Listen-and-Talk: Full-duplex Cognitive Radio Networks

Provided by: Cornell University Topic: Mobility Date Added: Jul 2014 Format: PDF
In traditional cognitive radio networks, Secondary Users (SUs) typically access the spectrum of Primary Users (PUs) by a two-stage "Listen-Before-Talk" (LBT) protocol, i.e., SUs sense the spectrum holes in the first stage before transmit in the second stage. In this paper, the authors propose a novel "Listen-And-Talk" (LAT) protocol with the help of the Full-Duplex (FD) technique that allows SUs to simultaneously sense and access the vacant spectrum. Analysis of sensing performance and SU's throughput are given for the proposed LAT protocol.

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