Patent ID: 11923975
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 8:
9. A computation method for compressing channel state information (CSI), the CSI representing a channel transfer function H having a spatial dimension (n) and a frequency dimension (f), the computation method comprising:
performing, by a processor, a spatial transformation and a frequency-to-time transformation on the channel transfer function H to obtain a transformed channel transfer function HT; and
compressing, by the processor, the transformed channel transfer function HT to generate compressed channel state information (CCSI), wherein the compressing comprises:
selecting, by the processor, from the transformed channel transfer function HT, a predetermined number L of values hτ,k of the transformed channel transfer function HT having the greatest amplitudes or all the values hτ,k of the transformed channel transfer function HT exceeding a predetermined amplitude, wherein k represents spatial components and τ represents time taps, and
generating, by the processor, a channel state report from the selected values of the transformed channel transfer function HT.