The cdma is based on spread spectrum technology which makes the optimal use of available bandwidth. Gsm is a very straightforward standard, whereas cdma is somewhat complicated. Moreover, cdma is the infrastructure on which all 3g networks are based for both gsm and cdma carriers. As the european union permissions gsm use, so cdma is not supported in europe. Both gsm and cdma standards get multiple access, meaning that a large number of calls can go through a single cell phone tower. The experiment was based on a rural area in lagos state, nigeria called agbado. The most major difference between cdma and wcdma is in the group of technology that it is grouped with. Another difference between gsm and cdma is in the data transfer methods. The main distinction between gsm and cdma is that in gsm, the customer information is put on a sim card which. In second and third generation wireless communication a. On the other hand, in cdma the network identifies a handset by the information stored in the internal memory and hence, its handset specific. Tdmafdma, cell frequency planning is more tedium task as frequency and time planning need to be carried out in cdma frequency planning is minimal.
Difference between gsm and cdma the worlds renowned mobile phone network technologies are gsm global system for mobile communication and cdma code division multiple access. Many of those people who are planning to buy a mobile phone think hard whether to go for a cdma phone or a gsm phone. Cdma and gsm are two different types of standards that are available for transmitting data and mobile voice services on a cell phone or mobile phone. Most people do not understand the difference between cdma and gsm phones. In the 4g and 5g world, everyone will be using the same radio technology, but they.
How to edit a pdf how to set up twofactor authentication how to set up and use a. Following table mentions difference between cdma and gsm technologies. What is the difference between tdma, cdma and gsm cell. Sep 27, 2016 the basic difference between gsm and cdma is that the gsm is a sim specific i. Nov 24, 2009 phone selection is always better on gsm. A firstrate difference is the fact that gsm cellular telephones use sim playing cards, whilst cdma cell phones are directly linked to the carrier. These questions are very useful as viva questions also. Even canadas bell and telus started an hsdpa network, making them able to provide gsm phone selection. Gsm global system for mobile communications is a standard set developed by the european telecommunications standards institute etsi to describe. The gsm association is an international organization of cellular carriers founded in 1987, provide coverage worldwide using the european etsi wireless standard gsm. Gsm stands for global system for mobile communication, while cdma stands for code division multiple access gsm uses fdma frequency division multiple access and tdma time division multiple access.
Backbone network the network evolution from gsm and radio access from utra the third generation mobile network evolved from the second generation systems such as gsm and gprs gsm. This carrier is divided into a number of time slots and each. These two technologies differ in the way calls and data travel over the mobile phone networks take place. Gsm vs cdma difference between cdma and gsm youtube. The regulation requires cdma vendors to offer handsets to the users, for which the customers cannot trade their carriers. The 1900 mhz frequency band is used mainly in the united states.
In cities and densely populated areas, there are often high concentrations of gsm and cdma. Gsm s highspeed wireless data technology, gprs general packet radio service, usually offers a slower data bandwidth for wireless data connection than cdma s highspeed technology 1xrtt, short for single carrier radio transmission technology, which has the capability of. Tdma, or time division multiple access, sorts messages into time slots in order to send them. Pdf comparative analysis of gsm network and is95 cdma. The primary difference between the two is how you divide the radio waves between different phones. After founding of the etsi european telecommunication standard institute in 1989, gsm became the popular technical standard in most countries. Technology used, fdmafrequency division multiple access and tdma time. The gateway msc or gmsc the purpose of which is to query the hlr and determine the location of the subscriber. Likewise the wcdma specifications are published on.
