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On the Capacity of Full-Duplex Causal Cognitive Interference Channels to within a Constant Gap

Abstract : This paper considers the two-user Gaussian Causal Cognitive Interference Channel (GCCIC), which consists of two source-destination pairs that share the same channel and where one full-duplex cognitive source can causally learn the message of the primary source through a noisy link. The GCCIC is an interference channel with unilateral source cooperation that models practical cognitive radio networks. Different achievable strategies are shown to be at most a finite number of bits away from an outer bound for a set of the channel parameters that, roughly speaking, excludes the case of weak interference at both receivers.
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Submitted on : Wednesday, July 23, 2014 - 7:00:18 AM
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Martina Cardone, Daniela Tuninetti, Raymond Knopp, Umer Salim. On the Capacity of Full-Duplex Causal Cognitive Interference Channels to within a Constant Gap. IEEE International Conference on Communications (ICC), 2014, Jun 2014, Australia. pp.1-5. ⟨hal-00981886⟩

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