GSM Vs CDMA

Presentation on GSM/CDMANetwork

PRESENTED BY ANOOP SINGH(2K-81-IB-07)

History Of GSMHistory Of GSM

: Developed by Group Spéciale Mobile (founded : Developed by Group Spéciale Mobile (founded 1982) which was an initiative of CEPT 1982) which was an initiative of CEPT ( Conference of European Post and ( Conference of European Post and Telecommunication )Telecommunication )

: Aim : to replace the incompatible analog system: Aim : to replace the incompatible analog system

: Presently the responsibility of GSM standardization : Presently the responsibility of GSM standardization resides with special mobile group under ETSI resides with special mobile group under ETSI ( European telecommunication Standards ( European telecommunication Standards Institute )Institute )

: Full set of specifications phase-I became available : 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 SSystem for ystem for MMobile communication “obile communication “

GSM PhoneGSM Phone

What Is GSMThe 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.

First GSM LaunchedFirst 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 commercially available GSM digital phone, the Nokia 1011, the model number coming from the launch date: 10 1011, the model number coming from the launch date: 10 November 1992.November 1992.

Nokia's 1011: GSM firstNokia'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-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 today's standards - talk time of just 90 minutes. It could stay operational for 12 hours in stand-by mode.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 numbers and the names of their owners, any of which could be displayed on the 1011's two-line screen. There could be displayed on the 1011's two-line screen. There was no colour, no camera, no Bluetooth, no memory card was no colour, no camera, no Bluetooth, no memory card slot and the handset had to have an extendible antenna. slot and the handset had to have an extendible antenna. But it did introduce one innovation that phone owners now But it did introduce one innovation that phone owners now use without a second thought: text messaging.use without a second thought: text messaging.

Services RenderedServices Rendered

Call related services :Call related services : • • Call Waiting- Notification of an incoming call while Call Waiting- Notification of an incoming call while

on theon 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

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

numbers defined by the usernumbers defined by the user • • Multi Party Call Conferencing - Link multiple calls Multi Party Call Conferencing - Link multiple calls

togethertogether • • 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

GSM Frequency Regions In GSM Frequency Regions In WorldWorld

GSM FrequencyGSM Frequency

1 GSM frequency bands1 GSM frequency bands

1.1 GSM-900 and GSM-18001.1 GSM-900 and GSM-1800 1.2 GSM-850 and GSM-19001.2 GSM-850 and GSM-1900

GSM Frequency Cont.GSM Frequency Cont.

GSM-900 and GSM-1800 are GSM-900 and GSM-1800 are used in most parts of the world: used in most parts of the world: EuropeEurope, , Middle EastMiddle East, , AfricaAfrica and and most of most of AsiaAsia. In South Americas . In South Americas it is in it is in Costa RicaCosta Rica (GSM-1800), (GSM-1800), BrazilBrazil (GSM-850, 900 and (GSM-850, 900 and 1800), 1800), GuatemalaGuatemala (GSM-850, (GSM-850, GSM-900 and 1900),GSM-900 and 1900),SalvadorSalvador (GSM-850, GSM-900 and (GSM-850, GSM-900 and 1900). 1900).

GSM FrequenciesGSM Frequencies

GSM-850 and GSM-1900 are GSM-850 and GSM-1900 are used in the used in the United StatesUnited States, , CanadaCanada, and many other , and many other countries in the Americas. countries in the Americas.

Another less common GSM Another less common GSM version is GSM-450. It is a first version is GSM-450. It is a first generation (generation (1G1G) mobile phone ) mobile phone system which was primarily system which was primarily used in used in Nordic countriesNordic countries, , Eastern EuropeEastern Europe

History And Development Of History And Development Of CDMACDMA

CDMA (Code Division Multiple Assess) is first used CDMA (Code Division Multiple Assess) is first used in military based communication technology used in military based communication technology used during World War II by English allies to Stop 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 communications chips and designs for CDMA technology and later claimed patents on the technology and later claimed patents on the technology.technology.

Claude Shannon and Robert Pierce had provided Claude Shannon and Robert Pierce had provided CDMA framework in 1949.CDMA framework in 1949.

CDMA PhoneCDMA Phone

How CDMA works1 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

ComparisionComparision

TDMA of GSM.TDMA of GSM.The data transmission in TDMA is actually not The data transmission in TDMA is actually not continuous. It occurs in bursts. But the time continuous. It occurs in bursts. But the time between these bursts for a single mobile phone between these bursts for a single mobile phone user is very very short, so that he never knows that user is very very short, so that he never knows that the speech of the other person is discontinuous!the speech of the other person is discontinuous!

