发明名称 |
CODING AND MODULATION APPARATUS USING NON-UNIFORM CONSTELLATION |
摘要 |
A coding and modulation apparatus and method are presented. The apparatus (10) comprises an encoder (11) that encodes input data into cell words, and a modulator (12) that modulates said cell words into constellation values of a non-uniform constellation. The modulator (12) is configured to use, based on the total number M of constellation points of the constellation and the signal-to-noise ratio SNR in dB, a non-uniform constellation from a group of constellations comprising one or more constellations defined by a constellation position vector comprising a predetermined number of constellation positions, wherein in one or more constellation position vectors two or more constellation positions are identical resulting from a condensation of preliminary constellation positions optimized before. |
申请公布号 |
US2016080192(A1) |
申请公布日期 |
2016.03.17 |
申请号 |
US201414786371 |
申请日期 |
2014.04.29 |
申请人 |
SONY CORPORATION |
发明人 |
STADELMEIER Lothar;LOGHIN Nabil Sven;ZOELLNER Jan |
分类号 |
H04L27/34;H04L1/00 |
主分类号 |
H04L27/34 |
代理机构 |
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代理人 |
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主权项 |
1. A coding and modulation apparatus comprising
an encoder (11) that encodes input data into cell words, and a modulator (12) that modulates said cell words into constellation values of a non-uniform constellation,wherein said modulator (12) is configured to use, based on the total number M of constellation points of the constellation and the signal-to-noise ratio SNR in dB, a non-uniform constellation from a group of constellations comprising one or more constellations defined by a constellation position vector comprising a predetermined number of constellation positions,wherein in one or more constellation position vectors two or more constellation positions are identical resulting from a condensation of preliminary constellation positions optimized before. |
地址 |
Tokyo JP |