filte ....etc

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Introduction
The basic Frequency Modulation communications system has:
1) Transmitter, which is the sub-system that takes the information signal and processes it prior to transmission. The transmitter modulates the information onto a carrier signal and broadcasts it over the channel
2) Channel: The medium which transports the modulated signal to the receiver. In this project, LED will be connected to FM transmitter end. Signals then will be picked up by the Photo Detector diode right before the FM Receiver
3) ....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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i need this project description, working principle, circuit diagram and ppt ....etc

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Abstract
Two major factors that limit the throughput inmulti-hop wireless networks are the unreliability of wirelesstransmissions and co-channel interference. One promising techniquethat combats lossy wireless transmissions is opportunisticrouting (OR). OR involves multiple forwarding candidates torelay packets by taking advantage of the broadcast nature andspacial diversity of the wireless medium. Furthermore, recentadvances in multi-radio multi-channel transmission technologyallows more concurrent transmissions in the network, and sh ....etc

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PRESENTED BY:
N. RAMAKRISHNA REDDY
DINESH REDDY
G. SPURTHI REDDY
MANASA


MICROCONTROLLER BASED MULTIPLE DEVICE CONTROL BASED ON INPUT FREQUENCY.
DESCRIPTION:
The 230v ac supply is down converted into 12v by ac transformer. The transformer output is rectified by bridge rectifier and converts into pulsating dc. This voltage is given to the filter. The filter removes the unwanted ripple components and outp ....etc

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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 modulatio ....etc

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Abstract.
In this paper a novel modular digital controlalgorithm for multi level inverters is introduced and discussed.This algorithm is essentially based on the duty cycle expressionand allows a great simplification, because of its modularity andits simple implementation. The algorithm is particularly suitablefor the Multi Point Clamped (MPC) inverters with no constrainton the number of the voltage levels and results faster than themost recent solutions proposed in literature.The modulation techniques considered in the paper are the ....etc

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