ITTC Project

Practical Implementation of a FFT-Pruning Algorithm for NC-OFDM Systems

Project Award Date: 08-01-2006


Known in the literature as "FFT pruning", these algorithms reduce the number of multiplications and additions in an FFT block when there exists a substantial number of zero-valued inputs. In the cognitive radio networks community, one scenario where these algorithms could make a significant
contribution is in a non-contiguous orthogonal frequency division multiplexing (NC-OFDM) transceiver, a spectrally agile version of OFDM designed to allow unlicensed users access to licensed spectrum without interfering with the incumbent's rights. As with conventional OFDM, NC-OFDM employs an FFT at its core.


Faculty Investigator(s): Alexander Wyglinski (PI)

Student Investigator(s): Srikanth Pagadarai

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