Power Monitoring; Adaptive Equalization; 1+0 Repeater (With Mpt-Hc/Hc-Hqam/Xp/Xp-Hqam/9558Hc Only, For Mpr-E) - Alcatel-Lucent 9500 User Manual

Functional description
The capability to adjust the transmitted power in a static and fixed way (RTPC = Remote
Transmit Power Control) has been introduced for those countries where, due to internal
rules, the ATPC function is not accepted or for those hops in which due to the short length
and interface problems, a fixed reduced transmitted power is preferred. The range of the
possible attenuation depends on the frequency band involved. The setting of the transmitted
power can be done locally through MCT.
The Output power is band- and modulation-dependent.
3.10.8.4 — Power monitoring
The MPT-HC/HC-HQAM/XP/XP-HQAM/9558HC incorporates a detector for Tx power
measurement. It is used to provide measurement of forward power as a performance
parameter and to provide a calibration input for transmitter operation over temperature and
output range.
Viewed Tx power ranges always match the capabilities of the MPT-HC/HC-HQAM/XP/
XP-HQAM/9558HC for a given modulation. When modulation is changed, the CT
automatically adjusts/restricts Tx power to be within the valid range.
3.10.8.5 — Adaptive equalization
Adaptive equalization (AE) is employed to improve reliability of operation under
dispersive fade conditions, typically encountered over long and difficult paths.
This is achieved through a multi-tap equalizer consisting of two registers, one with feed-
forward taps, the other with feed-back taps. Each of these registers multiply successive
delayed samples of the received signal by weighting coefficients to remove propagation-
induced inter-symbol interference.
3.10.8.6 — 1+0 Repeater (with MPT-HC/HC-HQAM/XP/XP-HQAM/9558HC
only, for MPR-e)
The 1+0 repeater configuration can be setup with two MPR-e placed back-to-back as
shown in
150
Figure 3.62.
MPR-e and MSS-1c User Manual 3DB19901EFAA Edition 01