Patent ID: 6813317
Filing Date: 2004-11-02
Classification: H04L

Abstract:
A multicarrier transmitting method, comprising the steps of:inputting n input signals, wherein n is an integer equal to or larger than 2; generating n carriers respectively corresponding to the n input signals; modulating the n carriers into n modulated signals by the n input signals; generating at least one additional signal having a frequency outside a band of the n modulated signals; adjusting a level and a phase of the generated additional signal; outputting a multiplexed signal by adding up the n modulated signals and the adjusted additional signal; and amplifying the multiplexed signal, and then removing the generated additional signal, wherein said level and said phase of the generated additional signal are adjusted such that, after predicting in advance a change of a composite vector of the n modulated signals based on an amplitude and a phase of the n carriers, the composite vector obtained after said up operation can be lower than the composite vector brfore said up when an absolute value of a prediction result exceeds a predetermined level.