Wireless communication

Name: saujanya shahContact number: 8602610785, 8055317428

Reg. number: WRO0416143

Center name: ICAI TOWER, BKC, BANDRA(east)

Batch timing: 1:30pm to 6:30pm

Batch date: 24th Nov to 20th Dec, 2014

TITLE OF PROJECT:

WIRELESS COMMUNICATION

Why wireless communication? Freedom from wires. No bunch of wires are running here and there. “Auto Magical” instantaneous wireless without any physical

connection setup e.g.- Bluetooth, Wi- Fi. Global coverage. Communication can reached where wire is infeasible or

costly. E.g.- rural areas, buildings, battlefield, outer space. Stay connected, flexibility to connect multiple devices.

Wireless operation permits service,

long-range communication, that areimpossible or impractical to implementwith the use of wires. The term is commonly used in telecommunicationsindustry to refer telecommunicationssystem (e.g. radio transmitters & receivers,remote controls etc.) which use some form of energy (e.g. radio waves, acoustic energyetc.)to transfer information without the use of wire.

Information transfer in this mannerover both short and long distances.

INTRODUCTION

Transmitting/receiving voice and data using

electromagnetic waves in open space.

The information from sender to receiver is carried over a well defined channel.

Each channel has a fixed frequency bandwidth & capacity(bit rate).

Different channels can be used to transmit information in parallel and independently.

What is wireless communication?

Communicating with each other & sharing

information.

Remote access to medical records by a paramedic may save a life.

Reconnaissance updates by a soldier with a handheld device.

At the time of disaster it is very useful mode to connect.

• It is useful in the business deals.

Needs of wireless communication

Do’s and Don’ts of wireless communication

Advantages (Do’s)

Working professionals can work and access internet anywhere & anytime without carrying cables and wires wherever they go. This also helps to complete the work anywhere on time & increases the productivity.

A wireless communication network is a solution in areas where cables are impossible to install (e.g. hazardous areas, long distances).

Wireless network are cheaper to install and maintain.

Disadvantages (Don’ts)

Has security vulnerabilities.

High cost of setting the infrastructure.

• Unlike wired communication, wireless communication are influenced by physical obstructions, climatic condition, interference from other wireless devices.

Radio Transmission:- easily generated, Omni-directional, travel long distance, easily penetrates buildings.◙ Problems:- frequency dependent, relatively low

bandwidth for data communication, tightly licensed by government.

Microwave Transmission:- widely used for long distance communication, relatively inexpensive.◙ Problems:- don’t pass through buildings, weather and

frequency dependent.

Types of wireless communication

Infrared waves transmission:- widely used for short range communication ,unable to pass through solid object, used for indoor wireless LANs, not for outdoors.Light wave transmission:- unguided optical signal such as laser, unidirectional, easy to install, no license required.◙ Problems:- unable to penetrate rain or thick fog, laser

beam can easily diverted by air.

Types continued….

Current wireless system

Definition- practical-

Wireless communication technology in which severalsmall exchanges (called cells)equipped with low power antennas(strategically located over a wide geographical areas) are interconnectthrough a central exchange. As a receiver (cell phone) move from one place to next, its identity, location, andradio frequency is handed-over by one cell to another without interrupting a call.

Cellular system

– Forward voice channel (FVC): voice transmission

from base station to mobile.

– Reverse voice channel (RVC): voice transmission from mobile to base station.

– Forward control channel (FCC): initiating mobile call from base station to mobile.

– Reverse control channel (RCC): initiating mobile call from mobile to base station.

COMMUNICATION BETWEEN THE BASE STATION AND MOBILES IS DEFINED BY THE STANDARD COMMON AIR INTERFACE (CAI)

Definition-

WLAN is a wireless computer network that links two or more devices using the wirelessdistribution method.• It connects local computers.• Range (100m) confined region.• Channel access is shared.• Backbone internet provide best service.• Low mobility• Poor performance in some application like video• Popular over last few years.

WIRELESS LOCAL AREA NETWORK (WLAN)

Definition- Practical-

A satellite designed to facilitateradio, telephone and televisioncommunication by retransmitting the signals it receive while orbitingthe earth.• Global coverage.• Optimized good transmission.• Expensive base station.• Telecommunication application.• Voice and data transmission.• GPS, global communication connection.• TV broadcasting, military, weather broadcasting.

SATELLITE SYSTEM

Definition- Practical-

In computer OS, paging is one ofthe memory management schemeby which a computer stores andretrieves data from secondary storage for use in main memory.• Broad coverage for short message.• Message broadcast from all base station.• Simple terminal.• Overtaken by cellular.• Optimize for one way transmission.• Answer back hard.

Paging system

Definition- Practical-

A standard for the short-range wireless interconnection ofmobile phones, computers, andother electronic devices.

• Short range radio waves transmitdata between Bluetooth devices.

• Short distance transmission of about30 feet.

• Low power consumption.• Popular over last few years.

PENS (BLUETOOTH)

SOURCE OF INFORMATION:

INTERNET

Internet :

www.google.comwww.slideshare.netwww.wikipedia.com

BIBLIOGRAPHY

• Wireless OR NOT, each technology has its advantage & disadvantages.• Wireless technologies increase convenience and decrease ‘ SAFETY’. Wired technologies are mostly used whenever reliability is of major

IMPORTANCE.• They make us more efficient in communicating & COLLABORATING. Diseases & health of the human-body can be efficiently MONITORED with

smartphones and in-body and in-home sensor networks.• Wireless communication system are becoming cheaper, easier to

IMPLEMENT & smaller every day. Wireless solutions can be time SAVING, easier to use & more mobile.• Our lives have already been POSITIVELY influenced by using wireless

technologies.

THUS, it can be CONCLUDED that wireless technologies will indeed IMPROVES our LIFE QUALITY.

CONCLUSION