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Non-Uniform Constellations for ATSC 3.0
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- Authors
- Nabil Sven Loghin, Jan Zollner, Belkacem Mouhouche, Daniel Ansorregui, Jinwoo Kim, Sung-Ik Park
- Issue Date
- 2016-03
- Citation
- IEEE Transactions on Broadcasting, v.62, no.1, pp.197-203
- ISSN
- 0018-9316
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- This paper introduces the concept of a non-uniform constellation (NUC) in contrast to conventional uniform quadrature-Amplitude modulation (QAM) constellations. Such constellations provide additional shaping gain, which allows reception at lower signal-To-noise ratios. ATSC3.0 will be the first major broadcasting standard, which completely uses NUCs due to their outstanding properties. We will consider different kinds of NUCs and describe their performance: 2-D NUCs provide more shaping gain at the cost of higher demapping complexity, while 1-D NUCs allow low-complexity demapping at slightly lower shaping gains. These NUCs are well suited for very large constellations sizes, such as 1k and 4k QAM.