Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
HURTO mapping can use all the RS codes above plus codes with decreasing FEC payload until code rate is 0.5.
The uncoded maximum bitrates for Data payload are the result of multiplying coded maximum bitrates by RS
coding rate.
B.2 Delimiters
Delimiters are HURTO modulated for robust OFDM transmission.
Control symbols have modulation and trellis coding schemes similar to HURTO data symbols, so the maximum
coded data rate is the same.
Delimiters use a specific RS code with rate 2/3. Additionally, a CRC-CCITT is applied which implies a rate loss of
176/192.
So in the same conditions as assumed for Data payload, the Delimiters data rate is given in Table 70
Uncoded bitrate (Mbps)
Type I 2.47
Type II 1.82
Type III 1.01
Table 70 Coded maximum bitrates for Delimiters
Submission page 444 UPA-OPERA