TABLE 2.1 Channel bandwidths for DVBT and DVBT2 DVBT DVBT2 1.7 MHz – 5 MHz – 6 MHz 6 MHz 7 MHz 7 MHz 8 MHz 8 MHz 10 MHz – 2.2 FFT size for DVBT two FFT sizes, 2k and 8k, are specified, DVBT2 comprises 1k, 2k, 4k, 8k, 16k and 32k FFT sizes. Table 2.2 shows the available FFT sizes for the 8 MHz variant. TABLE 2.2 FFT size parameters for DVBT2/8 MHz (from [EN 302 755]) 1k 2k 4k 8k 16k 32k Parameter mode mode mode mode mode mode normal carrier 853 1705 3409 6817 13633 27265 mode Number of carriers, Ktotal extended carrier 6913 13921 n/a n/a n/a mode normal carrier 0 0 0 0 0 0 mode Value of carrier number, Kmin extended carrier 0 0 0 n/a n/a n/a mode normal carrier 852 1704 3408 6816 13632 27264 mode Value of carrier number, Kmax extended carrier 6912 13920 n/a n/a n/a mode Number of carriers added on each side in extended carrier 0 0 0 48 144 288 mode, (see Note 2) Kext Duration, (for see Table TU T, 1024T 4096T 16384T 32768T 2.3) Duration, µs (see Note 3) 112 224 448 896 1792 3584 TU Carrier spacing 1/TU (Hz) (see 8929 4464 2232 1116 558 279 1 and 2) Spacing between normal carriers and carrier Kmin 7.61 MHz 7.61 MHz 7.61 MHz 7.61 MHz 7.61 MHz 7.61 MHz mode Kmax
TABLE 2.1 Channel bandwidths for DVBT and DVBT2 DVBT DVBT2 – – 6 MHz 7 MHz 8 MHz – 1.7 MHz 5 MHz 6 MHz 7 MHz 8 MHz 10 MHz 2.2 FFT size for DVBT two FFT sizes, 2k and 8k, are specified, DVBT2 comprises 1k, 2k, 4k, 8k, 16k and 32k FFT sizes. Table 2.2 shows the available FFT sizes for the 8 MHz variant. TABLE 2.2 FFT size parameters for DVBT2/8 MHz (from [EN 302 755]) Parameter 1k mode 2k mode 4k mode 8k mode 16k mode 32k mode Number of carriers, Ktotal normal carrier mode 853 1705 3409 6817 13633 27265 extended carrier mode n/a n/a n/a 6913 13921 Value of carrier number, Kmin normal carrier mode 0 0 0 0 0 0 extended carrier mode n/a n/a n/a 0 0 0 Value of carrier number, Kmax normal carrier mode 852 1704 3408 6816 13632 27264 extended carrier mode n/a n/a n/a 6912 13920 Number of carriers added on each side in extended carrier mode, Kext (see Note 2) 0 0 0 48 144 288 Duration, TU (for T, see Table 2.3) 1024T 4096T 16384T 32768T Duration, TU µs (see Note 3) 112 224 448 896 1792 3584 Carrier spacing 1/TU (Hz) (see 1 and 2) 8929 4464 2232 1116 558 279 Spacing between carriers Kmin and Kmax normal carrier mode 7.61 MHz 7.61 MHz 7.61 MHz 7.61 MHz 7.61 MHz 7.61 MHz
R-REP-BT.2254-2-2014-MSW-E.docx