@conference {751, title = {Low-Power Active Interference Cancellation for OFDM Spectrum Sculpting}, booktitle = {European Signal Processing Conference (EUSIPCO)}, year = {2014}, month = {09/2014}, abstract = {
We present a low-power design for Active Interference
Cancellation (AIC) sculpting of the OFDM spectrum, based
on sparse design concepts. Optimal AIC designs compute
cancellation weights based on contributions from all data subcarriers.
Thus, as the number of subcarriers grows, power
consumption becomes a concern, and suboptimal solutions
that avoid involving all subcarriers are of interest. In this context,
we present novel sparse AIC designs based on a zeronorm
minimization of the matrix defining the cancellation
weights. These designs drastically reduce the number of operations
per symbol, and thus the power consumption, while allowing
to tune the loss with respect the optimal design. They
can be efficiently obtained and significantly outperform usual
thresholding or sparsity-inducing l_1-norm minimization approaches.
}, url = {http://www.eurasip.org/Proceedings/Eusipco/Eusipco2014/HTML/papers/1569912103.pdf}, author = {Schmidt, J.F. and Daniel Romero and R. L{\'o}pez-Valcarce} }