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Q.

What is the difference between GSM and CDMA?

Tags: electronics, science, technology
Asked by gal, 17 May '10 09:24 am
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Answers (7)

 
1.

In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). For the most part, both networks have fairly concentrated coverage in major cities and along major highways. GSM carriers, however, have roaming contracts with other GSM carriers, allowing wider coverage of more rural areas, generally speaking, often without roaming charges to the customer. CDMA networks may not cover rural areas as well as GSM carriers, and though they may contract with other CDMA carries for roaming in more rural areas, the charge to the customer will generally be significantly higher. Another factor that will help you to determine an important difference between use of GSM and CDMA is use of SIM cards. GSM uses SIM cards and can be activated instantly but CDMA doesn't use this modality.
Answered by sumati gayki, 17 May '10 09:39 am

 
  
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2.

CDMA stands for Code Division Multiple Access and GSM stands for Global system for Mobile Communication. In CDMA phones the software is integral with the phone instrument and in the case of GSM phones it is through the SIM Card....CDMA phone instruments are dedicated to the service provider. GSM phone instruments are portable across service providers through SIM cards.
Answered by ashok sharma, 17 May '10 09:31 am

 
  
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3.

1. GSM (Global System for Mobile Communications).............. GSM is the branded term referring to a particular use of TDMA (Time-Division Multiple Access) technology. GSM is the dominant technology used around the globe and is available in more than 100 countries. It is the standard for communication for most of Asia and Europe. GSM operates on four separate frequencies: Youll find the 900MHz and 1,800MHz bands in Europe and Asia and the 850MHz and 1,900MHz (sometimes referred to as 1.9GHz) bands in North America and Latin America. GSM allows for eight simultaneous calls on the same radio frequency and uses narrowband TDMA, the technology that enables digital transmissions between a mobile phone and a base station. With TDMA the frequency band is divided into multiple channels which are then stacked together into a single stream, hence the term narrowband. This technology allows several callers to share the same channel at the same time.

2. CDMA (Code Division Multiple Access)... ...more
Answered by Pardeep kapoor, 17 May '10 09:26 am

 
  
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4.

GSM (Global System for Mobile Communications).............. GSM is the branded term referring to a particular use of TDMA (Time-Division Multiple Access) technology. GSM is the dominant technology used around the globe and is available in more than 100 countries. It is the standard for communication for most of Asia and Europe. GSM operates on four separate frequencies: Youll find the 900MHz and 1,800MHz bands in Europe and Asia and the 850MHz and 1,900MHz (sometimes referred to as 1.9GHz) bands in North America and Latin America. GSM allows for eight simultaneous calls on the same radio frequency and uses narrowband TDMA, the technology that enables digital transmissions between a mobile phone and a base station. With TDMA the frequency band is divided into multiple channels which are then stacked together into a single stream, hence the term narrowband. This technology allows several callers to share the same channel at the same time.

2. CDMA (Code Division Multiple Access)....... ...more
Answered by Ataur Rahman, 24 Jul '13 05:07 pm

 
  
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5.

Gsm is global system for mobile communication. it uses fdma
& tdma.
cdma:- it stands for code division mutiple access.
gsm is stands for global system for mobile communication. it
use tdma & fdma techniques as access mechanism . in gsm we
devide bandwidth in to time slots for better utilization of
bandwidth.

cdma stands for code devision muliple access it use cdma
techniques as access mechanism . in cdma we allocate a ...more
Answered by sudesh, 17 May '10 09:48 am

 
  
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6.

The GSM Association is an international organization founded in 1987, dedicated to providing, developing, and overseeing the worldwide wireless standard of GSM. CDMA, a proprietary standard designed by Qualcomm in the United States, has been the dominant network standard for North America and parts of Asia. However, GSM networks continue to make inroads in the United States, as CDMA networks make progress in other parts of the world. There are camps on both sides that firmly believe either GSM or CDMA architecture is superior to the other. That said, to the non-invested consumer who simply wants bottom line information to make a choice, the following considerations may be helpful.
Answered by Arun, 17 May '10 09:39 am

 
  
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7.

Sim
Answered by dhanendra kumar jain, 17 May '10 09:36 am

 
  
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