Cognitive Radio and Multi-Dimension Cooperative Communications

摘要

The perspective on Cognitive Radio (CR) technology has turned to a "network and system" framework.To enhance a system's cognitive capability and reduce cognitive costs,cooperative means must be adopted.As physical layer link technologies suffer from a bottleneck in performance improvement,multi-dimension cooperation among different network elements will certainly be a main approach to enabling mobile communication systems.Awareness of context and users' service characteristics is the critical base for intelligent cooperation and joint resource management.Therefore,the combination of CR with multi-dimension cooperative communications has become an inevitable trend.