Patent ID: 11876654
Assignee: QUALCOMM INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 29:
30. An apparatus for wireless communication, the apparatus being a base station, comprising:
a memory;
a transceiver; and
at least one processor coupled to the memory and the transceiver and configured to:
receive, via the transceiver, at least one signal to convey a K bit payload in an uplink resource, the at least one signal associated with a codebook including a plurality of codepoints, where K is a positive integer;
correlate the at least one signal with each of the plurality of codepoints in the codebook, the codebook being associated with a sub-matrix of a discrete Fourier transform (DFT) matrix, the DFT matrix including a plurality of rows and a plurality of columns, the sub-matrix including one or more even-numbered rows in the DFT matrix or one or more even-numbered columns in the DFT matrix; and
determine a first codepoint of the plurality of codepoints in the codebook, the first codepoint including a highest correlation with the at least one signal.