Gsm and cdma are the most successful cell phone technologies present in. 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. This pioneering innovation was later standardized as is95 in july 1993 by the telecommunications industry association tia and. Once youve activated one with a number, that sim card will become void if you transfer the number elsewhere e. 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. Both gsm and cdma use cdma for 3g data gsm uses wideband cdma. This video is a brief explanation of the differences between gsm and cdma networks.
It is the most secure mode of communication because of its spread spectrum property. Fundamentals of communications access technologies. Verizon is heading toward a gigabit, cdmafree future pcmag. Gsm global system for mobile communication and cdma code division multiple access are two dominant technologies for mobile. Only in combination with tdma, fdma or cdma useful. The main distinction between gsm and cdma is that gsm is restricted to a sim card thats used with the movable. In gsm, the core network consists of two service domains cs circuit. Gsm global system for mobile communications is a standard set developed by the. Gsm and cdma the cellular mobile service is being used everywhere in the. Luckily, us mobile has excellent cellular coverage using the best gsm and cdma networks in the us.
The signal difference between ting gsm and cdma depends primarily on your location. Difference between gsm and cdma with comparison chart. To upgrade your phone, you simply swap the sim card in the back. Cdma represents multiplexing between numerous signals for optimal bandwidth availability. Cdma and tmobile are gsm, will i need a new phone since theyre merging.
Still faces some problems, higher complexity, lowered expectations, will be integrated with tdma or fdma. Technically gsm global system for mobile communications, originally from groupe special mobile. A unique code is provided to every user and all the conversation between two users are encoded ensuring a greater level of security for cdma users. But instead of being an mvno, sprinttmobile owns their own bandwidth, and could be the first major independent wireless provider. More security is provided in cdma technology as compared with the gsm technology as encryption is inbuilt in the cdma. With a few exceptions, anyone with a sprint phone will have to switch to a gsm phone once the merger. Gsm is more flexible than cdma as wide range of phones can be used with this service. Gsm pronounced geeessem is the most popular cell phone standard, and is used internationally, so youve probably heard about it in the context of gsm phones and gsm networks, especially when compared to cdma. Textnow, who is also an mvno subsidiary, actually uses sprints cdma bandwidth and tmobiles gsm bandwidth, depending on the type of device you are using and your geographical location. Gsm stands for global system for mobile communication, and unless you live in the united states or russia, this is.
Tmobile and sprint ask for merger approval slashdot. Verizon network execs opened up about gigabit lte, enhanced voice, and how getting rid of cdma. 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. Cdma is almost exclusively used in the united states and some parts of canada and japan. It is used in cellular communication similar to gsm and is a second generation and third generation standard for mobile networks. The sim card can be placed in any gsm supporting hardware and can have access to all the contacts.
Switching gsm phones between different networks is easier than with cdma phones. The basic difference between gsm and cdma is that the gsm is a sim specific i. It is based on egprs which designed as a high capacity, longrange, low complexity and low energy cellular system for iot communications. Gsm stands for global system for mobile communication. Code division multiple access refer to the two primary technologies used by wireless carriers throughout the world to. Whats the difference between these cellular standards. If you wanted to upgrade to another phone, you would have to get in touch with the network carrier, deactivate the old device and activate the new one. This article is all about the difference between gsm and cdma. These two designs were merged to produce a regular pulse excitation lpc. Fdma, tdma, cdma, ofdma, and sdma an introduction to the access technologies that allow multiple users to share a. Evolutionary analysis of gsm, umts and lte mobile network. Codedivision multiple access cdma is a channel access method used by various radio. 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.
On the opposite hands, the cdma is french telephone specific. Comparison between gsm and cdma gms vs cdma both the gsm and cdma are mobile telecommunication standards and work completely differently. Evolutionary analysis of gsm, umts and lte mobile network architectures paschal a. Gsm and gprs are used in iot gsm iot ec gsm iot for extended coverage is a standardbased low power wide area technology. For applications currently relying upon quicklydisappearing traditional phone lines, starlink wireless communicators can be used for primary. These two technologies differ in the way calls and data travel over the mobile phone networks. Compares and contrasts all differences between iphone 5s models a1533 gsm cdma, a1453, a1457, a1528, a1530 and a1518.
Standards in fixed networks, together with fdma or sdma used in many mobile networks. In other words, cdma is a handsetbased standard, with a phone number linked to a particular device. Irving2,b 1 department of computer science, federal university lafia, nasarawa state, nigeria 2 department of computing, engineering and technology, university of. The gsm base station subsystem bss and the wcdma radio access network ran are both connected to the gsm core network for providing a radio connection to the handset. Gsm and cdma are competing wireless technologies with gsm enjoying about an 82% market share globally.
