Improvement of SER of spectrum sculpting precoder with SLM for sidelobe suppression of OFDM signal

Abstract

There is a problem with OFDM (orthogonal frequency division multiplexing) in that high sidelobes arise from the discontinuity of adjacent OFDM symbols. Although the spectrum sculpting precoder (SSP) produces smaller sidelobes than plain OFDM, a correction symbol inserted to suppress sidelobes causes degradation in the SER performance. This paper therefore proposes applying SLM (selected mapping) to SSP for reducing the power of the correction symbols. Our method allows improving the SER performance.