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 http://www.bth.se/com |
| 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 |
