GSM Vs CDMA

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Presentation on

GSM/CDMA

Network

PRESENTED BY ANOOP SINGH

(2K-81-IB-07)

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History Of GSM

: Developed by Group Spéciale Mobile (founded

1982) which was an initiative of CEPT

( Conference of European Post and

Telecommunication )

: Aim : to replace the incompatible analog system

: Presently the responsibility of GSM standardization

resides with special mobile group under ETSI

( European telecommunication Standards ( European telecommunication Standards Institute )

Institute )

: Full set of specifications phase-I became available

in 1990 . Under ETSI, GSM is named as “

in 1990 . Under ETSI, GSM is named as “ GGlobal lobal

S

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GSM Phone

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What Is GSM



_{The full form of GSM is Global system for}

Mobile Communication. GSM is one of the

most famous working standards for mobile

phones

all over the world.

Over two billion people use the GSM

services across 212 countries and

territories in the world. The

utility

of GSM makes national and international

roaming very simple and easy between

mobile phone operators, which enable

users

to use their cell phone in various

parts of the world.

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First GSM Launched

 15 years ago: the first produced GSM phone15 years ago: the first produced GSM phone  Fifteen years ago , Nokia launched the world's first Fifteen years ago , Nokia launched the world's first

commercially available GSM digital phone, the Nokia

1011, the model number coming from the launch date: 10

November 1992.



Nokia's 1011: GSM first

 The 475g 1011 was rather heavier than today's slimline The 475g 1011 was rather heavier than today's slimline

models. A lot of the weight came from the unit's

nickel-cadmium rechargeable battery, which yielded a low - by

cadmium rechargeable battery, which yielded a low - by

today's standards - talk time of just 90 minutes. It could

stay operational for 12 hours in stand-by mode.

 The 195 x 60 x 45mm handset could hold 99 phone The 195 x 60 x 45mm handset could hold 99 phone

numbers and the names of their owners, any of which

could be displayed on the 1011's two-line screen. There

was no colour, no camera, no Bluetooth, no memory card

slot and the handset had to have an extendible antenna.

But it did introduce one innovation that phone owners now

use without a second thought: text messaging.

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Services Rendered

 Call related services :Call related services :

 • • Call Waiting- Notification of an incoming call while Call Waiting- Notification of an incoming call while

on the

on the  handsethandset

 • • Call Hold- Put a caller on hold to take another callCall Hold- Put a caller on hold to take another call  • • Call Barring- All calls, outgoing calls, or incoming Call Barring- All calls, outgoing calls, or incoming

calls

 • • Call Forwarding- Calls can be sent to various Call Forwarding- Calls can be sent to various

numbers defined by the user

 • • Multi Party Call Conferencing - Link multiple calls Multi Party Call Conferencing - Link multiple calls

together

 • • CLIP – Caller line identification presentationCLIP – Caller line identification presentation  • • CLIR – Caller line identification restrictionCLIR – Caller line identification restriction  • • CUG – Closed user groupCUG – Closed user group

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GSM Frequency Regions In

World

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GSM Frequency



1 GSM frequency bands



1.1 GSM-900 and GSM-1800



1.2 GSM-850 and GSM-1900

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GSM Frequency Cont.



GSM-900 and GSM-1800 are

used in most parts of the world:

Europe

, Middle East

,

Middle East

, Africa

,

Africa

and

most of

most of Asia

Asia

. In South Americas

it is in

it is in Costa Rica

Costa Rica

(GSM-1800),

Brazil

(GSM-850, 900 and

1800),

1800), Guatemala

Guatemala

(GSM-850,

_(GSM-850,

GSM-900 and 1900),

GSM-900 and 1900),Salvador

Salvador

(GSM-850, GSM-900 and

1900).

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GSM Frequencies



GSM-850 and GSM-1900 are

used in the

used in the United States

United States

,

Canada

, and many other

countries in the Americas.



