Sensing Aware Design Approaches for Airborne Networks
Abstract
Under-utilization of existing spectrum usage by licensed users is a well-known fundamental problem in current networks. A novel concept towards it's amelioration is that of cognitive radio networks that allow usage of such un- or under- used spectrum by unlicensed or secondary users, provided they do not interfere with the incumbent or primary users. Clearly, an enabler of such opportunistic use is fast and accurate determination of primary user (PUs) channel status (whether occupied or idle) by secondary networks, as well as accurate modeling of patterns of spectrum occupancy by PUs that are dynamic in both time and frequency. In our work, we explore various options - algorithmic and architectural - towards optimizing the (mean) time to detect channel status subject to accuracy constraints. Finally, we also explored information theoretic results for a new cognitive interference channel that allows for multiple co-located secondary networks.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 28, 2012
- Accession Number
- ADA581377
Entities
People
- Sumit Roy
Organizations
- University of Washington