Methods and apparatus for orthogonal sequence transmission with frequency hopping

An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:

• a memory;
• a transceiver;
• and
• at least one processor coupled to the memory and the transceiver and configured to:
• determine a first orthogonal matrix and a second orthogonal matrix;
• determine a first codebook based on the first orthogonal matrix and a second codebook based on the second orthogonal matrix, the first codebook including a plurality of codepoints, the second codebook including a plurality of codepoints;
• and
• transmit, via the transceiver, at least one first signal and at least one second signal to convey a K bit payload in an uplink resource, the at least one first signal including a first codepoint of the plurality of codepoints in the first codebook, the at least one second signal including a second codepoint of the plurality of codepoints in the second codebook, where K is an integer.

A method of wireless communication at a base station, comprising:

• receiving at least one first signal and at least one second signal to convey a K bit payload in an uplink resource, the at least one first signal associated with a first codebook including a plurality of codepoints, the at least one second signal associated with a second codebook including a plurality of codepoints, where K is an integer;
• correlating the at least one first signal with each of the plurality of codepoints in the first codebook and the at least one second signal with each of the plurality of codepoints in the second codebook;
• combining, based on the correlation, a first correlation output of the at least one first signal and a second correlation output of the at least one second signal, the first correlation output corresponding to a correlation with the at least one first signal and the second correlation output corresponding to a correlation with the at least one second signal;
• and
• determining at least one codepoint based on a highest combined correlation of the at least one first signal and the at least one second signal.

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 first signal and at least one second signal to convey a K bit payload in an uplink resource, the at least one first signal associated with a first codebook including a plurality of codepoints, the at least one second signal associated with a second codebook including a plurality of codepoints, where K is an integer;
• correlate the at least one first signal with each of the plurality of codepoints in the first codebook and the at least one second signal with each of the plurality of codepoints in the second codebook;
• combine, based on the correlation, a first correlation output of the at least one first signal and a second correlation output of the at least one second signal, the first correlation output corresponding to a correlation with the at least one first signal and the second correlation output corresponding to a correlation with the at least one second signal;
• and
• determine at least one codepoint based on a highest combined correlation of the at least one first signal and the at least one second signal.