Modem Performance; If Performance - Huawei OptiX RTN 600 Product Description

7.1.3 Modem Performance

Table 7-3 Modem performance
Item
Modulation scheme
Channel spacing
(MHz)
Encoding mode
Adaptive
time-domain
equalizer for
baseband signals
a: At 18 GHz, the channel spacing is 13.75 MHz. At other frequency bands, the channel spacing is 14 MHz.
b: At 18 GHz, the channel spacing is 27.5 MHz. At other frequency bands, the channel spacing is 28 MHz.

7.1.4 IF Performance

Table 7-4 IF performance
IF signal
Transmit frequency (MHz)
Receive frequency (MHz)
Impedance (ohm)
ODU management signal
Modulation scheme
Transmit frequency (MHz)
Receive frequency (MHz)
Commercial in Confidence
4xE1
QPSK 16QAM QPSK
7 3.5 13.75/14
Reed-Solomon (R-S) encoding for PDH signals
Trellis-coded modulation (TCM) and the R-S two-level encoding for SDH
signals
Consisting of the 24-tap feed forward equalizer filter and the 3-tap decision
feedback equalizer
Item
OptiX RTN 600
Performance
8xE1
16QAM QPSK
a
7 27.5/28
Performance
350
140
75
ASK
5.5
10
Product Description
16xE1 STM-1
16QAM 128QAM
b a
13.75/14 27.5/28
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b