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WICOMM
2010

A sensing-based cognitive coexistence method for interfering infrastructure and ad hoc systems

13 years 8 months ago
A sensing-based cognitive coexistence method for interfering infrastructure and ad hoc systems
The rapid proliferation of wireless systems makes interference management more and more important. This paper presents a novel cognitive coexistence framework, which enables an infrastructure system to reduce interference to ad-hoc or peer-to-peer communication links in close proximity. Motivated by the superior resources of the infrastructure system, we study how its centralized resource allocation can accommodate the ad-hoc links based on sensing and predicting their interference patterns. Based on an ON/OFF continuous-time Markov chain model, the optimal allocation of power and transmission time is formulated as a convex optimization problem and structured solutions are derived. The optimal scheduling is extended to the case where the infrastructure channel is random and rate constraints need only be met in the long-term average. Finally, the multi-terminal case is addressed and the problem of optimal sub-channel allocation discussed. Numerical performance analysis illustrates that...
Stefan Geirhofer, Lang Tong, Brian M. Sadler
Added 31 Jan 2011
Updated 31 Jan 2011
Type Journal
Year 2010
Where WICOMM
Authors Stefan Geirhofer, Lang Tong, Brian M. Sadler
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