D. Roviras et al., WIRELESS INFRARED FACTORY NETWORK FOR HAND-HELD TERMINALS, European transactions on telecommunications and related technologies, 6(2), 1995, pp. 207-216
An experimental wireless infrared network with ISDN compatibility is d
escribed. This factory network has been studied in a European project:
''FCPN'' (Factory Customer Premises Network). The architecture of the
network is a cellular one. Infrared cells are connected together by a
high-speed optical fiber backbone. Hand-held terminals communicate vi
a an infrared (IR) channel based on a diffusion technique. The communi
cation protocol on the infrared channel is based on the ISDN protocol
with standard ISDN rate (2 x 64 kbits/s + 16 kbits/s). Measurements of
diffusion properties of standard construction materials are presented
. These properties are in good agreement with the requirements of an i
ndoor IR diffuse transmission. Architectural choices for the IR transc
eiver are discussed with special emphasis on consumption reduction for
mobile-terminals autonomy improvement. Key elements of the IR transce
iver implementation are described. Experimental results for an LR diff
use channel are presented, showing the suitability of such a transmiss
ion technique for indoor hand-held terminals. Performances of the syst
em are described in term of Bit Error Rate measurements.