6533b834fe1ef96bd129ccec
RESEARCH PRODUCT
Power allocation in multi-channel cognitive radio networks with channel assembling
Meisam RazaviyaynEnbin SongFrank Y. LiZhi-quan LuoLei Jiaosubject
Mathematical optimizationComputer sciencebusiness.industryNetwork packet020206 networking & telecommunications02 engineering and technologyPower budgetPower (physics)Dynamic programmingVariable (computer science)Cognitive radioBounded functionVDP::Technology: 500::Information and communication technology: 550::Telecommunication: 5520202 electrical engineering electronic engineering information engineeringbusinessComputer networkCommunication channeldescription
Accepted version of a paper in the book: 2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC). Published version available from the IEEE:http://dx.doi.org/10.1109/SPAWC.2011.5990485 Consider power allocation for Secondary User (SU) packet transmissions over multiple channels with variable Primary User (PU) arrival rates in cognitive radio networks. Two problems are studied in this paper: The first one is to minimize the collision probability with PUs and the second one is to maximize the data rate while keeping the collision probability bounded. It is shown that the optimal solution for the first problem is to allocate all power onto the best channel based on a certain criterion. The second problem with a per-channel power budget constraint is proven to be NP-hard and therefore a pseudo-polynomial time solution for the problem is proposed. When a total power budget for all channels is imposed in the second problem, a computationally efficient algorithm is introduced. The proposed algorithms are validated by numerical experiments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-06-01 |