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Table 3 Optimized transmission parameters for a 6-MHz bandwidth (4 K UHD layer: 256 QAM modulation, HD layer: 16 QAM modulation)

From: A study of development of transmission systems for next-generation terrestrial 4 K UHD and HD convergence broadcasting

Number Total data rate (bps) 4 K layer data rate (bps) HD layer data rate (bps) 4 K layer code rate HD layer code rate FFT size Guard interval Pilot mode Number of syms a Frame length Extended mode Frame-closing symbol
1 28,439,336 21,329,502 7,109,834 4/5 4/5 8,192 1/128 PP7 200 243.51 ms Yes No
2 29,344,584 22,234,750 7,109,834 5/6 4/5 8,192 1/128 PP7 200 243.51 ms Yes No
3 28,949,373 21,712,029 7,237,343 5/6 5/6 8,192 1/32 PP7 200 249.16 ms Yes No
  1. aNumber of OFDM symbols in a frame.