公开(公告)号：GB2428168A

公开(公告)日：2007-01-17

申请号：GB0513752

申请日：2005-07-06

Applicant: MOTOROLA INC

Inventor： SHIRAZI GADI ,  FRIEDLANDER HAIM ,  LUZZATTO ARIEL ,  SERAFY SALOMON

IPC: H04L27/26

Abstract: An RF transmitter (200) including means (201) for generating a multi-carrier modulation signal comprising a plurality of sub-carriers, means (309 fig 3) for modulating an RF carrier signal (c(t)) with the sub-carriers of the multi-carrier modulation signal to produce a modulated signal, a signal splitter (305 fig 3) to split a signal including the sub-carriers of the multi-carrier modulation signal into a plurality of sub-signals each including a sub-set of the plurality of sub-carriers, a plurality of power amplifiers (203) each operable to amplify a separate one of the sub-signals to produce an amplified sub-signal and an RF power combiner (205) operable to combine the amplified sub-signals for transmission as a combined amplified RF signal. The invention may be used for OFDM transmission. It reduces the peak-to-average power ratio (PAPR).