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US 11,082,158 B2Granted
Transmitting method and receiving method using non-uniform constellation
AssigneeSamsung Electronics Co., Ltd.
InventorsBelkacem Mouhouche, Daniel Ansorregui Lobete, Hong-sil Jeong
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Abstract
A receiving method is disclosed. The receiving method includes receiving a signal from a transmitting apparatus; demodulating the signal to generate values based on 64-quadrature amplitude modulation (QAM); deinterleaving the values; and decoding the deinterleaved values based on a low density parity check (LDPC) code, a code rate of the LDPC code being 5/15, wherein the signal is demodulated based on at least one constellation point among given constellation points.
Claims4
A receiving method of a receiving apparatus comprising:
- receiving a signal from a transmitting apparatus;
- demodulating the signal to generate values;
- deinterleaving the values;
- and
- decoding the deinterleaved values based on a low density parity check (LDPC) code, a code rate of the LDPC code being 5/15,
- wherein the signal is demodulated based on constellation points for 64-quadrature amplitude modulation (QAM), and
- wherein the constellation points comprise constellation points represented in a list below:
- 1.4327 + 0.3305i
- 1.0909 + 0.2971i
- 1.2484 + 0.7803i
- 0.9762 + 0.5715i
- 0.3309 + 1.4326i
- 0.2979 + 1.0923i
- 0.7829 + 1.2477i
- 0.5739 + 0.9763i
- 0.3901 + 0.2112i
- 0.5317 + 0.2475i
- 0.3945 + 0.2289i
- 0.5236 + 0.2894i
- 0.2108 + 0.3911i
- 0.2475 + 0.5327i
- 0.2287 + 0.3955i
- 0.2898 + 0.5246i.
20 more elements
A transmitting method comprising:
- interleaving a codeword, wherein the codeword is generated by encoding input bits based on a low density parity check (LDPC) code, a code rate of the LDPC code being 5/15;
- demultiplexing bits of the interleaved codeword to generate cells;
- mapping the cells to at least one constellation point among constellation points for 64-quadrature amplitude modulation (QAM);
- and
- transmitting a signal which is generated based on the constellation points,
- wherein the constellation points comprise constellation points as represented in a list below:
- 1.4327 + 0.3305i
- 1.0909 + 0.2971i
- 1.2484 + 0.7803i
- 0.9762 + 0.5715i
- 0.3309 + 1.4326i
- 0.2979 + 1.0923i
- 0.7829 + 1.2477i
- 0.5739 + 0.9763i
- 0.3901 + 0.2112i
- 0.5317 + 0.2475i
- 0.3945 + 0.2289i
- 0.5236 + 0.2894i
- 0.2108 + 0.3911i
- 0.2475 + 0.5327i
- 0.2287 + 0.3955i
- 0.2898 + 0.5246i.
19 more elements
Dependencies are inferred from the claim text.