On Partially Overlapping Coexistence for Dynamic Spectrum Access in Cognitive

Ebrahim Bedeer Mohamed, Mohammed Marey, Octavia A. Dobre, Kareem E. Baddour

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4 Citations (Scopus)
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In this paper, we study partially overlapping coexistence scenarios in cognitive radio environment. We consider an Orthogonal Frequency Division Multiplexing (OFDM) cognitive system coexisting with a narrow-band (NB) and an OFDM primary system, respectively. We focus on finding the minimum frequency separation between the coexisting systems to meet a certain target BER. Windowing and nulling are used as simple techniques to reduce the OFDM out-of-band radiations, and, hence decrease the separation. The effect of these techniques on the OFDM spectral efficiency and PAPR is also studied.



  • Bit error rate
  • Interference
  • Cognitive radio
  • spectrum access
  • Coexistence

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