Patent ID: 8457227

Claim:
A multi-carrier receiver with dynamic power adjustment, comprising: a demodulator receiving a multi-carrier signal to generate a demodulated multi-carrier signal, wherein the multi-carrier signal comprises a plurality of sub-carriers; a channel estimator estimating channel characteristics of each sub-carrier from the demodulated multi-carrier signal; an inter-carrier interference (ICI) detector estimating an ICI strength of ICI from the demodulated multi-carrier signal; a system performance detector detecting a system performance; an ICI canceller subtracting the estimated ICI strength included in the received multi-carrier signal from the demodulated multi-carrier signal; a determination circuit turning on the ICI canceller when the ICI strength exceeds an ICI threshold and the system performance is less than a system performance threshold; an equalizer equalizing the demodulated multi-carrier signal based on the estimated channel characteristics to generate a equalized multi-carrier signal; and a multiprotocol encapsulation forward error correction (MPE-FEC) module, wherein the equalized multi-carrier signal comprises a plurality of bursts, each burst is marked as either “reliable” or “unreliable”, if all the plurality of bursts are marked “reliable”, the MPE-FEC module remains off to save power, otherwise, the MPE-FEC module is turned on.