Patent ID: 11942987
Assignee: SHAN DONG SITRUS TECHNOLOGY CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A non-transitory computer readable storage medium having computer programs stored thereon, wherein the computer programs, when executed by a processor, implement following steps:
Step S1: controlling a periodic excitation source by a correlation analysis software C to transmit a periodic excitation signal A, wherein the periodic excitation signal comprises repeated sequences of code pattern and satisfies characteristics of randomness and correlation;
Step S2: sampling an output signal A+NA, at an output point of the periodic excitation signal A using a sampling device AA, and averaging the output signal A+NA over one or more periods to filter noise;
Step S3: inputting the sampled output signal A+NA as an input to a device or a channel H to be measured;
Step S4: sampling an output signal B+NB at an output point of the device or the channel H to be measured using a sampling device BB, and averaging the output signal B+NB over one or more periods to filter noise; and
Step S5: transmitting sampling results from the sampling device AA and the sampling device BB to the correlation analysis software C and calculating a transfer function of the device or the channel H to be measured through correlation calculation, wherein the transfer function of the device or the channel H is calculated based on H(t)=B(t)*Dt(i)/kM, H(t) represents a convolution matrix of the transfer function of the device or the channel, B(t) represents the sampled output signal of the device or the channel to be measured, Dt(i) represents an impulse sequence of code pattern in time domain, k is determined by a number of sampled points per baud, and wherein M represents a length of the code pattern of the periodic excitation signal.