Gsm aka tdma or time division multiple access has phones take turns talking. Difference between cdma and wcdma difference between. On comparing both the technologies gsm has some limitation when the call quality is concerned but still has. These two technologies differ in the way calls and data travel over the mobile phone networks. It can accommodate more users per mhz of bandwidth than any other technology. Difference between virtual private network vpn and multiprotocol label switching mpls difference between gsm and cdma gsm stands for global system for mobile communication, while cdma stands for code division multiple access gsm uses fdma frequency division multiple access and tdma time division multiple access. Gsm handsets came with a sim card slot, while cdma phones did not. Difference between gsm and cdma know the technical differences. In north america, especially in rural areas, more coverage is offered by cdma as compared to gsm. What is difference between gsm and cdma technology. But because most phones still need to support 2g and 3g networks even to this. Gsms highspeed wireless data technology, gprs general packet radio service, usually offers a slower data bandwidth for wireless data connection than cdmas highspeed technology 1xrtt, short for single carrier radio transmission technology, which has the capability of. Gsm is in use over 80% of the worlds mobile networks in over 210 countries as compared to cdma.
Difference between 3g and 4g technology with comparison. Cdma has no builtin limit to the number of concurrent users. Gsm global system for mobile communications is a standard set developed by the. Cons of gsm probably the only minus of gsm technology is that it is not accessible in most of the usa, which is ruled by cdma tech cons of cdma cdma, though popular, is more recent than gsm. May 03, 2007 gsm has a fixed maximum cell site range of 35 km, which is imposed by technical limitations. Cdma is very useful as well as interesting from a buyers perspective.
Cdma as one of the major problems facing the development of telecommunications, bandwidth demand has driven the search for protocols that could be used to maximize bandwidth efficiency. This page covers gsm questionnaire set prepared by experienced specialists in gsm gprs domain. Gsm is in use by 76% of users as compared to cdma which is in use by 24% users. Sep 23, 2017 many of those people who are planning to buy a mobile phone think hard whether to go for a cdma phone or a gsm phone. Cdma is shorthand for code division multiple access, which is one of the major radio systems that are used in cell phones. Cdma is almost exclusively used in the united states and some parts of canada and japan. Gsm supports transmitting data and voice both at once, but cdma have not this feature. Apr 15, 2020 understanding the difference between gsm and cdma will allow you to choose a carrier that uses the preferable network technology for your needs.
Apple iphone 11 pro max full phone specifications gsm arena. The main distinction between gsm and cdma is that in gsm, the customer information is put on a sim card. If it was much more better, there would be a world wide competition between gsm and cdma. The complete specifications for cdma are published on welcome to the 3gpp2 homepage. Super retina xdr oled display, apple a bionic chipset, 3969 mah battery, 512 gb storage, 4 gb ram, scratchresistant glass. Difference between gsm and 3g network technology compare. Cdma code division multiple access has phones talk on slightly different frequencies. Multiple accesses multiplexing for short enable multiple signals to occupy a single communications channel. The basic difference between gsm and cdma is that the gsm is a sim specific i. They were both developed in the early nineties for 2g connectivity. In gsm, the entire frequency band is not available to the enduser, while in cdma. Difference between cdma and cdma pdf semantic scholar. The question is pretty understandable and a good one too. Gsm and cdma the cellular mobile service is being used everywhere in the world today.
But engineers couldnt agree on which one was the best. Nov 15, 2019 understanding the difference between cdma and gsm two hugely important standards for radio telecommunications is crucial before buying a new smartphone or switching carriers. Cdma is one of the types of mobile connections for making calls where as gprs is a technology for internet connections through a mobile phone. Cdma or code division multiple access is often found in the u. Two basic technologies in mobile phones, cdma and gsm, represent a gap you cant cross. The allied forces developed the technology during world war ii. Gsm adjunct systems gsm standards define that certain adjunct or secondary systems work with gsm technology. As gsm is an international standard, so its better to use gsm in international roaming. Gsm and cdma are different technologies that phones use to connect. This is a brief tutorial that describes all the technical terms in a simple language to make it understandable for all the interested readers. This paper discusses the technical differences between the worlds two biggest wireless networks gsm and cdma.
S and russia, though gsm is also present in those countries. Lte standards are part of the latest 3gpp releases, which are considered as 4th generation 4g, and wcdma is the older technology which was specified as 3rd. Umts is built on the global system for mobile communications gsm standard. What is the difference between tdma, cdma and gsm cell phones. This article discusses on the difference between gsm and cdma in terms of technology, security, global reach, sim card, flexibility, radiation emitted.