But the CDMA system has a soft capacity limit. That But the CDMA system has a soft capacity limit. That is increasing the number of users will decreases the is increasing the number of users will decreases the system performance.( any comments Reliance system performance.( any comments Reliance users..?..!!).users..?..!!).

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.  

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: Lack of access to burgeoning American market

Some FactsSome Facts

GSM is a widely spread standard and GSM is a widely spread standard and CDMA is a patented technology. That is CDMA is a patented technology. That is you must pay a royalty for using CDMA! . you must pay a royalty for using CDMA! . So being a GSM user you have virtually an So being a GSM user you have virtually an international roaming. You can easily use a international roaming. You can easily use a GSM phone in any of Available countries GSM phone in any of Available countries while roaming. while roaming.

GSM users are almost 8 times in number GSM users are almost 8 times in number than CDMA users worldwide. By being a than CDMA users worldwide. By being a GSM user you will be part of the largest GSM user you will be part of the largest mobile community. mobile community. And coming to voice quality GSM is far And coming to voice quality GSM is far better than CDMA.better than CDMA.

ConclusionIn 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

Service Provider In IndiaService Provider In India

Bharti Mobinet Limited Bharti Mobinet Limited - Brand name AirTel- Brand name AirTelMobile Service Area : Chennai (Metro)Mobile Service Area : Chennai (Metro)Address: Paramount Plaza, 22, Mahatma Gandhi Address: Paramount Plaza, 22, Mahatma Gandhi road, Chennai 600034 . Indiaroad, Chennai 600034 . IndiaTelephone 91 44 -2822 4595 Telephone 91 44 -2822 4595 Bharti Mobinet Limited Website : Bharti Mobinet Limited Website : www.airtelworld.comwww.airtelworld.com

Bharti Mobitel LimitedBharti Mobitel Limited - Brand name AirTel - Brand name AirTelMobile Service Area : Calcutta / Kolkatta (Metro) - Mobile Service Area : Calcutta / Kolkatta (Metro) - IndiaIndiaAddress : Infinity Building, 5th floor, Salt lake Address : Infinity Building, 5th floor, Salt lake electronics complex, Bidhannagar, Block G P, electronics complex, Bidhannagar, Block G P, Sector 5,Sector 5,Kolkata -700091 Kolkata -700091 Telephone : 91 -33- 23575332Telephone : 91 -33- 23575332Bharti Mobitel Limited Web site : Bharti Mobitel Limited Web site : www.airtelworld.comwww.airtelworld.com

Cont……Hexacom India Limited - Brand name Oasis Cellular

Address : Raghu Prakash building, C-30 Lajpat Marg, C-Scheme Jaipur 302001 India.Mobile service area : Rajasthan, North EastTelephone : 91- 141 -2374 471 / 72Oasis Cellular web site : www.oasiscellular.com

Hutchison Essar South Limited - Brand name HutchAddress : Prestige Blue Chip, Ground Floor, Block -1, No. 9, Hosur road, Bangalore - 560029. IndiaMobile service area : Karnataka, Chennai, Andhra Pradesh.Telephone : 91 -80 -4193000web site : www.hutch.co.in

Cont….Cont….

Mahanagar Telephone Nigam LimitedMahanagar Telephone Nigam Limited - Brand - Brand name Dolphinname DolphinAddress : Jeevan Bharti tower-1, 124, Connaught Address : Jeevan Bharti tower-1, 124, Connaught Circus, New Delhi-110001 . IndiaCircus, New Delhi-110001 . IndiaTelephone : 91- 11 -2371 9020 Telephone : 91- 11 -2371 9020 Mobile service area : Mumbai, DelhiMobile service area : Mumbai, Delhiweb site : web site : www.mtnl.net.inwww.mtnl.net.in

Reliance Telecom LimitedReliance Telecom Limited - Brand name Reliance - Brand name Reliance India MobileIndia MobileAddress : Reliance Infocomm Ltd.,Dhirubhai Address : Reliance Infocomm Ltd.,Dhirubhai Ambani Knowledge City,Thane, Belapur road, Ambani Knowledge City,Thane, Belapur road, Navi Mumbai 406709. IndiaNavi Mumbai 406709. IndiaTelephone : 91 -022 -2762 4000Telephone : 91 -022 -2762 4000Mobile Service area : Mobile Service area : web site :web site : www.ril.com www.ril.com

