Patent ID: 11962344
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An apparatus for obtaining a transmitter test parameter, the apparatus comprising:
a processor, and
a memory coupled to the processor, having processor-executable instructions stored thereon, which are executed by the processor and cause the processor to:
perform waveform sampling on an optical signal sent by a transmitter, to obtain a sampled electrical signal,
obtain a first noise amount associated with the sampled electrical signal based on a preset initial noise ratio parameter and a level amplitude of the sampled electrical signal,
wherein the level amplitude of the sampled electrical signal is greater than a minimum level and less than a maximum level,
wherein the initial noise ratio parameter is a ratio of a maximum noise amount to a minimum noise amount,
wherein the maximum noise amount is a noise amount associated with an electrical signal at the maximum level,
wherein the minimum noise amount is a noise amount associated with an electrical signal at the minimum level, and
wherein the first noise amount is a noise amount that is greater than the minimum noise amount and less than the maximum noise amount; and

obtain a second noise amount associated with an ideal electrical signal based on the initial noise ratio parameter, a first level amplitude of the ideal electrical signal and a second level amplitude of the ideal electrical signal,
wherein an optical modulation amplitude of the ideal electrical signal equals to the optical modulation amplitude of the sampled electrical signal,
wherein the first level amplitude of the ideal electrical signal is the maximum level, the second level amplitude of the ideal electrical signal is the minimum level, and

wherein the first noise amount and the second noise amount are used to perform a consistency test on the transmitter.