Referenced Items are not available for this document.
In this letter, the problem of joint spectrum sensing and data transmission in a cognitive relay network is studied. An optimal power allocation (OPA) strategy is proposed to maximize the secondary throughput under both sensing performance and total power constraints. The OPA problem is transformed into seeking an optimal cognitive relay amplifying gain. Analytical and simulation results show that there indeed exists an optimal amplifying gain to achieve maximum secondary throughput under certain conditions. Furthermore, compared with equal power allocation (EPA), the throughput gain by OPA increases with the total power budget.
Published in:
Wireless Communications Letters, IEEE
(Volume:1
,
Issue:
1
)
Date of Publication: February 2012
- Page(s):
- 26 - 29
- ISSN :
- 2162-2337
- INSPEC Accession Number:
- 12527298
- Digital Object Identifier :
- 10.1109/WCL.2012.120211.110056
- Product Type:
- Journals & Magazines
- Date of Publication :
- 07 December 2011
- Date of Current Version :
- 13 February 2012
- Issue Date :
- February 2012
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