Patent ID: 8559829
Filing Date: 2013-10-15
Classification: H04B,H04L

Abstract:
1. An apparatus for receiving an optical orthogonal frequency-division multiplexed signal containing a plurality of traffics wherein the traffics are separated from adjacent traffics by a guard band, said apparatus comprising: a coherent optical detector configured to convert the optical orthogonal frequency-division multiplexed signal into an electrical orthogonal frequency-division multiplexed signal; a plurality of parallel preprocessors, each configured to preprocess a portion of the electrical orthogonal frequency-division multiplexed signal containing one of the plurality of traffics; a signal combiner configured to combine the preprocessed portions of the electrical orthogonal frequency-division multiplexed signals; a processor configured to process the combined preprocessed portions of the electrical orthogonal frequency-division multiplexed signal; and an equalization and carrier phase recovery module configured to compensate for a relative phase shift between the preprocessed, combined and processed portions of the electrical orthogonal frequency-division multiplexed signals.