PPT Pres for SP

7/28/2019 PPT Pres for SP

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Voice over Powerline

By:

Theo Manuel Balonzo

Angelo Britanico

Joseph Buenafe

Jerome Canet

Jose Eliseo Mateo


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Preview of the Problem

Creating new connection is time consuming and

expensive

Powerline Communication (PLC) is a system forcarrying data for electric power transmission

Power lines can be used as the transmission

medium in voice communication


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Landline is a form of transmission in telephone

communication

Maximize the functions of a transmission line byusing it for voice communication

Lessen the cost and eliminate the messy wirings

for new communication

Significance of the Study


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Construct a modem that allows voice to pass

through in a power line

Maximize the use of power lines by allowingcommunication through them

Lessen visible wirings inside a building

Objectives of the Study


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Limited to voice communication thru power line

Use existing power lines inside a building

Only modems will be developed by the

researchers for proper voice communication thru

power lines

Orthogonal Frequency Division Multiplex (OFDM)

will be used for multi frequency transmission

Scope and Delimitation


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The modem will use the frequency range from10kHz to 490kHz

Optimal transmission of voice signal will only beachieved when there are no power interruption

The researchers will be liable for the safety of theuser of the technology

The project will be limited to one on one telephoneconversation only

Scope and Delimitation


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Major George Squier

demonstrated the transmission of multiple telephone

channels

became the inspiration to develop and use

power lines as transmission for voice data

Review of Related Literature andStudies


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Japan and America Applies Powerline

Communication



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OFDM

modulation technique used for multi-carrier

transmission

most favorable for PLC channel

PLC Channel

There are 3 distortion factors:

Attenuation Multipath Effect

Noise



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Powerline Noise

Background Noise

Narrowband Noise

Impulsive Noise Periodic Impulsive Noise

Aperiodic Impulsive Noise



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Telephone

telecommunication device that transmits and

receives sounds

Telephone Ringing

a phone rings when its network indicates an

incoming call and the phone thus alerts the user

the call signal can be an electric



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Data Gathering Research Work

Proposal Paper

Components Canvassing

Simulation

Research and Circuit Design

Layout and etching

Assembling

Testing and Evaluation

Process Construction


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Program Flow Chart


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Physical Setup

Modem Modem

Power line

Telephone Telephone


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Physical Setup

Telephone

ModemAnalog to digital converter

Digital to analog converter

Line Drivers

Line Coupler

MAX2990

MAX2991


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Cost Breakdown

Description Quantity Unit Price AmountMAX2991 2 Php. 300.00 Php. 600.00MAX2990 2 400.00 800.00MAX2990EVKITA# 2 - -Analog to Digital Converter 2 800.00 1600.00Digital to Analog Converter 2 800.00 1600.00Telephone 2 200.00 400.00AC Adapter 2 200.00 400.00Casing 2 500.00 1000.00Miscellaneous n/a n/a 3000.00

Total Php. 9400.00+

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