Soon Xin Ng (Michael)
University of Southampton, UK
Title: Cooperative cognitive radio for next-generation communications
Biography
Biography: Soon Xin Ng (Michael)
Abstract
In order to mitigate the shortage of wireless spectrum, the techniques of cooperative communication and cognitive radio can be jointly amalgamated for the sake of improving the spectral efficiency and hence the overall system throughput. More explicitly, a cooperative communication scheme relies on user cooperation for achieving performance gain with the aid of relaying. On the other hand, cognitive radio is an intelligent technique that could reconfigure its transmission mode based on the channel condition, for achieving an efficient transmission. A cooperative cognitive radio (CCR) scheme can be designed for enabling licensed users, referred to as primary users (PUs), to transmit at a lower power and/or at a higher throughput, while at the same time enabling the unlicensed users, referred to as cognitive users (CUs), to communicate using the bandwidth released. Additionally, game-theoretic techniques can be employed for negotiating between the PUs and the CUs for determining the specific fraction of relaying and active transmission time. In this talk, a range of cooperative communication and cognitive radio schemes as well as related game-theoretic models will be reviewed. Attractive CCR schemes are investigated and proposed for next-generation wireless communications networks. The joint design of coding, modulation, user-cooperation, and CCR techniques could lead to significant benefits for all communicating users, by exploiting the available resources efficiently and intelligently.