Computational complexity reduction of NCSP-OFDM receiver for sidelobe suppression
Hikaru Kawasaki, Jun Sasaki, Masaya Ohta, Katsumi Yamashita · IEICE Communications Express · 2016
N-continuous symbol padding orthogonal frequency division multiplexing (NCSP-OFDM) is a modulation technique for sidelobe suppression, which adds the correction symbol only into the guard interval to enable the seamless connection of OFDM symbols.NCSP-OFDM requires the calculation of an inverse matrix per channel estimation, and so its computational complexity is large.This paper proposes a simple method for the calculation of the inverse matrix.Numerical experiments demonstrate that the proposed method does not affect the error rate performance and effectively reduces the computational complexity.