Gsm is a very straightforward standard, whereas cdma is somewhat complicated. 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 acronyms tend to group a lot of technologies managed by the same entities. The main distinction between gsm and cdma is that in gsm, the customer. Cdma evdo technology is also flawed in the sense that it cannot transmit voice and data at the same time, while gsm can transmit both. 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. The standard boasts enhanced voice quality and functions as the base of highspeed, 4g data networks. Difference between gsm and umts difference between. There are two main types of mobile phones that are in use all over the world.
The type of phone you choose largely depends on what carrier you want to. The signal cannot be detected easily in cdma as compared to the signals of gsm, which are concentrated in the narrow bandwidth. Flexibility gsm is more flexible than cdma as wide range of phones can be used with this service. Gsm and cdma are two dominant technologies in the world of mobile communication. On the other hand, in cdma the network identifies a handset by the information stored in the internal memory and hence, its handset specific. 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. A unique code is provided to each and every user and all the conversations between two users are encoded ensuring a greater level of security for cdma users. Global system for mobile communications, essentially the standard in mobile technology. The key difference between gsm and cdma is the multiple access method they use.
What is the difference between cdma and gsm answers. Following table mentions difference between cdma and gsm technologies. This page provide comparison between ofdm vs cdma and mentions difference between ofdm and cdma technologies. Whereas, cdma stands for code division multiple access. Pdf the ability to communicate with the people on move has expanded a lot by using cell phones in the resent world especially for the business magnets. What matters is the coverage from the cdma and gsm networks. These two technologies differ in the way calls and data travel over the mobile phone networks take place. Global vs ltecdma vs lte, gsm or umts windows central. Difference between gsm and cdma with comparison chart.
Gsm stands for global system for mobile communication, while cdma stands for code division multiple access gsm uses the technology named fdma and tdma. Technically gsm global system for mobile communications, originally from groupe special mobile is a specification of an entire wireless network infrastructure, while cdma relates only to the air interface the radio portion of the technology. Luckily, us mobile has excellent cellular coverage using the best gsm and cdma networks in the us. If youre shopping for a mobile phone, youre in for a lot of acronyms.
The worlds renowned mobile phone network technologies are gsm global system for mobile. Cdma is very useful as well as interesting from a buyers perspective. Comparison between gsm and cdma gms vs cdma both the gsm and cdma are mobile telecommunication standards and work completely differently. Cdma code division multiple access and gsm global system for mobiles are the two main types of radio system used for mobile phones, but what is the difference between cdma and 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. The difference between gsm and cdma can be considered in terms of technology they use, the security factors, and the data transfer speeds, and so on. Currently, gsm is still the most widely used technology today while umts is still in its infancy, slowly creeping forward. Gsm is the dominant technology used around the globe and is available in more than 100 countries. Cdma handsets offer analog capabilities which the gsm dont offer. Gsm vs 3g network technology gsm global system for mobile communication and 3g 3rd generation mobile technology are both mobile communication technolog. Gsm vs cdma difference between gsm and cdma elprocus. Cdma multiple access by code division and gsm global mobile system are abbreviations of the two central radio systems used in mobile phones.
Gsm vs cdma difference between cdma and gsm youtube. In gsm, the entire frequency band is not available to the enduser, while in cdma the entire frequency band is available to the enduser. Difference between cdma and gsm cell phones synonym. The sim card can be placed in any gsm supporting hardware and can have access to all the contacts. Ive done a little research to understand the difference between gsm and cdma networks that carriers work on but am still a little confused. Understanding the difference between gsm and cdma will allow you to choose a carrier that uses the preferable network technology for your needs. But cdma devices do not use sim cards and use esn numbers instead. Difference between cdma and gsm gsm and cdma are two dominant technologies for mobile communication. Cdma is actually a newer technology than gsm and it offers some of the newest calling and data options evdo rev.
It allows each user to transfer over the entire frequency spectrum all the time. These two technologies differ the way in which the calls and data transfer takes place over a network and mobile. Gsm and cdma the cellular mobile service is being used everywhere in the world today. What is difference between cdma sim and gsm sim, which. Basics idea about cdma technology and its applications. S and russia, though gsm is also present in those countries. The entire frequency band is divided into chunks and. Cdma and gsm are radio technologies and mobile phone is just an antenna to recieve these radio signals. Lte technology represents an evolved form of gsm, and uses a similar technology to gsm networks. Network, network tower in each cell serves the mobile phone of that area. One runs on a gsm network sort of while the other runs on a cdma. The major difference between the two lies in terms of the technology they use, security factors, their global reach and the data transfer speeds.
