High order non-uniform constellations for broadcasting UHDTV

Bit-Interleaved Coded Modulation (BICM) for ATSC 3.0

“…Both uniform and non-uniform QAM constellations were proposed, although it became clear during the examination that some NUCs were clearly superior in performance [18], [19]. In order to limit the complexity at the receiver side, two-dimensional non-uniform constellations (2D-NUCs) were adopted for 16-, 64-and 256-point constellations, and one-dimensional non-uniform constellations (1D-NUCs) for 1024-and 4096-point constellations.…”

Low-Complexity Demapping Algorithm for Two-Dimensional Non-Uniform Constellations

“…In [14], high-order 1D-and 2D-NUCs are optimized with respect to their BICM capacity, also for AWGN channel. In [15], high-order NUCs with constellation sizes of up to 4k-QAM are investigated for Ultra-High Definition TV (UHDTV) broadcasting services.…”

Optimization and Performance of Non-Uniform Rotated Constellations With Multi-RF Transmission Techniques

“…In [12], high-order 1D-and 2D-NUCs are optimized with respect to their BICM capacity, also for AWGN channel. In [13], high-order NUCs with constellation sizes of up to 4k-QAM are investigated. A sub-optimal demapper that reduces the total number of distances to be computed when using 2D-NUCs has also been proposed in [14].…”