Newtec Proprietary
Confidentiality: Unrestricted
R3.2_v1.0
189/387
Feature Descriptions
MDM9000 Satellite Modem
16.6.7 Input Selection
MDM9000 >> Demodulator >> Input Selection
Following Input selections are possible:
• L-band RX A
• L-band RX B
• IFRx
16.6.8 Physical Layer Scrambler Signature
MDM9000 >> Modulator >> PL Scrambler Signature
The following information about the Physical Scrambler Signature is taken from the
DVB-S2 standard. Refer to the following document, ETSI EN 302 307.
In case of broadcasting services, the PL Scrambler Signature = 0 shall be used as default sequence,
this to avoid manual receiver setting or synchronization delays.
The PL Scrambler Signature, assuming values in the range 0 to 262 141, indicates the spreading
sequence number. The use of different PL Scrambling sequences allows a reduction of interference
correlation between different services. For the same purpose, it is possible to reuse a shifted version
of the same sequence in different satellite beams. Furthermore, the PL Scrambler Signature can be
unequivocally associated to each satellite operator, satellite, or transponder, thus permitting
identification of an interfering signal via the PL Scrambling "signature" detection. There is no explicit
signaling method to convey the PL Scrambling signature value to the receiver.
To Next Page
Loading...
