Alcatel-Lucent 9500 MPR - Figure 48. ASAP Unit; Figure 49. Modem Unit

User Manual
Product information and planning
9500 MPR Rel. 3.1
3DB18809AAAA Issue 1 131/980
Figure 48. ASAP unit
2.8.1.7 Modem unit
Figure 49. Modem unit
In Tx direction, the MODEM unit generates the IF signal to be sent to an Outdoor Unit. Such signal
contains a Constant Bit Rate signal built with the Ethernet packets coming from the Core-E; those packets
are managed in a different way depending on their own native nature.
Digital Framer
– Classification of incoming packets from the Core-E (QoS)
– Fragmentation
– Air Frame Generation (synchronous with NE clock)
Digital Modulator
Analog ChainAnalog Chain
GbE Serial from/to Alternate
Radio Board for RPS
TX
MODULATOR
RX
DEMOD
MODEM
ASIC
DAC
/ 2
DAC
I
Q
IF RX
311 Mhz
ADC
/ 2
ADC
I
Q
126 Mhz
IF cable
interface
AIR FRAMER
PDH/Data
management
IDU/ODU
communication
EPS
TX
AIR deFRAMER
PDH/Data
management
ODU/IDU
communication
RPS
RX
FPGA
(Guinnes)
IF TX