CDMA vs GSM: Comparing Mobile Phone Technologies

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SUMMARY

The discussion centers on the fundamental differences between CDMA (Code Division Multiple Access) and GSM (Global System for Mobile Communications) mobile phone technologies. GSM, which utilizes TDMA (Time Division Multiple Access), allocates users to different time slots on a frequency channel, making it the most widely used mobile standard globally with over 2 billion subscribers. In contrast, CDMA allows multiple phones to transmit and receive simultaneously on the same frequency channel by encoding their signal streams with orthogonal codes. This distinction highlights the operational efficiencies and user capacity of each technology.

PREREQUISITES
  • Understanding of mobile communication standards
  • Familiarity with TDMA (Time Division Multiple Access)
  • Knowledge of CDMA (Code Division Multiple Access)
  • Basic concepts of signal encoding and frequency channels
NEXT STEPS
  • Research GSM technology and its global impact on mobile communications
  • Explore the mechanics of TDMA and its applications in mobile networks
  • Study CDMA technology and its advantages over other mobile standards
  • Investigate the differences in user capacity and performance between GSM and CDMA
USEFUL FOR

Mobile network engineers, telecommunications students, and anyone interested in understanding the technical differences between GSM and CDMA technologies.

samarth joshi
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What is the difference between cdma and gsm mobile phones related to their working
 
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GSM (Global System for Mobile communications) is the most widely used cell phone system or standard in the world, with over 2 billion subscribers. There are many differences beween GSM and CDMA, but at the grossest level it is this: GSM uses TDMA (time division multiple access), that is, it allocates users on a freqency channel to different time slots. CDMA (code division multiple access) transmits to/receives from multiple phones at the same time in the same frequency channel and separates them by encoding the signal streams with mathematically orthogonal codes.

I suggest that you look CDMA, TDMA and GSM on Wikipedia for introductory material.
 

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