An Emergent Self-Awareness Module for Physical Layer Security in Cognitive UAV Radios

Filter Bank Multitone: a Physical Layer Candidate for Cognitive Radios

Two muticarrier methods called filtered multitone (FMT) and cosine modulated multitone (CMT) are presented as physical layer protocols for cognitive radio networks. We compare FMT and CMT to orthogonal frequency division multiplexing (OFMD), and show that both FMT and CMT offer higher spectral efficiency. Furthermore, we show that the filter banks in the receiver front-end can also used for cha...

Security of Spectrum Learning in Cognitive Radios

Due to delay and energy constraints, a cognitive radio may not be able to perform spectrum sensing in all available channels. Therefore, a sensing policy is needed to decide which channels to sense. The channel selection problem is the problem of designing such a sensing policy to maximize throughput while avoiding interference to primary users. The channel selection problem can be formulated a...

Exploiting Cyclostationarity for Radio Environmental Awareness in Cognitive Radios

On Physical Layer Security for Cognitive Radio Networks

The Security of Physical Layer in Cognitive Radio Networks

—Cognitive Radio (CR) is a novel technology that promises to solve the lack of spectrum by allowing secondary users to use licensed band, so that they can coexist with primary users without causing interference to their communications. With the development of CR, extending to the level of network, cognitive radio networks (CRNs) emerge as the times require. Nowadays the operational aspects of ...