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XOR as Access Channel: Coordinated vs Uncoordinated Model for Token Ring Application

Explore the XOR access channel model comparing coordinated and uncoordinated capacity for a token ring application, including coding aspects.

jamalia-erickson
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XOR as Access Channel: Coordinated vs Uncoordinated Model for Token Ring Application

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Presentation Transcript

  1. the XOR as access channel A.J. Han Vinck University of Essen Germany

  2. content • The XOR as access channel • Model: coordinated versus uncoordinated • Capacity for large number of users • Application: token ring • Coding aspects

  3. The model

  4. Coordinated versus „random“

  5. example

  6. capacity

  7. Token ring Header: T positions: active = 1 TDMA 0 1 0 0 1 1 0 1 Header: n-k positions 0 1 0 0 1 NEW i becomes active: H1:= Ho . XOR . address(i) i becomes inactive: H2 : = H1 . XOR. address(i) = Ho

  8. Coding

  9. decoding

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