Beacon-Enabled Cognitive Access for Dynamic Spectrum Access

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Said Rutabayiro Ngoga, Yong Yao, Adrian Popescu
Title: Beacon-Enabled Cognitive Access for Dynamic Spectrum Access
Conference name: 8th Euro-NF Conference on Next Generation Internet (NGI)
Year: 2012
Publisher: IEEE
City: Karlskrona
Organization: Blekinge Institute of Technology
Department: School of Computing (Sektionen för datavetenskap och kommunikation)
School of Computing S-371 79 Karlskrona
+46 455 38 50 00
Language: English
Abstract: In dynamic spectrum access networks, the unused licensed spectrum used by primary users (PU) is opened to unlicensed secondary users (SU) for improving spectrum efficiency.
We design a simple time-based threshold policy for collective protection of PUs, enabled by an out-of-band channel. In particular, multiple SUs may be widely distributed in a geographic location. The interference that collocated SUs cause to each other, termed self-interference, becomes a major source that may degrade the SUs communication performance.
We establish an analytical framework for carrier sense multiple access (CSMA) based coexistence mechanisms when integrated into a family of time based threshold policies, and study its performance though theoretical analysis.
Subject: Computer Science\Networks and Communications
Computer Science\General
Keywords: Dynamic Spectrum Access, Cognitive radio, Medium access control