Patent ID: 11929902
Assignee: INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. The device for determining the PCIe signal bandwidth according to claim 12, wherein before, according to the PCIe signal type of the PCIe signal to be transmitted by the to-be-tested transmission link and the insertion loss of the to-be-tested transmission link, determining the target analog transmission link for simulating the to-be-tested transmission link, the method further comprises:
judging whether a tested transmission link of a tested target frequency point with the same insertion loss as the insertion loss of the to-be-tested transmission link exists;
when the tested transmission link of the tested target frequency point with the same insertion loss as the insertion loss of the to-be-tested transmission link exists, after taking the target frequency point of the tested transmission link as the target frequency point of the to-be-tested transmission link, entering the step of taking the target frequency point of the to-be-tested transmission link as the bandwidth of the PCIe signal of the to-be-tested transmission link;
when the tested transmission link of the tested target frequency point with the same insertion loss as the insertion loss of the to-be-tested transmission link does not exist, entering the step of according to the PCIe signal type of the PCIe signal to be transmitted by the to-be-tested transmission link and the insertion loss of the to-be-tested transmission link, determining the target analog transmission link for simulating the to-be-tested transmission link;
after obtaining, by testing, the target frequency point at which the energy spectrum density of the output signal, after being subjected to inverse Fourier transform, of the PCIe signal corresponding to the PCIe signal type passing the target analog transmission link reaches the preset proportion of the original signal of the PCIe signal type, the method further comprises:
storing a corresponding relationship between the insertion loss of the to-be-tested transmission link and the target frequency point of the to-be-tested transmission link.