Cont…Cont…

LimitedLimited - Brand name Hutch - Brand name HutchAddress : 6th floor, Sakar II, Ellisbridge, Address : 6th floor, Sakar II, Ellisbridge, Ahmedabad- 380006. Gujarat. IndiaAhmedabad- 380006. Gujarat. IndiaMobile service area : GujaratMobile service area : GujaratTelephone : 91- 79- 2657 7228 / 9Telephone : 91- 79- 2657 7228 / 9Fascal Mobile web site : Fascal Mobile web site : www.hutch.co.in www.hutch.co.in

Hutchison Telecom East LimitedHutchison Telecom East Limited - Brand name - Brand name HutchHutchAddress : Constantia Office Complex, 4th floor, 11, Address : Constantia Office Complex, 4th floor, 11, Dr. U N Brahmachari Rd, Kolkatta 700 017. IndiaDr. U N Brahmachari Rd, Kolkatta 700 017. IndiaTelephone : 91 -33- 2280 3427Telephone : 91 -33- 2280 3427Mobile service area : Kolkatta ( calcutta )Mobile service area : Kolkatta ( calcutta )web site : web site : www.hutch.co.inwww.hutch.co.in

Cont….RPG Cellular Services Limited - Brand name

RPG CellularAddress : 5th Floor, Spencer Plaza, 769 Anna Salai, Chennai -600002 . IndiaTelephone : 91 44 2855 0550Mobile Service area : Chennai (Metro)web site : www.rpgcellular.com

Spice Communications Limited - Brand name SpiceAddress : Hemkunt Towers, 98, Nehru Place, New Delhi-110019. IndiaTelephone : 91- 11 -2643 4544Mobile service area : Karnataka, Punjabweb site www.spiceindia.com www.spicetele.com

Cont..Cont..

Bharti Telenet Limited Bharti Telenet Limited - Brand name AirTel- Brand name AirTelAddress: C-25, Phase -II, industrial area, Mohali, Punjab , Address: C-25, Phase -II, industrial area, Mohali, Punjab , IndiaIndiaMobile Service Area : Himachal Pradesh ( H.P ), IndiaMobile Service Area : Himachal Pradesh ( H.P ), IndiaTelephone : 91 -172 -397281 / 2Telephone : 91 -172 -397281 / 2Bharti Telenet Limited Web site Bharti Telenet Limited Web site www.airtelworld.comwww.airtelworld.com

BPL Cellular LimitedBPL Cellular Limited - brand name BPL Mobile. - brand name BPL Mobile.Address : BPL Innovision Centre, No. 54, Richmond road, Address : BPL Innovision Centre, No. 54, Richmond road, Bangalore -560025 IndiaBangalore -560025 IndiaMobile service area : Kerala, Maharashtra,Tamil NaduMobile service area : Kerala, Maharashtra,Tamil NaduTelephone : 91 -80 - 5095 509/559 4911 Telephone : 91 -80 - 5095 509/559 4911 BPL Cellular Ltd site :BPL Cellular Ltd site :

Cont…Cont…

Aircel LimitedAircel Limited. Brand Name: Aircel . Brand Name: Aircel Mobile Service area : Tamil Nadu ( India ) Mobile Service area : Tamil Nadu ( India ) Address: Viscose Towers, 4th floor,107-B, Avinashi road, Address: Viscose Towers, 4th floor,107-B, Avinashi road, Coimbatore -641018, IndiaCoimbatore -641018, IndiaTelephone: 91 422 2217 517. Fax: 91 422 2218 907Telephone: 91 422 2217 517. Fax: 91 422 2218 907Aircel 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 CellphoneMobile Service Area : Rajasthan, Haryana, Uttar Pradesh (E) . Mobile Service Area : Rajasthan, Haryana, Uttar Pradesh (E) . IndiaIndiaAddress: X-7, Okhla Industrial area, Phase II, New Delhi 110020 Address: X-7, Okhla Industrial area, Phase II, New Delhi 110020 . India. IndiaTelephone : 91 11 2638 8701Telephone : 91 11 2638 8701Aircel Digilink India Limited Web site : Aircel Digilink India Limited Web site : www.essarcellular.comwww.essarcellular.com

Cont….IDEA Cellular Limited - Brand name Idea

Address : 5-9-62 Khan Lateef Khan estate, Fateh Maidan Rd, Hyderabad 500 001 . IndiaTelephone : 91 -40 -656 2000Mobile service area : Andhra Pradeshweb site : http://www.ideacellular.com

