Cognitive Coexistence between Infrastructure and Ad-hoc Systems
| dc.creator | Geirhofer, Stefan | |
| dc.creator | Tong, Lang | |
| dc.creator | Sadler, Brian M. | |
| dc.date | 2008-12-07 | |
| dc.date.accessioned | 2026-07-07T12:10:10Z | |
| dc.date.available | 2026-07-07T12:10:10Z | |
| dc.description | 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 closed-form 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 utilizing the superior flexibility of the infrastructure links can effectively mitigate interference. | |
| dc.description | Submitted to IEEE Transactions on Wireless Communications | |
| dc.identifier | https://arxiv.org/abs/0812.1405 | |
| dc.identifier | http://arxiv.org/abs/0812.1405 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/209860 | |
| dc.subject | Information Theory | |
| dc.title | Cognitive Coexistence between Infrastructure and Ad-hoc Systems | |
| dc.type | text |