Patent ID: 11936470
Assignee: SUN PATENT TRUST
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A reception method comprising:
receiving a signal including a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol;
extracting a first modulation symbol sequence from the first OFDM symbol, and a second modulation symbol sequence from the second OFDM symbol;
demodulating the first modulation symbol sequence mapped on 16 signal points defined by a first 16 Quadrature Amplitude Modulation (QAM) scheme to generate a first encoded data sequence;
demodulating the second modulation symbol sequence mapped on 16 signal points defined by a second 16 QAM scheme to generate a second encoded data sequence;
decoding the first encoded data sequence according to a first coding rate and a first code length to generate first information; and
decoding the second encoded data sequence according to the first coding rate and a second code length to generate second information, the second code length being different from the first code length, wherein
the 16 signal points are representable on an I/Q plane having a real axis and an imaginary axis such that in a first quadrant, a first distance between first signal points is different from a second distance between second signal points, the first signal points being adjacent to each other, the second signal points being adjacent to each other,
the 16 signal points defined by the first QAM scheme have a first arrangement pattern on the I/Q plane, and
the 16 signal points defined by the second 16 QAM scheme have a second arrangement pattern on the I/Q plane different from the first arrangement pattern.