Short-range devices are causing more inference problems in indust...
Short-range devices are causing more inference problems in industrial, scientific and medical (ISM) frequencies, particularly 900-928 MHz, 2,400-2,483.5 MHz and 5,725-5,850 MHz, according preliminary studies and anecdotal evidence, Canada said in a June 10 report to an ITU-R group…
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on spectrum engineering techniques. The concern is that short-range device emissions will cause harmful interference to users in the ISM bands and radio services outside the bands, Canada said. Operators and users can’t claim protection from interference, Canada said. Some channels in the 902 to 928 MHz band in a large urban area were fully saturated during a 24-hour period, according to preliminary measurements by Industry Canada. Canada has begun a measurement program to better understand the phenomenon. Potential solutions include greater use of cognitive radio equipment, using spectrum below 2.4 GHz or global or regional solutions, Canada said.