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Matlab model

Matlab model. CCBS Control Broadcast Transmission. Introduction . “Distributed Control using Cognitive Pilot Channels in a Centralized Cognitive Radio Network” Design a model in matlab . Modular and scalar program model for simulations and result analysis. Central Cognitive Base Station.

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Matlab model

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  1. Matlab model CCBS Control Broadcast Transmission

  2. Introduction • “Distributed Control using Cognitive Pilot Channels in a Centralized Cognitive Radio Network” • Design a model in matlab. • Modular and scalar program model for simulations and result analysis.

  3. Central Cognitive Base Station • Control Architecture

  4. Broadcast Transmission • Used for the control comunication between CCBS and Users • Every cycle time, the frecuency assignment would change.

  5. Broadcast Transmission

  6. Spectrum Frequency Division • For every transmission channel (frequency slot) sends a broadcast signal of 256 channels (sub frequency slots

  7. Sensing Model for Matlab • We supposed that receive a vector of position that have No-users, Primary Users and Cognitive User POSAR VECTOR TIPUS QUE REBEM DE SENSING • With free frecvecotr it is generated the PU and CRU vector considering POSAR VECTOR TIPUS DE PU I CRU!!!

  8. Matlab ModelPart I: CCBS Broadcast Transmission • How the base station comunicates this broadcast?

  9. CCBS Broadcast transmission scheme

  10. Bit assignment for broadcast channel

  11. Matlab results • Variables for first simulation • Num_frec_slot=10; • Num_subfrec_slot=10; • Vector provided by Sensing previous stage • Vector of PU • Vector of CRU

  12. Matlab results • Sensing • Broadcast signal transmitted

  13. Matlab results • Obtained user types vector for every time cycle • Broadcast signal simulated 1 1 0 3 1 1 2 3 1 3 1 0 3 0 0 0 3 0 3 0 0 0 0 1 0 2 0 0 0 3 0 0 0 0 0 0 1 3 0 0 0 0 0 0 0 3 0 2 3 0 0 0 0 0 0 1 0 0 1 3 1 0 0 0 0 1 0 3 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 1 0

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