Performance evaluation of a signal processing scheme for multicarrier transmission with quasi-constant envelope

When a very power-efficient, strongly nonlinear amplification is intended with multicarrier transmission, one can adopt a paired-burst design approach as recently proposed by the authors as an alternative to conventional OFDM (see Dinis, R. and Gusmao, A., IEEE VTC´97, 1997). We consider and evaluate, by analytical means, a way of adopting this approach within a signal processing scheme which combines nonlinear operations in the time domain and linear operations in the frequency domain, so as to achieve a quasi-constant envelope while approximating the maximum spectral efficiency allowed by that approach (one half the spectral efficiency of the corresponding conventional multicarrier scheme). We use these signal processing schemes to generate CEPB-OFDM signals (constant-envelope paired-burst OFDM)