Opportunistic spectrum access (OSA) has been regarded as the most promising approach to
solve the paradox between spectrum scarcity and waste. Intelligent decision making is key …

Mobile data offloading is a promising approach to alleviate network congestion and
enhance quality of service (QoS) in mobile cellular networks. In this paper, we investigate …

The problem of channel quality prediction in cognitive radio networks is investigated in this
paper. First, the spectrum sensing process is modeled as a Non-Stationary Hidden Markov …

Providing proper economic incentives to all parties involved is essential for the success of
dynamic spectrum access. Market-driven secondary spectrum trading is an effective way to …

User cooperation although improves performance of wireless systems, it requires incentives
for the potential cooperating nodes to spend their energy acting as relays. Moreover, these …

Cognitive radio is a novel communication paradigm that can significantly improve spectrum
utilization by allowing the cognitive radio users to dynamically utilize the licensed spectrum …

Spectrum trading creates more accessing opportunities for secondary users (SUs) and
economically benefits the primary users (PUs). However, it is challenging to implement …

In this paper, we formulate a contract design problem where a primary license holder wishes
to profit from its excess spectrum capacity by selling it to potential secondary users/buyers. It …

The rapid growth of wireless devices and services exacerbates the problem of spectrum
scarcity in wireless networks. Recently, spectrum auction has emerged as one of the most …

In cognitive radio networks, the main objective of spectrum sensing is to exploit spectrum
holes left by the primary users (PUs). Different PUs' traffic patterns might provide different …