User Manual

7
MN024-08
• remote power supply: in case mains cannot be used for the Remote
Units, Britecell Plus offers a centralised power supply option, which
distributes both a DC low-voltage (-48V) power and the optical signals
through a composite fibre optic/copper cable;
• wide variety of RF passive devices: the connections between the
DAS and the local BTSs can be arranged so as to get the best fit for
customers needs. Britecell Plus equipment provides RF
splitters/combiners, cross band couplers, attenuators, duplexers for
UL/DL paths, thus allowing the maximum design flexibility;
• high reliability: high MTBF (Mean Time Between Failure).
1.4 Britecell Plus typical Applications
Thanks to its unique features Britecell Plus is the ideal solution to set up radio
coverage in may situations:
• Multi operator shared infrastructure: each mobile operator has its
own carriers, which must be transported without affecting the others.
Britecell Plus is capable of transmitting multiple carriers simultaneously,
while providing an independent level adjustment for each of them,
ensuring maximum performance and reducing infrastructure costs
• High rise buildings: RF signals from surrounding macrocells or
external BTSs are usually quite strong inside high rise buildings, and
cause so much interference that indoor mobile communications often
become impossible. By strategically placing antennas along the exterior
walls of the building, the signal to noise ratio can be optimised. This
interference control solves many problems, such as the “ping pong”
effect that sometimes is experienced when a mobile frequently changes
from an indoor to an outdoor coverage.
• Exhibition, conventions, and shopping centres: the critical point of
these environments is due to the high traffic loads, which are
furthermore highly variable. Thus, the main goal to achieve is setting up
a radio coverage which could effectively manage these variable traffic
loads, with neither undervalued nor overvalued infrastructure expenses.
A unique feature of Britecell Plus is that RF frequencies can be allocated
quickly when and where they are needed, thus reducing the
implementation cost. This makes Britecell Plus the proper solution also
for temporary or last minute requests (such as conferences).
• Airports: they require modular and flexible radio coverage, in order to
meet present needs while foreseeing future expansions. Britecell Plus
can manage high traffic loads providing high quality with minimum
environmental impact, while its modularity allows future extensibility.
• Corporate Building: inside a corporate building, difficult mobile
communications may limit business transactions. These environments
are often complex and densely populated with specific requirements to
be fulfilled: high traffic capacity, maximum expectations on Quality of
service, full compatibility with wireless standards and future
expandability. Britecell Plus guarantees high quality radio coverage