|
|
130 |
ETSI ES 201 980 V4.1.2 (2017-04) |
|
|
|
|
|
|
Carrier index k |
Phase index, ϑ1024[0, k] s = 4 |
Phase index, ϑ1024[0, k] s = 39 |
|
|
|
|
|
||
|
58 |
242 |
452 |
|
|
62 |
554 |
38* |
|
|
66 |
881* |
688 |
|
|
70 |
199 |
353 |
|
|
74 |
556 |
57 |
|
|
78 |
927 |
825* |
|
|
82 |
289* |
608 |
|
|
86 |
690 |
431 |
|
|
90 |
82 |
293 |
|
|
94 |
512 |
194* |
|
|
98 |
957* |
135 |
|
|
102 |
393 |
115 |
|
|
106 |
868 |
134 |
|
NOTE: |
Carrier numbers belonging to phase indexes marked with an asterisk "*" serve as AFS and gain |
|
||
|
references (see clause 8.4.4.1); the definitions of phase index are consistent; the amplitude |
|
||
|
definition is that one of the gain reference. |
|
|
|
8.4.5.2Cell gains
All AFS reference cells have a power gain of 1,0 i.e. the AFS reference cells are not boosted.
8.5Control cells
8.5.1General
The control cells consist of two parts:
•the Fast Access Channel (FAC), integrated in every transmission frame. It is used to quickly obtain the necessary information for the receiver to be able to demodulate the DRM signal;
•the Service Description Channel (SDC), repeated every transmission super frame. It contains all the additional information that describes the services currently available. The SDC is also used for Alternative Frequency Switching (AFS).
Figure 33 describes the time-frequency location of these signals.
transmission super frame transmission frame
SDC block
channel
f
bandwidth
t
symbols containing MSC and FAC cells
symbols containing MSC cells
symbols containing SDC cells
Figure 33: Time-frequency location of FAC and SDC signals
ETSI