Koshika Telecom Limited - Brand name UshafoneAddress : Usha Bhavan, A-41, Mohan Co-operative Industrial area, Mathura road, New Delhi 110044. IndiaTelephone : 91 -11 -2695 9200/300Mobile service area : Uttar Pradeshweb site : www.koshika.com

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Bharti Cellular LimitedBharti Cellular Limited - Brand Name : AirTel - Brand Name : AirTelMobile Service Area : New Delhi (Metro), Mumbai Mobile Service Area : New Delhi (Metro), Mumbai (Metro), Uttar Pradesh (W), Haryana, Kerala, (Metro), Uttar Pradesh (W), Haryana, Kerala, Madhya Pradesh, GujaratMaharashtra, Tamil Nadu, Madhya Pradesh, GujaratMaharashtra, Tamil Nadu, . ( India ). ( India )Bharti Cellular Limited Web site : Bharti Cellular Limited Web site : www.airtelworld.comwww.airtelworld.com

Bharti Mobile Limited Bharti Mobile Limited - Brand name : Airtel- Brand name : AirtelMobile Service areas : Andhra Pradesh, Karnataka Mobile Service areas : Andhra Pradesh, Karnataka & Punjab under the brand name & Punjab under the brand name Address: 47, Millers Tank Bund road ,Bangalore Address: 47, Millers Tank Bund road ,Bangalore -560052 . India-560052 . IndiaTelephone : 91 80 228 2211Telephone : 91 80 228 2211Bharti Mobile Limited Web site : Bharti Mobile Limited Web site : www.airtelworld.comwww.airtelworld.com

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BPL Mobile Communications BPL Mobile Communications - brand name BPL - brand name BPL MobileMobileAddress :BPL Telecom Center, 127, Manmala Tank Address :BPL Telecom Center, 127, Manmala Tank road, Taikalwadi, Mahim, Mumbai -400 016 . Indiaroad, Taikalwadi, Mahim, Mumbai -400 016 . IndiaTelephone : 91 -22 -2437 1777 / 4977Telephone : 91 -22 -2437 1777 / 4977Mobile service area : Mumbai (Metro)Mobile service area : Mumbai (Metro)BPL Mobile web site : BPL Mobile web site : www.bplmobile.comwww.bplmobile.com

Escotel Mobile CommunicationsEscotel Mobile Communications - Brand name - Brand name Escotel MobileEscotel MobileAddress : A-36, Mohan Co-operative Industrial Address : A-36, Mohan Co-operative Industrial estate, Mathura road, New Delhi- 110044 Indiaestate, Mathura road, New Delhi- 110044 IndiaMobile Service area : Haryana, Kerala, Uttar Mobile Service area : Haryana, Kerala, Uttar pradeshpradeshTelephone : 91 -11-2695 9364/236Telephone : 91 -11-2695 9364/236Escotel web site : Escotel web site : www.escotelmobile.comwww.escotelmobile.com

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Hutchison Essar Telecom LimitedHutchison Essar Telecom Limited - Brand name - Brand name HutchHutchAddress : C-48, Okhla Industrial Area Phase II, New Address : C-48, Okhla Industrial Area Phase II, New Delhi 110020 . IndiaDelhi 110020 . IndiaMobile service area : Delhi (Metro)Mobile service area : Delhi (Metro)Telephone : 91 -11-2638 5004Telephone : 91 -11-2638 5004web site : web site : www.hutch.co.inwww.hutch.co.in

Hutchison Max Telecom Limited Hutchison Max Telecom Limited - Brand name - Brand name OrangeOrangeAddress : Stanrose House, 1st flr Standard Mills Address : Stanrose House, 1st flr Standard Mills compound, New Prabhadevi Road, Mumbai -25 . compound, New Prabhadevi Road, Mumbai -25 . IndiaIndiaTelephone :Telephone :Mobile service area : Mumbai city (Metro)Mobile service area : Mumbai city (Metro)Web site : Web site : www.orange.co.inwww.orange.co.in

ThanksThanks

SourcesSources

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www.m-indya.com/gsm/CDMA-www.m-indya.com/gsm/CDMA-vs-GSM.htm vs-GSM.htm

www.mouthshut.com/review/GSwww.mouthshut.com/review/GSM_Mobile_Technology_Vs_CDM_Mobile_Technology_Vs_CDMA_Mobile_Technology-65504-MA_Mobile_Technology-65504-1.html - 70k 1.html - 70k