MOJIX Inc. STAR1000C Manual De Usuario

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MOJIX STAR User Manual 
www.mojix.com 
 
the unwanted direction of arrival of the interferer. Interference excision identifies the 
waveform class of the interferer and cancels the interference in frequency and time 
domain in the signal processing chain of the received signal. 
2.  Air Interface Assembly 
The AIA is powered directly by the 48 VDC power supply and the AIA in turn powers 
each Exciter. Each exciter is connected to the AIA by RJ-50 cable, commonly used in 
cable TV, and receives supply voltage, command and control signals, and baseband RF 
over this medium. The AIA is typically connected to the enterprise via the LAN or an 
optional WLAN.  
Each exciter, as depicted in Figure 3, creates and is associated with a single 
interrogation space, which is individually addressed and controlled by the AIA. Exciters 
are physically positioned according to business process needs to provide optimal  
performance in exciting Gen2 tags. The AIA is ordinarily positioned as an ‘eye in the 
sky’ with a vantage point to all Exciters in the system – this can be line of sight (LOS) 
or non-line of sight (NLOS) but always within the rated Rx range. 
 
Rear View 
 
Right View 
 
Rear Right View 
 
Bottom Left View 
Figure 2 
The STAR-1000 Air Interface Assembly contains a 1 x 4 array assembly, and digital 
and RF processing assemblies. The overall package dimension shown in Figure 5 is 30” 
x 10” x 10” (L x W x D). The AIA utilizes classical, fully active, phased array antennas 
for enabling the visibility into the space dimension. The smart array approach adopted 
by Mojix is based fully on digital processing techniques, thereby providing very high 
resolution for estimation of direction of arrival of the signal of interest (SOI), enabling 
the system to provide accurate location information on the tag position in the three 
dimensional Euclidean space. The STAR-1000 AIA signal processing platform is linked 
to a central, generic host computer, and controller via a standard Ethernet 10BaseT 
(RJ45)-connector. The controller can drive an arbitrary number of STAR-1000 systems 
Mojix STAR User Manual 1.2.doc 
 
Friday, October 12, 2007 
 
Copyright © 2007 MOJIX Corp.  Content Copyright © 2007 
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