Channel calibration method and network device

A network device, comprising:

• a memory;
• and
• a processing circuit, configured to:
• obtain at least two channel sets including a first channel set and a second channel set by grouping a plurality of to-be-calibrated channels, each of the at least two channel sets comprises a reference channel and at least one to-be-calibrated channel, and the first channel set and the second channel set have an intersection set including a common channel;
• for each of the at least two channel sets, determine a compensation value of each to-be-calibrated channel in the respective channel set based on a calibration signal transmitted between the reference channel in the respective channel set and the respective to-be-calibrated channel, wherein the compensation value of the respective to-be-calibrated channel is used to compensate a frequency response of the respective to-be-calibrated channel;
• determine, based on a compensation value of the common channel in the first channel set and a compensation value of the common channel in the second channel set, an inter-set compensation value between the first channel set and the second channel set, wherein the inter-set compensation value is used to compensate frequency responses of all channels in the first channel set or the second channel set;
• and
• calibrate the plurality of to-be-calibrated channels based on the inter-set compensation value and the compensation values of the plurality of to-be-calibrated channels.

A non-transitory computer readable storage medium storing a computer program, that when executed by a computer, enable the computer to perform functions comprising:

• obtaining at least two channel sets including a first channel set and a second channel set by grouping a plurality of to-be-calibrated channels, each of the at least two channel sets comprising a reference channel and at least one to-be-calibrated channel, and the first channel set and the second channel set have an intersection set including a common channel;
• for each of the at least two channel sets, determining a compensation value of each to-be-calibrated channel in the respective channel set based on a calibration signal transmitted between the reference channel in the respective channel set and the respective to-be-calibrated channel, wherein the compensation value of the respective to-be-calibrated channel is used to compensate a frequency response of the respective to-be-calibrated channel;
• determining, based on a compensation value of the common channel in the first channel set and a compensation value of the common channel in the second channel set, an inter-set compensation value between the first channel set and the second channel set, wherein the inter-set compensation value is used to compensate frequency responses of all channels in the first channel set or the second channel set;
• and
• calibrating the plurality of to-be-calibrated channels based on the inter-set compensation value and the compensation values of the plurality of to-be-calibrated channels.