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LANCOM L-32x Access Point series
Chapter 7: Options and accessories
84
EN
data and proceeds to use the same unit for the transmission to the client.
Antenna diversity ensures that the various clients associated with the Access
Point always use the send/receive unit with the best signal.
7.1.2 Polarization diversity
Other diversity techniques process the two signals and combine them into a
single signal. The most common methods are space diversity and polarization
diversity. LANCOM Systems supplies various polarization diversity antennas
for connection to LANCOM devices. With these models, two orthogonally
polarized signals are received at a transmitter/receiver unit and combined to
form a single signal which is stronger than the two individual signals. This
improvement is the polarization gain.
7.1.3 MIMO
MIMO also uses polarization antennas which can process two orthogonally
polarized signals. Different to polarization diversity, MIMO uses each of these
signal to transport a separate data stream and acheive twice the data
throughput.
7.1.4 Installing the AirLancer Extender antennas
Not for LANCOM L-
320agn Wireless
The following diversity antennas are available as accessories for the L-32x
Access Points:
AirLancer Extender O-D80g (2.4 GHz band ), item no. 61221
AirLancer Extender O-D60a (5 GHz), item no. 61222
AirLancer Extender O-D9a (5 GHz), item no. 61224
Before mounting external antennas, please observe the information
on lightning protection in the LANCOM Outdoor Wireless Guide (sup-
plied or available as a download from www.lancom.eu
). Mounting
antennas without adequate lightning protection could lead to serious
damage to the access point and the network infrastructure connected
to it.
To install an optional AirLancer antenna, switch the device off by unplugging
the power cable. Now carefully unplug the three diversity antennas from the
back by unscrewing them. Connect the AirLancer antennas to the antenna
connectors marked 'ANT 1' and 'ANT 2'. With a LANCOM L-322agn dual
85


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