User's Manual

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620004-0 Rev. B
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7.4.5 Considerations for Re-Radiation (over-the-air) Systems
The LGCell can be used to extend the coverage of the outdoor network by connecting
to a roof-top donor antenna that is pointed toward an outdoor base station. Additional
considerations for such an application of the LGCell are:
• Sizing the gain and output power requirements for a bi-directional amplifier
(repeater).
• Ensuring that noise radiated on the uplink from the in-building system does not
cause the outdoor base station to become desensitized to wireless handsets in the
outdoor network.
• Filtering out signals that lie in adjacent frequency bands. For instance, if you are
providing coverage for Cellular B-band operation it may be necessary to filter out
the A, A’ and A” bands which may contain strong signals from other outdoor base
stations.
Further information on these issues can be found in LGC Wireless’ application notes
for re-radiation applications.