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

Claim 0:
1. A transmission method comprising:
encoding first information according to a first coding rate and a first code length to generate a first encoded data sequence;
encoding second information according to the first coding rate and a second code length to generate a second encoded data sequence, the second code length being different from the first code length;
mapping the first encoded data sequence onto 16 signal points defined by a first 16 Quadrature Amplitude Modulation (QAM) scheme to generate a first modulation symbol sequence;
mapping the second encoded data sequence onto 16 signal points defined by a second 16 QAM scheme to generate a second modulation symbol sequence;
generating a first Orthogonal Frequency Division Multiplexing (OFDM) symbol based on the first modulation symbol sequence;
generating a second OFDM symbol based on the second modulation symbol sequence;
transmitting a signal generated based on the first OFDM symbol and the second OFDM symbol, wherein
the 16 signal points are representable on an FQ 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 16 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.