The cellular mobile service is being used everywhere in the world today. Difference between cdma and cdma pdf semantic scholar. In gsm, information in addition as voice each are transmitted at the same time, while cdma have not this facility. It is the standard for communication for most of asia and europe. Gsm vs cdma slideshare 9272016 the basic difference between gsm and cdma is that gsm is specific to a sim card that is used with the mobile phone. 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. Even canadas bell and telus started an hsdpa network, making them able to provide gsm phone selection. If it was much more better, there would be a world wide competition between gsm and cdma. Devices like mobile phones built for one standard of communication cannot operate on the other. In cdma technology, more security is provided as compared with the gsm technology because encryption is inbuilt in the cdma. Gsm global system for mobile communication and cdma code division multiple access are two dominant technologies for mobile. Cellular carriers including sprint pcs, cingular wireless, verizon and tmobile use one or the other. The ability to upgrade or change to another handset is not easy with this technology because the network service information for the phone is put in the actual phone unlike gsm which uses sim card for this. Gsm is important, especially as 5g starts to take off. Gsm supports transmitting data and voice both at once, but cdma have not this feature. More security is provided in cdma technology as compared with the gsm technology as encryption is inbuilt in the cdma system and this technology uses the spread spectrum signal. When we compare both technologies, the gsm technology has some limitations as far as the quality is concerned. This article discusses on the difference between gsm and cdma in terms of technology, security, global reach, sim card, flexibility, radiation emitted.
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 in hindi technology. Gsm is typically based on tdma while umts is mainly cdmabased. This carrier is divided into a number of time slots and each. The difference between gsm and cdma is how data is received and broadcast in cellphones. Cdma and gsm are the two most essential technologies for mobile telephony. The basic difference between gsm and cdma is that gsm is specific to a sim card that is used with the mobile phone. Both gsm and cdma standards get multiple access, meaning that a large number of calls can go through a single cell phone tower. On the other hand, cdma uses evdo for data transferring. These two technologies differ the way in which the calls. Limited variety of the handset, because at present the major mobile companies use gsm technology. The cdma is based on spread spectrum technology which makes the optimal use of available bandwidth. Gsm global system for mobile communication and cdma code division multiple access are two dominant technologies for mobile communication.
Gsm has the upper hand in the market share due to its leniency with allowing the users to change their phones to any unlocked gsmcompatible phone by just placing their sim card into the new phone. Gsms highspeed wireless data technology, gprs general packet radio service, usually offers a slower data bandwidth for wireless data connection than cdmas highspeed technology, which. Let us discuss some more differences between gsm and cdma in the comparison chart shown below. Gsm uses edge as the technology for transferring data. Gsm handsets came with a sim card slot, while cdma phones did not. Difference between cdma and gsm difference between. Communication and cdma code division multiple access.
Both ofdm and cdma are wideband wireless digital communication systems widely used for fixed as well as mobile applications. These use sim cards in order to hold all of your data and to be able to connect to the network effectively. Tdma, or time division multiple access, sorts messages into time slots in order to send them. Code division multiple access, not as prominent as it once used to be.
This carrier is divided into time slots, and each user is assigned a different time slot. Gsm global system for mobile communications is a standard set developed by the european telecommunications standards institute etsi to describe. Difference between gsm and 3g network technology compare. Whether you use a cdma or gsm network, it does not matter. Latest posts by ian see all difference between cp and cpk june 8, 2010. Without delving too much into the technical details, this is what you should know. Gsm stands for global system for mobile communication. The gsm association is an international organization of cellular carriers founded in 1987, provide coverage worldwide using the european etsi wireless standard gsm. Switching gsm phones between different networks is easier than with cdma phones. Im trying to decide between two prepaid cell providers for my next phone. 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. 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. What is the difference between tdma, cdma and gsm cell. Another difference between gsm and cdma is in the data transfer methods.
Cdma or code division multiple access is often found in the u. The basic difference between gsm and cdma is that the gsm is a sim specific i. Gsm is based on wedge spectrum technology, and cdma is based on spread spectrum technology. The gsm is based on wedge spectrum called a carrier. Cdma is the foundation for mobile 3g technologies potential voice capacity improvements1 reference 1x 3x 14x analog 1980s gsm 1990s cdmaone 1990s 1 approximate total number of subscribers serviced within same spectrum based on amps 1g, gsm and cdmaone technology commercial deployed in 1990s. What is the difference between tdma, cdma and gsm cell phones.
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