Patent ID: 11962384
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The apparatus of claim 6, further comprising:
a first combiner coupled to the vector detector and configured to combine signals from the first transmission channel, the second transmission channel, the third transmission channel, and the fourth transmission channel; and
a coupler,
wherein the vector detector comprises a quadrature receiver coupled to the first combiner through the coupler and configured to:
when the first signal is fed into the first endpoint and the second endpoint:
perform first frequency mixing processing on the first signal and the first feedback signal to obtain the first signal vector;
perform second frequency mixing processing on the first signal and the second feedback signal to obtain the second signal vector;
perform third frequency mixing processing on the first signal and the third feedback signal to obtain the third signal vector; and
perform fourth frequency mixing processing on the first signal and the fourth feedback signal to obtain the fourth signal vector; and

when the second signal is fed into the third endpoint and the fourth endpoint:
perform fifth frequency mixing processing on the second signal and the fifth feedback signal to obtain the fifth signal vector;
perform sixth frequency mixing processing on the second signal and the sixth feedback signal to obtain the sixth signal vector;
perform seventh frequency mixing processing on the second signal and the seventh feedback signal to obtain the seventh signal vector; and
perform eighth frequency mixing processing on the second signal and the eighth feedback signal to obtain the eighth signal vector.