Signal processing method and apparatus, and communication system
AssigneeHuawei Technologies Co., Ltd.
InventorsYu Tian, Donglin Wang
Life of this patent
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Abstract
A signal processing method and apparatus, and a communication system, and relates to the field of communication technologies. The method includes: a processing unit of a first device first determines a distortion parameter of an eye pattern of a first PAM-N signal transmitted by a transmitting unit in the first device, then performs anti-distortion preprocessing on a second PAM-N signal using an equalizer based on the distortion parameter, to obtain a third PAM-N signal, and controls the transmitting unit to transmit the third PAM-N signal. The distortion parameter is for reflecting a tilt status of the eye pattern, and N≥2. The equalizer is used to perform anti-distortion preprocessing on the second PAM-N signal to obtain the third PAM-N signal.
Claims16
A signal processing method, comprising:
- determining a distortion parameter of an eye pattern of a first pulse amplitude modulation (PAM)-N signal transmitted by a transmitting unit in a first device, wherein the distortion parameter is for reflecting a tilt status of the eye pattern, and N≥2;
- setting coefficients of an equalizer based on the distortion parameter, wherein the equalizer is configured to perform anti-distortion preprocessing on a sampled signal;
- performing, using the equalizer, anti-distortion preprocessing on a second PAM-N signal, to obtain a third PAM-N signal;
- and
- controlling the transmitting unit to transmit the third PAM-N signal;
- wherein N≥2, each bit UI of the eye pattern comprises N−1 eye regions, and the distortion parameter is for reflecting relative positions of the N−1 eye regions;
- the N−1 eye regions comprise a first eye region and N−2 second eye regions, and the first eye region is any eye region of the N−1 eye regions;
- and
- the distortion parameter comprises:
- an included angle between a horizontal coordinate axis or a vertical coordinate axis of the eye pattern and a straight line on which a center of each of the second eye regions and a center of the first eye region are located.
A signal processing method, comprising:
- receiving a first pulse amplitude modulation (PAM)-N signal transmitted by a first device;
- determining a distortion parameter of an eye pattern of the first PAM-N signal;
- and
- sending the distortion parameter to the first device, so that the first device processes a to-be-transmitted signal based on the distortion parameter;
- wherein N>2, each bit UI of the eye pattern comprises N−1 eye regions, and the distortion parameter is for reflecting relative positions of the N−1 eye regions;
- the N−1 eye regions comprise a first eye region and N−2 second eye regions, and the first eye region is any eye region of the N−1 eye regions;
- and
- the distortion parameter comprises:
- an included angle between a horizontal coordinate axis or a vertical coordinate axis of the eye pattern and a straight line on which a center of each of the second eye regions and a center of the first eye region are located.
A communication device, wherein the communication device comprises a transmitting unit and a processing unit, wherein
- the transmitting unit is configured to transmit a first pulse amplitude modulation (PAM)-N signal, and N≥2;
- the processing unit is configured to:
- determine a distortion parameter of an eye pattern of the first PAM-N signal, wherein the distortion parameter is for reflecting a tilt status of the eye pattern;
- set coefficients of an equalizer based on the distortion parameter, wherein the equalizer is configured to perform anti-distortion preprocessing on a sampled signal;
- perform, using the equalizer, anti-distortion preprocessing on a second PAM-N signal, to obtain a third PAM-N signal;
- and
- control the transmitting unit to transmit the third PAM-N signal;
- and
- the transmitting unit is further configured to transmit the third PAM-N signal;
- wherein N≥2, each bit UI of the eye pattern comprises N−1 eye regions, and the distortion parameter is for reflecting relative positions of the N−1 eye regions;
- the N−1 eye regions comprise a first eye region and N−2 second eye regions, and the first eye region is any eye region of the N−1 eye regions;
- and
- the distortion parameter comprises:
- an included angle between a horizontal coordinate axis or a vertical coordinate axis of the eye pattern and a straight line on which a center of each of the second eye regions and a center of the first eye region are located.
Dependencies are inferred from the claim text.