Apparatus and method for reducing the crest factor of single carrier or multi-carrier signals

摘要

An apparatus for reducing the crest factor of a multi-carrier transmission system. The apparatus comprises a plurality of single carrier crest factor reduction circuits. Each of the single carrier crest factor reduction circuits receives a selected one of a plurality of single carrier signals and generates a crest factor reduced (CFR) single carrier signal. The apparatus also comprises an up-converter for up-converting each of the CFR single carrier signals to a selected frequency and combining the up-converted CFR single carrier signals to thereby produce a multi-carrier signal. The apparatus further comprises a first multi-carrier crest factor reduction circuit for receiving the multi-carrier signal and generating a first crest factor reduced (CFR) multi-carrier signal.