Another less common GSM

version is GSM-450. It is a first

generation (

generation (1G

1G

) mobile phone

_{) mobile phone}

system which was primarily

used in

used in Nordic countries

Nordic countries

,

_,

Eastern Europe

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History And Development Of

CDMA

 CDMA (Code Division Multiple Assess) is first used CDMA (Code Division Multiple Assess) is first used

in military based communication technology used

during World War II by English allies to Stop

German attempts to decode transmissions

German attempts to decode transmissions  A Company named Qualcomm created A Company named Qualcomm created

communications chips and designs for CDMA

technology and later claimed patents on the

technology.

 Claude Shannon and Robert Pierce had provided Claude Shannon and Robert Pierce had provided

CDMA framework in 1949.

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CDMA Phone

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How CDMA works



_{1 Frequency division multiple access (FDMA)}

2.Time division multiple access (TDMA)

3.Code division multiple access (CDMA)

Thus CDMA is one access technology which cell

phones uses to transmit and receive data.. That is

FDMA puts each call on a separate frequency and

TDMA assigns each call a certain portion of time

on a designated frequency for the above

mentioned purpose. But CDMA gives a unique

code to each call and spreads it over the available

frequencies. All these are multiple access systems

because more than one user can use the specified

At a Time

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Comparision

 TDMA of GSM.TDMA of GSM.

The data transmission in TDMA is actually not

continuous. It occurs in bursts. But the time

between these bursts for a single mobile phone

user is very very short, so that he never knows that

the speech of the other person is discontinuous!

But the CDMA system has a soft capacity limit. That

is increasing the number of users will decreases the

system performance.( any comments Reliance

users..?..!!).

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CDMA Ad/Dis

 Advantages of CDMA include:

 Increased cellular communications security.  Simultaneous conversations.

 Smaller phones.

 Low power requirements and little cell-to-cell coordination

needed by operators.

 Extended reach - beneficial to rural users situated far from

cells.

 Disadvantages of CDMA include:

 CDMA is relatively new, and the network is not as mature as

GSM.

 CDMA cannot offer international roaming, a large GSM

advantage.

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GSM Ad/Dis

 _{Advantages of GSM:}

 _{GSM is already used worldwide with over millions of subscribers.}  _{International roaming permits subscribers to use one phone}

throughout Western Europe. CDMA will work in Asia, but not France, Germany, the U.K. and other popular European

destinations.

 _{GSM is mature, having started in the mid-80s. This maturity means}

a more stable network . CDMA is still building its network.

 _{GSM's maturity means engineers cut their teeth on the technology,}

creating an unconscious preference.

 _{The availability of Subscriber Identity Modules, which are smart}

cards that provide secure data encryption give GSM advantages.

 _{Disadvantages of GSM:}

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Some Facts



GSM is a widely spread standard and

CDMA is a patented technology. That is

you must pay a royalty for using CDMA! .

So being a GSM user you have virtually an

international roaming. You can easily use a

GSM phone in any of Available countries

while roaming.

GSM users are almost 8 times in number

than CDMA users worldwide. By being a

GSM user you will be part of the largest

mobile community.

And coming to voice quality GSM is far

better than CDMA.

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Conclusion



_{In general I say both GSM and CDMA are frontier}

technologies and both have good and bad qualities.

And in the case of mobile handsets the fact is that

GSM handsets are very popular and many of the new

facilties are readily available in GSM phones with

lesser price. The reason is simple...nokia and motorola

needs profit...and they will invest more in GSM

because GSM has 8 times more users than CDMA.



_{GSM still holds the upper hand however. There's the}

numerical advantage for one thing: 456 million GSM

users versus CDMA's 82 million

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Service Provider In India



Bharti Mobinet Limited

Bharti Mobinet Limited - Brand name AirTel- Brand name AirTel Mobile Service Area : Chennai (Metro)

Mobile Service Area : Chennai (Metro)

Address: Paramount Plaza, 22, Mahatma Gandhi

road, Chennai 600034 . India

Telephone 91 44 -2822 4595

Bharti Mobinet Limited Website :

