Beacon-Enabled Cognitive Access for Dynamic Spectrum Access
|Document type:||Conference Papers|
|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)|
|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
|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
|Keywords:||Dynamic Spectrum Access, Cognitive radio, Medium access control|