Abstract
We propose sensing protocols for a cognitive dualhop relay system where transmission from source (S) to destination (D) is accomplished over two phases with the assistance of a relay (R). A naive sensing protocol is to perform sensing at S and R before the respective transmission phase. This leads to substantial loss in spectral efficiency. We propose a sensing protocol where sensing is only performed at S when R is transmitting to D after canceling out the self-interference component that is known a priori. Theoretical analysis and numerical simulation validate that our proposed scheme achieves higher spectral efficiency than the naive sensing scheme while maintaining detection performance.
Original language | English |
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Title of host publication | 2009 First International Communication Systems and Networks and Workshops |
Publisher | Institute of Electrical and Electronics Engineers |
Number of pages | 6 |
ISBN (Print) | 9781424429127 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
Event | 1st International Conference on Communication Systems and Networks and Workshops, COMSNETS 2009 - Bangalore, India Duration: 5 Jan 2009 → 10 Jan 2009 |
Conference
Conference | 1st International Conference on Communication Systems and Networks and Workshops, COMSNETS 2009 |
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Country/Territory | India |
City | Bangalore |
Period | 5/01/09 → 10/01/09 |