Patent ID: 11916586
Assignee: NOKIA SOLUTIONS AND NETWORKS OY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An apparatus, comprising:
at least one processor; and
and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus to perform:
capturing a first signal from a first radio chain;
dividing samples of the first signal into a first set of sub-vectors according to a determined mapping pattern that maps the samples of the first signal to sub-vectors of the first set;
capturing a second signal from a second radio chain, wherein both the first radio chain and the second radio chain are either radio receiver chains or radio transmitter chains;
dividing samples of the second signal into a second set of sub-vectors according to the determined mapping pattern;
estimate a gain difference and phase difference between each sub-vector of the first set and a respective sub-vector of the second set, thus acquiring sub-vector-level gain differences and sub-vector-level phase differences between the first signal and the at least second signal;
combining the sub-vector level gain differences to acquire a gain difference between the first signal and the second signal, and combining the sub-vector-level phase differences to acquire a phase difference between the first signal and the second signal; and
configuring at least one of the first radio chain and the second radio chain to reduce the gain difference and the phase difference;
coupling the first radio chain to the second radio chain to form a single radio chain; and
acquiring the first signal and the second signal while the first radio chain is coupled to the second radio chain.