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