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Nonuniform norm constraint (NNC)-based methods have numerous potential applications for sparse signal recovery from a small number of measurements. In this study, we propose a novel NNC sparse recovery algorithm. First, a particular solution is attained by the gradient-descent-like method, which searches for the minimum NNC solution. Second, general solutions can be derived in the framework of underdetermined...
Diversity gain can be achieved when cooperative transmission adopted in the wireless networks, which can provide much help to weak channel communication. Much has been done on the cooperative protocol and the performance analysis. In this paper, a new cooperative schedule is proposed. In which we have discussed three issues: when cooperative transmission should be adopted, how to choose the relay...
As the spatial dimension is exploited to further improve the spectrum utilization for cognitive radio (CR), the position of the primary user transmitter has become very useful information for the CR system. Most existing localization algorithms require transmitting power of the primary user, making them less practical. In this paper, we propose a practical semi range-based (PSRB) localization algorithm...
Cooperative communication usually shares a common model-one source, several relays and one destination. In this paper, we consider the multi-source scenario in a cell to carry on cooperative communication. However, multi-user setting might causes interference in the network, given this interference, the process of relaying selection applies SINR (signal to interference noise ratio) as a criterion...
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