Reduction of peak to average power ratio and of equaliser complexity in multicarrier transmission systems

摘要

This application provides a method for the transmission and reception of multicarrier signals, with a view to improving the peak to average power ratio and to the complexity of equaliser structure.;The method includes the following steps:(a): encoding of the baseband signal;(b): formation of a block of N encoded symbols;(c): division of the N encoded symbols into L subblocks of M symbols each, where N=LM;(d): calculating the M-point inverse fast Fourier transform of each of the L subblocks;(e): combination of the calculated M-point inverse Fourier transforms to produce an N-point signal, which corresponds to the N-point inverse Fourier transform of the block N encoded symbols;(f): attachment of a cyclic prefix to the output of step (e);(g): transforming the output of step (f) to analogue signals;(h): transmission of the output of step (g).