Patent ID: 11909484
Assignee: NOKIA TECHNOLOGIES OY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A first device comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the first device to perform at least:
determining a 2L×M matrix Ŵ2 comprising linear combination coefficients for a pre-coder matrix indicator (PMI) matrix, wherein matrix Ŵ2 has 2L spatial components and M frequency components;
determining a shifted matrix by shifting the frequency components of matrix Ŵ2 circularly, such that a maximum coefficient of matrix Ŵ2 is located in a frequency component with a predetermined index;
generating a strongest coefficient indicator with ┌log2 2L┐ bits, indicating the index of the spatial component associated with the maximum coefficient of matrix Ŵ2; and
transmitting, to a second device, uplink control information comprising the strongest coefficient indicator and non-zero linear combination coefficients, wherein the non-zero linear combination coefficients are scaled by the maximum coefficient, wherein the transmitted non-zero linear combination coefficients exclude the maximum coefficient.