Patent ID: 11949628
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The electronic device of claim 1, wherein:
the first subcarrier structure comprises:
a direct current (DC) subcarrier;
a first set of four data subcarriers;
a first set of four pilot subcarriers with one of the four data subcarriers between each of the four pilot subcarriers and the DC subcarrier; and
a first quadrature amplitude modulation (QAM) scheme; and

the second subcarrier structure comprises:
the DC subcarrier;
a second set of eight data subcarriers;
a second set of four pilot subcarriers with two of the eight data subcarriers between each of the four pilot subcarriers and the DC subcarrier; and
a second QAM scheme;
an amount of motion in the second state of motion is greater than an amount of motion in the first state; and
an amount of motion in the third state of motion is greater than the amount of motion in the second state.