Features - Nera Evolution Series Technical Description

1.1.

Features

The Evolution Series microwave radio utilises the state-of-the-art technology to achieve low power
consumption and high reliability.
A high degree of RF circuit integration is achieved using Microwave Monolithic Integrated Circuits
(MMIC's). This, combined with a direct at RF modulation architecture, enables a broadband and compact
ODU design. Furthermore, patented power amplifier technology delivers low power consumption which
further enhances reliability.
The modem contains multidimensional coded modulation, combined with a powerful block code. The
resulting two-stage error correction improves system margin over traditional single FEC systems such as
QAM, TCM or MLCM. The modem is extremely flexible, enabling an optimum configuration for all
capacities and channel plans.
The ODU Unit consists of a XVCR and a Diplexer Unit. The ODU is frequency and capacity agile. The
tuning range is very wide and most frequency bands can be covered by four variants for the whole band.
The frequency setting is easy and is performed locally or remotely by the LCT function.
The ODU can for most frequency bands be mounted directly on the antenna, both in unprotected and
protected configurations. The ODU can also be mounted on the antenna pole, using a short flexible
waveguide to the antenna.
The InterFace Unit (IFU) is an extremely modular system, catering for the various system configurations
and traffic interfaces by plug-in modules. The IFU can easily be expanded from a single channel system
up to a traffic node handling up to 8 ODUs. The IFU contains the user interfaces, baseband processing
and multiplexing, management and radio interface.
The demodulator contains an integrated digital interference canceller, which can be used to provide the
XPIC function, enabling two carriers to be transmitted over the same frequency, using dual polarised
antennas.
The embedded PDH cross-connect allows flexible routing of Ethernet traffic and E1/T1-traffic between
the radio interfaces and the user interfaces.
The optional DXC-Unit in combination with an STM-1/OC-3 interface provides a direct interface from
this platform to a SDH/SONET network.
The equipment configuration, licenses and the operating software can be stored on the memory key
available for plug-in at the front of the equipment or downloaded to a computer. When a new Supervisory
Unit is inserted, the equipment configuration can then easily be restored to the radio equipment.
NGP\00329 Rev. C 23-06-2006 Evolution Series - XPAND 9