Pulse-Shaped Multicarrier Signals with Nonorthogonal Frequency Spacing

Abstract

A new type of pulse-shaped multicarrier signals with nonorthogonal frequency spacing (pulse-shaped spectrally efficient frequency division multiplexing, PS-SEFDM) is proposed. Such signals introduce both out-of-band emission (OOBE) and occupied bandwidth control. The PS-SEFDM generation and reception schemes based on IFFT/FFT and iterative BCJR algorithm (Bahl, Cocke, Jelinek and Raviv) demodulator are proposed. The BER-performance of such signals is of comparable level with SEFDM and OFDM, but OOBE level can be greatly reduced by using optimal pulse-shapes.