When secondary users (SUs) in a cognitive radio network (CRN) are battery-powered
wireless devices, energy resources become very precious. Therefore, it is important that …

Providing proper economic incentives is essential for the success of dynamic spectrum
sharing. Cooperative spectrum sharing is one effective way to achieve this goal. In …

In this paper, we propose an agent-based spectrum trading model, where an agent can play
a third-party role in the spectrum trading process. Providing service to Secondary Users …

Cooperative sharing of spectrum among one primary user (PU) and multiple secondary
users (SUs) helps to enhance the throughput of the whole system. In this paper, we propose …

Recently, Cognitive network is growing more and more attractive due to its capability of
dynamic spectrum usage. When the dynamic spectrum is wideband, a sequential sensing …

Dynamic multichannel access is one of the most important issues in cognitive radio systems.
Its major challenge is to make best use of the limited frequency bands while protecting the …

In this paper, we address the spectrum portfolio optimization (SPO) question in the context of
secondary spectrum markets, where bandwidth (spectrum access rights) can be bought in …

Time efficiency is a basic characteristic for spectrum management and sharing in cognitive
radio networks (CRN). In this paper, we introduce an incremental metric time into dynamic …

Cognitive radio (CR) and Femto-cell (FC) are both attractive technologies due to their
marvelous potential to solve problems in current wireless communication systems. The …

This work presents a novel multi-layer modelling framework for the evolution of spectrum
markets of multiple spectrum/network operators that provide wireless access to users. It …