In this study, the authors study the robust resource allocation problem for orthogonal
frequency division multiplexing‐based cooperative cognitive radio networks (CRNs) with …

We develop robust resource-allocation schemes for a cognitive radio network (CRN), where
the secondary users (SUs) try to communicate with each other from different small cell …

In this paper, we develop robust power allocation schemes for cognitive radio networks
(CRNs) that can operate in multiple bands with cooperative relays considering uncertainty …

The authors study robust beamforming and power allocation in cognitive relay networks
using several relays in the secondary link. The channel state information is imperfect …

The power allocation problem in orthogonal frequency division multiplexing‐based cognitive
radio (CR) networks with cooperative relays has been investigated here, where both the …

Cognitive Radio (CR) is an attractive technology to deal with current spectrum scarcity
problem, while cooperative relay can make distributed receivers benefit from spatial diversity …

More and more mobile devices join in the wireless networks, it has become a challenging
problem how to mitigating the interferences and improving the energy efficiency in dynamic …

The authors consider the resource allocation issue in multiple‐input multiple‐output‐
orthogonal frequency division multiplexing‐based cooperative cognitive radio networks with …

In this paper, we study relay selection and power allocation in multiple decode-and-forward
(DF) relay assisted OFDM cognitive radio (CR) relay networks. We consider the scenario …

This letter investigates the resource optimization problem for the multi-user multi-relay
decode-forward (DF) cognitive radio networks. The novel optimization metric, namely the …