Transmitter compensation in decoding of intensity modulated optical ofdm with direct detection
AssigneeNEC Laboratories America, Inc.
InventorsJunqiang Hu, Dung-Huy Han, Ting Wang
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Abstract
A method by an optical OFDM receiver includes converting a received optical signal to an electrical signal, deriving a digital signal from the electrical signal, and emulating, with an iterative OFDM demodulator responsive to the digital signal, a transmitter effect in the received signal of lower peak clipping and top peak distortion and applying the transmitter effect to the received signal and a decision-made signal for estimating an error function to be applied to a demodulation of the received optical signal.
Claims7
A method by an optical OFDM receiver comprising:
- converting a received optical signal to an electrical signal,
- obtaining a digital signal from the electrical signal, and
- deriving, with an iterative OFDM demodulator responsive to the digital signal, a transmitter effect in the received signal of lower peak clipping and top peak distortion and applying the transmitter effect to the received signal and a decision-made signal for estimating an error function to be applied to a demodulation of the received optical signal.
An optical OFDM receiver comprising:
- a direct optical detector for converting a received optical signal to an electrical signal,
- a converter for converting a digital signal from the electrical signal, and
- an iterative OFDM demodulator responsive to the digital signal for deriving a transmitter effect in the received signal of lower peak clipping and top peak distortion and applying the transmitter effect to the received signal and a decision-made signal for estimating an error function to be applied to a demodulation of the received optical signal.
Dependencies are inferred from the claim text.