Frame structure with a plurality of modulation formats

摘要

The present invention refers to a multi-modulation frame including at least a first time interval (1) and a second time interval (2), following the first time interval (1). Said first and second time intervals (1 and 2) are defined by a first modulation and by a second modulation respectively. The frame is characterised in that a last constellation symbol from the first time interval with the first modulation coincides in phase and amplitud with a symbol from the second modulation. <IMAGE>