In order to perform reliable communications, a system needs to have sufficient information
about its operational environment, such as spectral resources and propagation …

A cognitive radar adapts the transmit waveform in response to changes in the radar and
target environment. In this work, we analyze the recently proposed sub-Nyquist cognitive …

Wireless networks with ranging and localization capabilities enable new applications. The
performance of wireless ranging depends on both the transmission technique and the …

In this paper, we give an introductory presentation on the state of the art of the key
technologies in the field of cognitive radio, including spectrum awareness, cognitive engine …

Theoretical limits on time-of-arrival (equivalently, range) estimation are derived for
multicarrier systems in the presence of interference. Specifically, closed-form expressions …

This paper presents our design of a long-term evolution advanced (LTE-A) system
enhanced with cognitive radio (CR) technology. Introductions are given on the key …

In this paper, we consider the implications of spectrum heterogeneity on connectivity and
routing in a Cognitive Radio Ad Hoc Network (CRAHN). We study the Laplacian spectrum of …

In this paper, a generalized logarithmic hyperbolic secant (GLHS) function is introduced that
can effectively suppress impulsive noise while guarding the signal of interest from damage …

In this paper, we study two important quality of service (QoS) parameters of dynamic
spectrum access (DSA) networks with multiple primary and secondary users. We assume …

Accurate information regarding a cognitive radio user's location and environment can
enhance the adaptive and spectral awareness capabilities of cognitive radio systems. In this …