Vandermonde frequency division multiplexing for cognitive radio

Leonardo S. Cardoso, Mari Kobayashi, Ryan Øyvind, Mérouane Debbah

Research output: Contribution to conferencePaperpeer-review

34 Scopus citations

Abstract

We consider a cognitive radio scenario where a primary and a secondary user wish to communicate with their corresponding receivers simultaneously over frequency selective channels. Under realistic assumptions that the primary user is ignorant of the secondary user's presence and that the secondary transmitter has no side information about the primary's message, we propose a Vandermonde precoder that cancels the interference from the secondary user by exploiting the redundancy of the cyclic prefix and the frequency selectivity of the channel. Our numerical examples show that VFDM, with an appropriate design of the input covariance, enables the secondary user to achieve a non-negligible rate while generating zero interference to the primary user.

Original languageEnglish
Pages421-425
Number of pages5
DOIs
StatePublished - 2008
Externally publishedYes
Event2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2008 - Recife, Brazil
Duration: 6 Jul 20089 Jul 2008

Conference

Conference2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2008
Country/TerritoryBrazil
CityRecife
Period6/07/089/07/08

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