%0 Journal Article %J IEEE Transactions on Communications %D 2021 %T Mask-Compliant Orthogonal Precoding for Spectrally Efficient OFDM %A Ravinder Kumar %A Khawar Hussain %A R. López-Valcarce %K rodin %K spectrum shaping %K winter %X
Orthogonal precoding constitutes a powerful technique to reduce spectrum sidelobes of multicarrier signals. This reduction is bought at the cost of introducing precoder redundancy, which results in some throughput loss and additional precoding/decoding complexity. When the goal is to meet some spectral emission mask constraints, it is desirable to avoid unnecessary sidelobe suppression in order to keep precoder redundancy at a minimum. In this context, we introduce a general framework under which we develop a novel Lagrange multiplier-based mask-compliant orthogonal precoder design targeting minimal redundancy. We also adapt to this framework two previously proposed
designs based on spectral notches and minimum out-of-band emission, respectively, to explicitly incorporate mask constraints. Simulation results are provided to show the effectiveness of the proposed designs under different practical masks for multicarrier wireless systems.
%B IEEE Transactions on Communications %V 69 %P 1990-2001 %8 03/2021 %G eng %N 3 %R 10.1109/TCOMM.2020.3041351