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Evolving Mobile Network concept known as Multiple
-Input/Multiple - Output (MIMO) have the potential to increase
communications data rates by 10-20 times above current systems. Such
systems will use multi-path reflections to create parallel channels in
the same frequency band, thereby increasing spectral efficiency.
MIMO networks are studied under a DARPA program, have the
potential to dramatically improve communications in urban and other
Non-Line-of-Sight multi-path conditions, where conventional techniques
are degraded. MIMO technologies could be employed in future mobile ad
hoc networks (MANETs) and is considered to be integrated as a wideband
communications adapter in the Joint Tactical Radio System (JTRS)
cluster.
A family of new ultra wideband (UWB) devices is also
considered for improving communications in extremely harsh
environments. Applications could offer highly accurate ranging and
passive radar. Among the program's developments is a Tactical
Voice/Data Radio (TVDR) with Multilateral Geolocation Ranging, a Low
Bit Rate Sensor Network with highly accurate geolocation. Development
of an ad-hoc networking and multiple access protocols to take
advantage of the unique properties of UWB and the integration of UWB
communications for sensors systems.
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