User's Manual

General Chapter 4
RADWIN 1000/2000 User Manual Version 2.12 4-20
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Figure 4-15: Transmission Power and Antenna Parameters
The choice of Tx power, antenna gain and cable loss determines the EIRP
and is affected by such considerations as radio limitations and regulatory
restrictions.
Before proceeding to antenna installation details, the following background
information should be considered:
General
Each RADWIN 1000/2000 ODU is made of two radio transceivers (radios).
The radios make use of algorithms that utilize both polarization and space
diversity resulting in enhanced capacity, range and link availability. The
number of antennas (i.e. radios) used is determined by user configuration
and by automatic system decisions, explained below.
Dual Antennas at Both Sites
Using dual antennas at both sites (single bipolar antenna or two monopolar
antennas) enables the use of MIMO technology. With MIMO the system
doubles the link capacity. At the same time, it keeps the same rate and
modulation per radio as was used with single antenna, thus increasing
capacity, range and availability.