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An energy-efficient cooperative spectrum sensing scheme with amplify-and-forward relaying is proposed in this letter. The goal is to minimize the total energy consumption while satisfying the sensing performance constraint. Toward this goal, a constrained optimization problem is formulated in terms of three sensing parameters (number of relays, relay amplifying gains, and number of samples). An approximate closed-form solution to the optimization problem is derived and is validated by simulations.
Published in:
Communications Letters, IEEE
(Volume:16
,
Issue:
4
)
Date of Publication: April 2012
- Page(s):
- 450 - 453
- ISSN :
- 1089-7798
- INSPEC Accession Number:
- 12656159
- Digital Object Identifier :
- 10.1109/LCOMM.2012.021612.112143
- Product Type:
- Journals & Magazines
- Date of Publication :
- 20 February 2012
- Date of Current Version :
- 12 April 2012
- Issue Date :
- April 2012
- Sponsored by :
- IEEE Communications Society
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