What are the technical differences between cdma and gsm. The key difference between the two is that gsm is a standard and cdma is a technology, but gsm, over the years has come close to attaining technological status. Gsm jobs are available at various levels such as testing,maintenance,installation,development and so on. Gsm and cdma are the most successful cell phone technologies present in world, cdma handsets are chip based where as gsm handsets uses sim cards, using the gprs and edge facility gsm is successful. It allows each user to transmit over the entire frequency. Both these technologies have been in market for quite some time with a number of service. In gsm, the core network consists of two service domains cs circuit. Gsm air interface uses separate time slots in separate frequency channels for each user, so that, there will be less.
Difference between gsm and cdma with comparison chart. Now reliance is launching removable user identity module rium based cdma phones. Gsm global system for mobile communication and 3g 3rd generation mobile technology are both mobile communication technologies that have been evolved over the time. Radio access between the mobile terminal and the base station 2.
The history gsm during the early 1980s, analog cellular telephone systems were experiencing rapid growth in europe, particularly in scandinavia and the united kingdom, but also in france and germany. Cdma doesnt allows to have a call and use data at same time. Cdma is a 2g technology and is a direct competitor to gsm, which is the most widely deployed technology. Gsm global system for mobile communication and cdma code division multiple access are two dominant technologies for mobile communication. Aug 11, 2009 the primary difference between the two is how you divide the radio waves between different phones. The entire frequency band is divided into chunks and. Gsm vs cdma difference between gsm and cdma elprocus. Understanding the difference between gsm and cdma will allow you to choose a carrier that uses the preferable network technology for your needs. Gsm vs cdma whats the difference between the two technologies.
The cdma gsm split ended, in theory, as carriers all switched to lte, a single, global 4g standard, starting in 2010. In this video i will go to show you difference between gsm and cdma technology. May 01, 2019 cdma or code division multiple access is often found in the u. A gsm phone is a digital cellular technology used for transmitting mobile. Wcdma wideband code division multiple access and lte long term evolution are mobile communication technologies that falls under the 3rd generation partnership project 3gpp releases. Ijcat international journal of computing and technology, volume 1, issue 8. Difference between cdma and gsm categorized under communication, technology difference between cdma and gsm when we buy a mobile phone, we usually dont concern ourselves with the standards or technologies that our mobile phone uses. Both the technologies can be used with 3g standard phones, but 3g gsm speeds can be faster than 3g cdma speeds. It allows each user to transfer over the entire frequency spectrum all the time. We take a closer look at some of the differences between gsm and. However, the one chief difference between the two standards involves the way the data is transformed through the radio waves a smartphone receives and broadcasts. Evolutionary analysis of gsm, umts and lte mobile network.
Difference between wcdma and lte compare the difference. Before the advent of 4g lte, the obvious difference between gsm and cdma devices were with regards to the sim card. The gsm operates on the wedge spectrum called a carrier. In gsm, the entire frequency band is not available to the enduser, while in cdma the entire frequency band is available to the enduser. So it has more flaws than the latter this method of communication cannot offer international roaming and many other advanced user services 12. This technology makes optimal use of available bandwidth and is based on spread spectrum technology. Difference between cdma and gsm difference between. The technicality of cdma technology has given significant advantages over other parallel technologies in terms of spectrum efficiency and overall performance. In gsm, the entire frequency band is not available to the enduser, while in cdma the entire frequency band is available to the. So, in the us the fcc settled on a dualmode route that required either gsm or cdma. Gprs enables to surf the internet from a mobile phone. The global system for mobile communications gsm which is a standard for 2g second generation cellular networks has created an avenue for the development of 3g third generation and 4g fourth generation cellular network standards such as universal mobile telecommunications system umts and long term evolution lte. Gsm and cdma are two dominant technologies in the world of mobile communication. However, lte, which stands for longterm evolution, is fast becoming ubiquitous.