Wi-Fi "Wireless" Connections

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"Wireless" Connections For Audio
by Dan Shanefield
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Name: Bluetooth...Zigbee...Wi-Fi...Wi-Fi...Wi-Fi.....UltraWideBand
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IEEE#:802.15.1... 802.15.4...802.11b...802.11a ..802.11g..802.15.3a
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Approx.
Range: 10Meters....75M........100M...... 20M........ 50M .....20Meters

.............................-----------------------
Modul'n:.................PhaseShiftKey.............................PulsePosition

.........................................................-----------------------
........ Freq.Sh.Key.................................OrthogFreqShKey

..........----------------------....................-----------------------
Tuning:Frequency Divn. .......CodeDiv ...OrthogFreqDiv.........FreqDiv
.............Spread Spectrum...........S.S...........S.S........................S.S.
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Freq.: 2.402 to .....914MHz,....2.4GHz......5.15GHz...2.4GHz ..3.1 to
.........2.480GHz.....2.4GHz ....................to 5.825GHz .......10.6GHz
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Practical [*]
Rate:...1 Mbps...250kbps..6Mbps ........22Mbps....22Mbps...500Mbps
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Battery
Usage: ..100 mW ..1 mW(!)...200 mW....33 mW ....65 mW ......1 mW

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Applcn: Headph,....TV & DVD ...........HighSpeed Connec'n.
...............Keybds,.....Remote..... Laptop- ...........................(NotUsed
.............Audio...........................to-Web..................................Yet)

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[*] The theoretical rate is higher.

Also, Radio Frequency Identification ("RFID") in E-ZPass tags,
on library books, shipment tags, keyless entry cards, and now
even implanted in people, uses 125 kHz, 13.56 MHz and 900 MHz.

Data for this chart compiled from: IEEE Spectrum, Sept.2003,
p. 27; EE Times, Oct.11, 2003, p. 1; Sci. Amer., June 2004,
p. 85; PC Mag., May 18, 2004, p. 87; and Nuts & Volts, Aug.
2004, p. 88.
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