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CORR
2008
Springer

A Spectrum-Shaping Perspective on Cognitive Radio

13 years 3 months ago
A Spectrum-Shaping Perspective on Cognitive Radio
A new perspective on cognitive radio is presented for the case where the primary transmission is in uncoded analog form. The basic idea is to exploit signal-to-noise ratio margins in primary receivers, and to optimize cognitive signals by appropriately shaping their spectrum. It is shown that coexistence of primary and cognitive users is possible even without message-sharing, and furthermore, the cognitive user is no longer interference-limited, but can always transmit at its full available power thus achieving logarithmic growth of its information rate as its average power constraint grows large.
Wenyi Zhang, Urbashi Mitra
Added 09 Dec 2010
Updated 09 Dec 2010
Type Journal
Year 2008
Where CORR
Authors Wenyi Zhang, Urbashi Mitra
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