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More interference for the 2.4Ghz downlink



Well, we take it on the chin again. The 2.4Ghz downlink will get more grief.
Thought you might be interested in this story.

By Jay Wrolstad
Wireless NewsFactor
May 17, 2002
Seeking to speed the deployment of wireless broadband  in the United States,
the Federal Communications Commission  (FCC) on Thursday amended its
regulations on spread-spectrum technologies used by fixed wireless
operators.

Under the adopted changes, the FCC will allow both Bluetooth  and 802.11
(Wi-Fi) local area network (LAN) wireless technologies to be combined in a
single device and to share spectrum in unlicensed bandwidths.

"We are adding flexibility and allowing manufacturers to introduce new
products that were not permitted under former rules," Neal McNeil, senior
engineer for the FCC, told Wireless NewsFactor.
Specifically, the agency has modified Part 15 of its rules to permit new
digital-transmission technologies to operate in the unlicensed 902-928 MHz
(915 MHz), 2400-2483.5 MHz (2.4 GHz) and 5725-5850 MHz (5.7 GHz) bands under
the current rules for spread-spectrum systems.

The FCC also offered relaxed regulations for the design and operation of
FHSS systems in the 2.4 GHz band and eliminated the processing-gain
requirement for direct-sequence spread-spectrum (DSSS) systems.

Big Win for Lobby

"It looks like a big win for the LEA. The frequency-hopping proposal we
supported was adopted, with adaptive hopping optional," said Robert
Primosch, License Exempt Alliance (LEA) counsel for the Wireless
Communications Association International (WCA).

He told Wireless NewsFactor that the FCC also adopted a proposal to permit
alternative digital systems to be authorized under Part 15, "to operate with
the same power-flux density limit as conventional spread-spectrum systems."
Primosch lobbied for the changes on behalf of the WCA.

73
Gunther Meisse
W8GSM

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