XMax

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xMax developed by xG Technology, LLC is a radio frequency (RF) modulation and encoding technology that uses individual or "integer" sinusoidal waves to convey information. While applicable to wired mediums such as copper and coaxial lines, the technology is first being introduced as a wireless communications technology whereby its developers claim that it is capable of extending the range and reducing the transmit power compared to conventional approaches, including cellular technologies and fixed wireless approaches such as WiMAX. The company announced in July 2006 that with regional partners they are building a US-wide mobile phone service using xMax handsets with VoIP starting in the second quarter of 2007 (xG Technology announces mobile VoIP program).

[edit] Some current specifications

• Antenna: One omnidirectional transmitter located on TV broadcast tower at a height of 850 feet;

• Range: 20 miles, covering the cities of Miami and Fort Lauderdale, including inside buildings (see map).

• Data rate: At least 10 Mb/s throughout the coverage area.

• Spectrum used: A 6 kHz carrier on dedicated spectrum and 10 MHz of information-bearing spread spectrum in the unlicensed 900 MHz band.

• Interference: None, despite the presence of a TV transmitter on the same tower.

• Power: A maximum of 50 W for the carrier and less than 0.15 W for the information-bearing channels.

[edit] See also

• Shannon-Hartley theorem
• WiMax

[edit] External links

• xg Technology
• TechWorld.com – xMax sparks low power wireless revolution
• MRT Magazine Features xMax - Too good to be true?
• New Technology Could Kill WiMax?
• Joseph A. Bobier's Vision Statement about his brain child xMax

v • d • e  Internet access methods
Dial-up • ISDN • DSL • Cable • Wi-Fi • WiMAX • UMTS-TDD • HSDPA • Satellite • Fiber Optic • Power-line Internet