alokasi frekuensi dan media rambatan_novy

8/9/2019 Alokasi frekuensi dan media rambatan_novy

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ALOKASI FREKUENSI RADIO DANALOKASI FREKUENSI RADIO DAN

MEKANISME PERAMBATANMEKANISME PERAMBATAN

MK DASAR TELEKOMUNIKASIMK DASAR TELEKOMUNIKASI

Novy NRA MokobombangNovy NRA Mokobombang

TEKNIK ELEKTRO UNIVERSITA S TEKNIK ELEKTRO UNIVERSITA SHASANUDDINHASANUDDIN

FEBRUARI 2009FEBRUARI 2009



OVERVIEWOVERVIEW

BackgroundBackground

VisionVisionThe scenariosThe scenarios



Scenario 1 - Residential High SpeedScenario 1 - Residential High Speed

Internet AccessInternet Access

Scenario 2 - Broadband Internet Access inScenario 2 - Broadband Internet Access in

Remote Area using LOS connectionRemote Area using LOS connection

THE SCENARIOS THE SCENARIOS



http://apollo.lsc.vsc.edu/classes/met130/notes/chapter1/graphics/ion_layers.jpg

The Ionosphere and Radio

Wave Propagation The ionosphere is important for

radio wave (AM only)

propagation....

ionosphere is composed of the

D, E, and F layers

the D layer is good at absorbing

AM radio waves

D layer dissapears at night.... the

E and F layers bounce the

waves back to the earth

this explains why radio stationsadjust their power output at

sunset and sunrise



Gelombang radioGelombang radio

gelombang yang memiliki frekuensi paling kecil ataugelombang yang memiliki frekuensi paling kecil atau

panjang gelombang paling panjang (1 cm sampaipanjang gelombang paling panjang (1 cm sampai

ratusan m)ratusan m)

Frekuensi radio (radio frequency : RF) adalah frekuensi

yang digunakan sebagai carrier / pembawa pada

komunikasi radio

Suatu sistem telekomunikasi yang menggunakan RFSuatu sistem telekomunikasi yang menggunakan RF

sebagai pembawa sinyal informasinya terdiri dari antenasebagai pembawa sinyal informasinya terdiri dari antena

pemancar dan antena penerima.pemancar dan antena penerima.

BACKGROUNDBACKGROUND




Gelombang radio berada dalam rentangGelombang radio berada dalam rentang

frekuensi meliputi beberapa Hz sampaifrekuensi meliputi beberapa Hz sampai

gigahertz (GHz atau orde pangkat 9).gigahertz (GHz atau orde pangkat 9).

Gelombang ini dihasilkan oleh alat-alatGelombang ini dihasilkan oleh alat-alat

elektronik berupa rangkaian osilator elektronik berupa rangkaian osilator

(variasi dan gabungan dari komponen(variasi dan gabungan dari komponen

Resistor (R), induktor (L), dan kapasitor Resistor (R), induktor (L), dan kapasitor (C)).(C)).




1 http://aro.as.arizona.edu/outreach/posters/radiowaves.pdf

Frequency = Speed of Light /

Wavelength

ν = c / λ

(Hz or Cycles per Second are the basic

unit of Frequency)

Wavelength = Speed of Light /

Frequencyλ = c /ν

(Micron, 1/1,000,000 of 1 meter or 10-6m,

is the basic unit for measuring the

wavelength)



VISIONVISION

Company’s vision:Company’s vision:

A nation wide WiMAX coverage andA nation wide WiMAX coverage and

commercial services to mitigate digitalcommercial services to mitigate digitaldivide within 5 yearsdivide within 5 years

The planning is designed to make thatThe planning is designed to make thatvision feasible and to turn digital dividevision feasible and to turn digital divide

into ICT digital bridge regioninto ICT digital bridge region



Scenario 1 - Residential High SpeedScenario 1 - Residential High Speed

Internet AccessInternet Access

Scenario 2 - Broadband Internet Access inScenario 2 - Broadband Internet Access in

Remote Area using LOS connectionRemote Area using LOS connection

THE SCENARIOS THE SCENARIOS



THE SCENARIOSTHE SCENARIOS

Scenario 1 - Residential High Speed Internet Access

IP Transport

Laptop

Desktop

PDA

WiMAX BS WiMAX BS



WiMAX be a competitor for areas thatWiMAX be a competitor for areas that

currently used xDSL or Cable technologycurrently used xDSL or Cable technologyin urban areas.in urban areas.

It will be deployed as a replacement for It will be deployed as a replacement for wired connections.wired connections.

Hopefully can provide a reasonable,Hopefully can provide a reasonable,reliable and ascendible internet accessreliable and ascendible internet access

THE SCENARIOS

enario 1 - Residential Hi Speed Internet Access



THE SCENARIOSTHE SCENARIOS

cenario 2 - Broadband Internet Access in Remote

Area using LOS connection

Residential/SOHO

broadband

Wireless backhaufor hot spots

DSL level servicefor small business

Telco central office or

Fiber (private) network

Internet

backbone

P2P for connecting BS

& feeding cellular towers



WiMAX deployment can easily reachWiMAX deployment can easily reachremote area but economically infeasibleremote area but economically infeasibleto reach by xDSL or cable technologies.to reach by xDSL or cable technologies.

The area consists of urban housing,The area consists of urban housing,SME and small businesses such asSME and small businesses such asfarming, home industries and miningfarming, home industries and miningcompanycompany

THE SCENARIOS

Scenario 2 - Broadband Internet Access inRemote Area using LOS connection



Question



This presentation is a part of the This presentation is a part of the

assignment for Technical Planassignment for Technical Plan

subject, lecturer : Herman Riezebossubject, lecturer : Herman RiezebosMSTM program, HAN University of MSTM program, HAN University of

Applied SciencesApplied Sciences

alokasi frekuensi dan media rambatan_novy

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