In this letter, the problem of resources allocation in decode-and-forward (DF) relayed OFDM
based cognitive system is considered. The dual decomposition technique is adopted to …

This book discusses in-depth the concept of distributed artificial intelligence (DAI) and its
application to cognitive communications In this book, the authors present an overview of …

Cognitive wireless network (CWN) is a novel concept for improving the utilization of scarce
wireless spectrum resources. Dynamic resource allocation is an important task in such …

针对认知无线网络中基于OFDM 技术的资源分配, 将其建模为一个约束优化问题,
进而提出了一种基于免疫克隆的求解方法. 算法采用两阶段资源分配方法, 即先将子载波分配给 …

Daily increasing demand for new wireless services with higher data rate and QoS level
makes the upgrade of the physical layer modulation techniques inevitable. OFDMA is a …

Reconfigurable computing architectures are well suited for the dynamic data flow processing
requirements of software-defined radio. The software radio concept has quickly evolved to …

We consider a cognitive relay network with multi-relay nodes where the cognitive network
transmits over the unused spectrum bands originally allocated to the primary system. This …

Spectrum scarcity seems to be the most challenging issue to be solved in new wireless
telecommunication services. It is shown that spectrum unavailability is mainly due to …

To deal with problems that queuing information is not included in cognitive information when
performing Resource Allocation (RA), a dynamic cross-layer scheme is proposed for the …

The explosion of high-data-rate-demanding wireless applications such as smart-phones and
wireless Internet access devices, together with growth of existing wireless services, are …