Bharti Mobinet Limited Website : www.airtelworld.com

www.airtelworld.com

 Bharti Mobitel LimitedBharti Mobitel Limited - Brand name AirTel - Brand name AirTel

Mobile Service Area : Calcutta / Kolkatta (Metro) -

India

Address : Infinity Building, 5th floor, Salt lake

electronics complex, Bidhannagar, Block G P,

Sector 5, Sector 5, Kolkata -700091 Kolkata -700091 Telephone : 91 -33- 23575332 Telephone : 91 -33- 23575332

Bharti Mobitel Limited Web site :

Bharti Mobitel Limited Web site : www.airtelworld.com

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Cont……

_{Hexacom India Limited - Brand name Oasis Cellular}

Address : Raghu Prakash building, 30 Lajpat Marg, C-Scheme Jaipur 302001 India.

Mobile service area : Rajasthan, North East Telephone : 91- 141 -2374 471 / 72

Oasis Cellular web site : www.oasiscellular.com

Hutchison Essar South Limited - Brand name Hutch

Address : Prestige Blue Chip, Ground Floor, Block -1, No. 9, Hosur road, Bangalore - 560029. India

Mobile service area : Karnataka, Chennai, Andhra Pradesh. Telephone : 91 -80 -4193000

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Cont….

 Mahanagar Telephone Nigam LimitedMahanagar Telephone Nigam Limited - Brand - Brand

name Dolphin

Address : Jeevan Bharti tower-1, 124, Connaught

Circus, New Delhi-110001 . India

Telephone : 91- 11 -2371 9020

Mobile service area : Mumbai, Delhi

web site :

web site : www.mtnl.net.inwww.mtnl.net.in

Reliance Telecom Limited

Reliance Telecom Limited - Brand name Reliance - Brand name Reliance India Mobile

India Mobile

Address : Reliance Infocomm Ltd.,Dhirubhai

Ambani Knowledge City,Thane, Belapur road,

Navi Mumbai 406709. India

Telephone : 91 -022 -2762 4000

Mobile Service area :

web site :

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Cont…

 LimitedLimited - Brand name Hutch - Brand name Hutch

Address : 6th floor, Sakar II, Ellisbridge,

Ahmedabad- 380006. Gujarat. India

Mobile service area : Gujarat

Telephone : 91- 79- 2657 7228 / 9

Fascal Mobile web site :

Fascal Mobile web site : www.hutch.co.in www.hutch.co.in

Hutchison Telecom East Limited

Hutchison Telecom East Limited - Brand name - Brand name Hutch

Hutch

Address : Constantia Office Complex, 4th floor, 11,

Dr. U N Brahmachari Rd, Kolkatta 700 017. India

Telephone : 91 -33- 2280 3427

Mobile service area : Kolkatta ( calcutta )

web site :

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Cont….



_{RPG Cellular Services Limited - Brand name}

RPG Cellular

Address : 5th Floor, Spencer Plaza, 769 Anna

Salai, Chennai -600002 . India

Telephone : 91 44 2855 0550

Mobile Service area : Chennai (Metro)

web site :

www.rpgcellular.com

Spice Communications Limited - Brand name

Spice

Address : Hemkunt Towers, 98, Nehru Place, New

Delhi-110019. India

Telephone : 91- 11 -2643 4544

Mobile service area : Karnataka, Punjab

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Cont..

 Bharti Telenet Limited Bharti Telenet Limited - Brand name AirTel- Brand name AirTel

Address: C-25, Phase -II, industrial area, Mohali, Punjab ,

India

Mobile Service Area : Himachal Pradesh ( H.P ), India

Telephone : 91 -172 -397281 / 2

Bharti Telenet Limited Web site

Bharti Telenet Limited Web site www.airtelworld.comwww.airtelworld.com

BPL Cellular Limited

BPL Cellular Limited - brand name BPL Mobile. - brand name BPL Mobile.

