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Mobile Computing - Multiple Access, Study notes of Mobile Computing

In this document topics covered which are What is Multiple Access, Code multiplex, Time and frequency Multiplex, Multiplexing, Problem, traditional ways.

Typology: Study notes

2010/2011

Uploaded on 09/04/2011

amit-mohta
amit-mohta 🇮🇳

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Multiple users want to communicate in a common geographic area
Cellular Example: Many people want to talk on their cell phones. Each
phone must communicate with a base station.
Imagine if only one person could talk on their cell phone at a time!
Problem: How should we share our resources so that as many users as
possible can communicate simultaneously
The concept behind multiple access is to permit a number of users to
share a common channel. The two traditional ways of multiple access
are Frequency Division Multiple Access (FDMA) and Time Division
Multiple Access (TDMA).
What is Multiple Access
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  • (^) Multiple users want to communicate in a common geographic area
  • (^) Cellular Example: Many people want to talk on their cell phones. Each phone must communicate with a base station.
  • (^) Imagine if only one person could talk on their cell phone at a time!
  • (^) Problem : How should we share our resources so that as many users as possible can communicate simultaneously
  • (^) The concept behind multiple access is to permit a number of users to share a common channel. The two traditional ways of multiple access are Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA).

What is Multiple Access