Comparison between mobile systems?

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SUMMARY

The discussion focuses on the key differences between the 2nd generation GSM (Global System for Mobile Communications) and the 4th generation LTE (Long-Term Evolution) mobile systems. GSM utilizes Gaussian Minimum Shift Keying (GMSK) modulation, while LTE employs Orthogonal Frequency-Division Multiplexing (OFDM). In terms of multiplexing, GSM uses Time Division Multiple Access (TDMA), whereas LTE utilizes a more complex OFDMA. The bit rate for GSM is limited to 9.6 kbps per subscriber, while LTE supports speeds exceeding 100 Mbps, significantly enhancing bandwidth and system complexity.

PREREQUISITES
  • Understanding of GSM (Global System for Mobile Communications) technology
  • Familiarity with LTE (Long-Term Evolution) standards
  • Knowledge of modulation techniques, specifically GMSK and OFDM
  • Awareness of multiplexing methods, including TDMA and OFDMA
NEXT STEPS
  • Research the technical specifications of GSM and LTE standards
  • Explore modulation techniques used in mobile communications
  • Study the impact of multiplexing methods on network performance
  • Investigate advancements in mobile system complexity and architecture
USEFUL FOR

Telecommunications engineers, mobile network planners, and anyone interested in the evolution of mobile communication technologies.

muh_j18
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what are the main differences between the 2nd generation (GSM) system and the 4th generation, in terms of:
-the type of modulation used.
-multiplexing with the base station.
-bit rate and bandwidth given for each supscriber.
- the complexity of the system.

if you could provide links for helpful websites that'd be great.
thanks in advance.
 
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sorry, may be i have asked in the wrong place.
 
muh_j18 said:
what are the main differences between the 2nd generation (GSM) system and the 4th generation, in terms of:
-the type of modulation used.
-multiplexing with the base station.
-bit rate and bandwidth given for each supscriber.
- the complexity of the system.

if you could provide links for helpful websites that'd be great.
thanks in advance.

The EE forum is the logical place to ask this, but I don't know the answer. What online resources have you checked in looking for the answers? I'm sure wikipedia covers at least some of your questions.
 

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