@article {1066, title = {Sidelobe Suppression for Multicarrier Signals via Structured Spectral Precoding}, journal = {IEEE Transactions on Communications}, volume = {72}, year = {2024}, month = {06/2024}, pages = {3155-3168}, abstract = {
Reducing the large sidelobes of multicarrier signals
is crucial to prevent adjacent channel interference. Spectral
precoding is an effective approach toward this goal, at the
expense of throughput loss due to precoder redundancy; thus,
it is of interest to explore alternative precoder designs with
improved performance at lower redundancies. We present a
novel precoder which minimizes radiated power within a userselectable
frequency region. The structure of the precoding
matrix is chosen to allow efficient mitigation of in-band distortion
at the receiver by means of iterative and successive interference
cancellation, while completely avoiding distortion to protected
and pilot subcarriers. By exploiting the low-rank properties of
constituent blocks, computational complexity can be significantly
reduced with little impact on sidelobe reduction. Simulation
results show the benefits of the proposed design, which is
particularly effective in redundancy-limited settings targeting
high spectral efficiency.
}, keywords = {mayte, multicarrier communications, OFDM, spectrum shaping}, doi = {10.1109/TCOMM.2024.3357429}, author = {Khawar Hussain and R. L{\'o}pez-Valcarce and Francesc Rey and Josep Sala and Javier Villares} }