Categorized under communication,technology difference between gsm and umts gsm vs umts gsm is an abbreviation of global system for mobile communication, originally it is known as group special mobile. Gsm handsets came with a sim card slot, while cdma phones did not. Understanding the difference between gsm and cdma will allow you to choose a carrier that uses the preferable network technology for your needs. Neither is particularly good at penetrating buildings. Gsm vs cdma call quality and reception ting help center. 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 gsm and umts difference between. Sprint is a cdma network, and tmobile is gsm, and most phones cant work on both networks.
Probably much in the same way as straight talk an mvno subsidiary network that uses both gsm and cdma technology. If multiple users transmit a spreadspectrum signal at the same time, the receiver will still be able to distinguish between users, provided that each user has a unique code that has a sufficiently low crosscorrelation with the other codes. Gsm uses tmobile towers and cdma uses sprint towers. 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.
Cdma and gsm are the two most essential technologies for mobile telephony. There are two major differences between the two protocols. How will a tmobilesprint merger work if one is a gsm and. The only major difference is in how voice is handled. Radio access between the mobile terminal and the base station 2. Difference between gsm and 3g network technology compare. Does anyone notice a big difference between global and lte and cdma settings on the mode selection. The worlds renowned mobile phone network technologies are gsm global system for mobile. Asia boasts a wide deployment of cdma systems, thanks largely to. Global vs ltecdma vs lte, gsm or umts windows central. Whether you use a cdma or gsm network, it does not matter. Hi gabriel, while certain phones have the capability to connect to both cdma and gsm networks, our gsm sim cards are onetime use only. The chief gsm carriers in the united states are cingular wireless, recently merged with. Both the technologies can be used with 3g standard phones, but 3g gsm speeds can be faster than 3g cdma speeds.
Cellular technology is what mobile phone networks are based on, and its the technology that. You can put a sim from one phone into a newer one and all your info like phone number and plan will go to the new phone. Comparison of cdma and gsm mobile technology article pdf available in middle east journal of scientific research 12. Devices like mobile phones built for one standard of communication cannot operate on the other. Roethig if you have a cell phone, there is a hodgepodge of wireless technology behind it. Before the advent of 4g lte, the obvious difference between gsm and cdma devices were with regards to the sim card. 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. A guide to mobile network standards march 4, 20 by benjamin j. Mobile cellular technologies explained daniel miessler. Thats because all gsm phones use removable sim cards. Gsm vs 3g network technology gsm global system for mobile communication and 3g 3rd generation mobile technology are both mobile communication technolog compare the difference between similar terms. In second and third generation wireless communication a. When you make a call, the network assigns a time slot.
What matters is the coverage from the cdma and gsm networks. The document also directs cdma iphone owners to the iphone user guide, which spells out more limitations in cdma s implementation of conference calls. The main distinction between gsm and cdma is that in gsm, the customer information is put on a sim card which. In cities and densely populated areas, there are often high concentrations of gsm and cdma. Verizon is heading toward a gigabit, cdma free future. Both acronyms tend to group a lot of technologies managed by the same entities. Commonalities between qualcomm incorporated october. If youre shopping for a mobile phone, youre in for a lot of acronyms. Article pdf available in middle east journal of scientific research. Cdma multiple access by code division and gsm global mobile system are abbreviations of the two central radio systems used in mobile phones. Communication and cdma code division multiple access. On the other hand, in cdma the network identifies a handset by the information stored in the internal memory and hence, its handset specific. The key difference between gsm and cdma is the multiple access method they use.
The use of code division multiple access cdma for terrestrial cellular communications was first conceived in 1985 by dr. Gsm supports transmitting data and voice both at once, but cdma have not this feature. Understanding the difference between cdma and gsm two hugely important standards for radio telecommunications is crucial before buying a new smartphone or switching carriers. Difference between cdma and cdma pdf semantic scholar. You have probably come across these terms in the past when picking a mobile phone, or when first joining, or switching, network carriers, but.
1385 1670 1457 1172 1155 37 2 1497 1266 1033 106 322 264 890 1352 521 1357 440 551 1076 1466 1434 1022 1113 1116 556 342 597 34 1588 1518 30 1216 674 737 134 573 17 1350 343 1066 1003 1293 496 728 15 1239