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In this paper we present a distributed spectrum sensing technique based on a ring-formulation of the cognitive radio (CR) nodes in a network. The CR nodes in a network form a ring based on a particular criteria and distributes the local spectrum sensing decisions along the ring in a sequential manner to the successive CR nodes. Considering this method, we eliminate the requirement for all the CR nodes...
In this letter, a closed form expression for the conditional bit error probability (BEP) with static timing errors of binary phase shift keying (BPSK) modulation over a Rayleigh fading channel is presented. The expressions for average BEP are then given for dynamic timing errors assuming the normalized timing error has either a Gaussian probability density function (pdf) or a Tikhonov pdf. Numerical...
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