Patent ID: 8085870
Filing Date: 2011-12-27
Classification: H04B

Abstract:
1. A transmitter that suppresses peak power in a transmission signal, comprising: a plurality of peak-suppression-signal generating means that generates peak suppression signals for suppressing peak power in the transmission signal respectively, a peak-suppression-signal synthesizing means that synthesizes peak suppression signals generated by the plurality of peak-suppression-signal generating means, and a subtraction means that subtracts a signal as a synthesis result given by the peak-suppression-signal synthesizing means from the transmission signal, wherein the plural, N pieces of the peak-suppression-signal generating means are provided, and disposed in series, (N−1) pieces of suppression signal subtraction means are provided while being disposed in series, a peak-suppression-signal generating means in a first stage is inputted with the transmission signal and generates a peak suppression signal, a suppression signal subtraction means in a first stage subtracts the peak suppression signal, being generated by the peak-suppression-signal generating means in the first stage, from the transmission signal, a suppression signal subtraction means in an ith (i=2 to N−1) stage subtracts a peak suppression signal, being generated by peak-suppression-signal generating means in an ith stage, from a signal as a subtraction result given by (i−1)th suppression signal subtraction means, and a peak-suppression-signal generating means in a jth (j=2 to N) stage is inputted with a signal as a subtraction result given by suppression signal subtraction means in a (j−1)th stage.