lomaxe
Member level 1
Hi.
In ETSI EN 300 744 V1.6.1 (2009-01) "Digital Video Broadcasting (DVB);Framing structure, channel coding and modulation for digital terrestrial television" it is written:
For the symbol of index l (ranging from 0 to 67), carriers for which index k belongs to the subset
{k = Kmin + 3 × (l mod 4) + 12p ⎜ p integer, p ≥ 0, k ∈ [Kmin; Kmax] } are scattered pilots. Where p is an integer that takes all possible values greater than or equal to zero, provided that the resulting value for k does not exceed the valid range [Kmin; Kmax].
The pilot insertion pattern is shown in figure 11.
I have some difficalties with undetstanding the formula k = Kmin + 3 × (l mod 4) + 12p
Can somebody suggest me, how, for example, using the formula I can get the meanings of k=0,9,....(as shown in the Figure) for the case when time index of the COFDM symbol l=0.
In ETSI EN 300 744 V1.6.1 (2009-01) "Digital Video Broadcasting (DVB);Framing structure, channel coding and modulation for digital terrestrial television" it is written:
For the symbol of index l (ranging from 0 to 67), carriers for which index k belongs to the subset
{k = Kmin + 3 × (l mod 4) + 12p ⎜ p integer, p ≥ 0, k ∈ [Kmin; Kmax] } are scattered pilots. Where p is an integer that takes all possible values greater than or equal to zero, provided that the resulting value for k does not exceed the valid range [Kmin; Kmax].
The pilot insertion pattern is shown in figure 11.
I have some difficalties with undetstanding the formula k = Kmin + 3 × (l mod 4) + 12p
Can somebody suggest me, how, for example, using the formula I can get the meanings of k=0,9,....(as shown in the Figure) for the case when time index of the COFDM symbol l=0.