R&S SMCVB-K163, User Manual

Page: 52 / 92

Performing DVB-T Signal Generation Tasks
R&S
®
SMCVB-K163
52 User Manual 1179.0997.02 ─ 02
The "Info" side tab displays physical properties of the input TS stream data.
5.2.3 How to Monitor an Internal TS Player Signal
The R&S SMCV100B receives internal TS input data as described in Chapter 5.1.3,
"How to Generate an Internal TS Signal" , on page 50.
► Select "Input Signal > Info"
The "Info" side tab displays physical properties of the TS player stream data.
5.3 Calculating the Input Data Rate
The calculation of the input data rate depends on the coding hierachy, see " Hierarchy"
on page 15.
Input data rate for nonhierarchical coding
f_in = (987/1207) * CR * (1/(1+GI)) * q * (PL/188) * BW
where
f_in = input data rate in [Mbit/s]
CR = code rate [1/2, 2/3, 3/4, 5/6, 7/8]
GI = guard interval [1/4, 1/8, 1/16, 1/32, off = 0]
q = bits per carrier constellation (QPSK: q=2, 16QAM: q=4, 64QAM: q=6)
PL = packet length [188, 204]
BW = used bandwidth [MHz]
Input data rate for hierarchical coding
16QAM:
f_in_HP = (987/1207) * CR_HP * (1/(1+GI)) * (4/2) * (PL/188) * BW
f_in_LP = (987/1207) * CR_LP * (1/(1+GI)) * (4/2) * (PL/188) * BW
Calculating the Input Data Rate