Auxiliary channel in PAM/QAM systems using redundant constellation points
AssigneeHuawei Technologies Co., Ltd.
InventorsNebojsa Stojanovic, Liang Zhang, Cristian Prodaniuc, Jinlong Wei, Changsong Xie
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Abstract
An optical communication system that comprises a transmitter adapted to generate a signal by modulating a transmission data as low power consumption symbols of an amplitude modulation format and a monitoring data (MD) as high power consumption symbols of the amplitude modulation format, the MD comprising at least one transmitter parameter and/or at least one receiver parameter of communicating the transmission data. A binary logarithm of a total number of the low power consumption symbols and the high power consumption symbols is a non-integer.
Claims20
An optical communication system, comprising:
- a transmitter adapted to amplitude-modulate a signal using a square amplitude modulation constellation format including transmission data as low power consumption symbols of the square amplitude modulation constellation format and monitoring data (MD) as high power consumption symbols of the square amplitude modulation constellation format, wherein the low power consumption symbols represent a lower transmit power level consumption than a transmit power consumption level represented by the high power consumption symbols, the MD comprising at least one transmitter parameter and/or at least one receiver parameter for communicating the transmission data;
- wherein a binary logarithm of a total number of the low power consumption symbols and the high power consumption symbols is a non-integer,
- wherein the square amplitude modulation constellation format comprises a constellation format with no data symbols defined at or near the corners thereof, and the high power consumption symbols complete the square.
An optical communication system, comprising:
- a receiver adapted to demodulate transmission data from low power consumption symbols of a signal amplitude-modulated in a square amplitude modulation constellation format and demodulate monitoring data (MD) from high power consumption symbols of the square amplitude modulation constellation format, wherein the low power consumption symbols represent a lower transmit power level consumption than a transmit power consumption level represented by the high power consumption symbols, the MD comprising at least one transmitter parameter and/or at least one receiver parameter for communicating the transmission data;
- wherein a binary logarithm of a total number of the low power consumption symbols and high power consumption symbols is a non-integer,
- wherein the square amplitude modulation constellation format comprises a constellation format with no data symbols defined at or near the corners thereof, and the high power consumption symbols complete the square.
A method for optical communication demodulation, comprising:
- receiving a signal amplitude-modulated in a square amplitude modulation constellation format including low power consumption symbols and high power consumption symbols, wherein the low power consumption symbols represent a lower transmit power level consumption than a transmit power consumption level represented by the high power consumption symbols;
- demodulating transmission data from the low power consumption symbols of the square amplitude modulation constellation format;
- and
- demodulating monitoring data (MD) from the high power consumption symbols of the square amplitude modulation constellation format, the MD comprising at least one transmitter parameter and/or at least one receiver parameter for communicating transmission data;
- wherein a binary logarithm of a total number of the low power consumption symbols and the high power consumption symbols is a non-integer,
- wherein the square amplitude modulation constellation format comprises a constellation format with no data symbols defined at or near the corners thereof, and the high power consumption symbols complete the square.
Dependencies are inferred from the claim text.