Address : BPL Innovision Centre, No. 54, Richmond road,

Bangalore -560025 India

Mobile service area : Kerala, Maharashtra,Tamil Nadu

Telephone : 91 -80 - 5095 509/559 4911

BPL Cellular Ltd site :

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Cont…

 Aircel LimitedAircel Limited. Brand Name: Aircel . Brand Name: Aircel

Mobile Service area : Tamil Nadu ( India )

Address: Viscose Towers, 4th floor,107-B, Avinashi road,

Coimbatore -641018, India

Telephone: 91 422 2217 517. Fax: 91 422 2218 907

Aircel Limited Web site:

Aircel Limited Web site: www.aircel.comwww.aircel.com

Aircel Digilink India Limited.

Aircel Digilink India Limited. Brand Name : Essar Cellphone Brand Name : Essar Cellphone Mobile Service Area : Rajasthan, Haryana, Uttar Pradesh (E) .

Mobile Service Area : Rajasthan, Haryana, Uttar Pradesh (E) .

India

Address: X-7, Okhla Industrial area, Phase II, New Delhi 110020

. India

Telephone : 91 11 2638 8701

Aircel Digilink India Limited Web site :

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Cont….



_{IDEA Cellular Limited - Brand name Idea}

Address : 5-9-62 Khan Lateef Khan estate, Fateh

Maidan Rd, Hyderabad 500 001 . India

Telephone : 91 -40 -656 2000

Mobile service area : Andhra Pradesh

web site : http://www.ideacellular.com

Koshika Telecom Limited - Brand name

Ushafone

Address : Usha Bhavan, A-41, Mohan Co-operative

Industrial area, Mathura road, New Delhi 110044.

India

Telephone : 91 -11 -2695 9200/300

Mobile service area : Uttar Pradesh

web site :

www.koshika.com

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Cont….

 Bharti Cellular LimitedBharti Cellular Limited - Brand Name : AirTel - Brand Name : AirTel

Mobile Service Area : New Delhi (Metro), Mumbai

(Metro), Uttar Pradesh (W), Haryana, Kerala,

Madhya Pradesh, GujaratMaharashtra, Tamil Nadu,

. ( India )

Bharti Cellular Limited Web site :

Bharti Cellular Limited Web site : www.airtelworld.com

www.airtelworld.com

Bharti Mobile Limited

Bharti Mobile Limited - Brand name : Airtel- Brand name : Airtel

Mobile Service areas : Andhra Pradesh, Karnataka

& Punjab under the brand name

Address: 47, Millers Tank Bund road ,Bangalore

-560052 . India

Telephone : 91 80 228 2211

Bharti Mobile Limited Web site :

Bharti Mobile Limited Web site : www.airtelworld.com

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Cont….

 BPL Mobile Communications BPL Mobile Communications - brand name BPL - brand name BPL

Mobile

Address :BPL Telecom Center, 127, Manmala Tank

road, Taikalwadi, Mahim, Mumbai -400 016 . India

Telephone : 91 -22 -2437 1777 / 4977

Mobile service area : Mumbai (Metro)

BPL Mobile web site :

BPL Mobile web site : www.bplmobile.comwww.bplmobile.com

Escotel Mobile Communications

Escotel Mobile Communications - Brand name - Brand name Escotel Mobile

Escotel Mobile

Address : A-36, Mohan Co-operative Industrial

estate, Mathura road, New Delhi- 110044 India

Mobile Service area : Haryana, Kerala, Uttar

pradesh

Telephone : 91 -11-2695 9364/236

Escotel web site :

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Cont….

 Hutchison Essar Telecom LimitedHutchison Essar Telecom Limited - Brand name - Brand name

Hutch

Address : C-48, Okhla Industrial Area Phase II, New

Delhi 110020 . India

Mobile service area : Delhi (Metro)

Telephone : 91 -11-2638 5004

web site :

web site : www.hutch.co.inwww.hutch.co.in

Hutchison Max Telecom Limited

Hutchison Max Telecom Limited - Brand name - Brand name Orange

Orange

Address : Stanrose House, 1st flr Standard Mills

compound, New Prabhadevi Road, Mumbai -25 .

India

Telephone :

Mobile service area : Mumbai city (Metro)

Web site :

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Thanks

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