xMax developed by xG Technology, Inc. is a mobile VoIP and data system operating in the license-free ISM 900MHz band (902-928MHz). xMax is an end-to-end Internet Protocol (IP) system infrastructure that includes a line of base stations, mobile switching centers (MSC), handsets, and modems.
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).
On Sept. 22, 2009, VoIP industry expert Rich Tehrani test drove the xMax mobile VoIP pilot network operated by the company in Fort Lauderdale, FL. His recent article, published on TMCnet on (referenced below) concluded: “xMax worked well and is real. When you realize that this company may have found a way to take a frequency riddled with wireless garbage and turn it into a fully functioning wireless voice and data network you start to see how much of a game changer this could be for the wireless industry.”
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Some current performance claims
- Antenna: commercially off the shelf antenna
- Range: typically 2-5 miles depending upon tower height and terrain.
- Data rate: 18 Mbps per basestation
- Spectrum used: Unlicensed 902-928 Mhz band
- Interference: Ability to accept interference found on 902-928 MHz band
- Power: Less than 1 W
Patents
The published patents assigned to XG so far are:
- US 6,782,057 Very High Speed Digital RF Clipper/Modulator, filed Dec. 2002
- US 6,839,571 RF Shielding Design for Wireless High-Speed Internet Access System, filed May 2001
- US 6,901,246 Suppressed Cycle Based Carrier Modulation Using Amplitude Modulation, filed Jul. 2001
- US 6,968,014 Missing Cycle Based Carrier Modulation, filed Feb. 2000
- US 7,003,047 Tri-State Integer Cycle Modulation, filed Jun. 2004
- US 7,023,932 Modulation Compression Method for the Radio Frequency Transmission of High Speed Data, filed Jan. 2004
See also
External links
- Portal for xMax
- xg Technology
- TechWorld.com – xMax sparks low power wireless revolution
- MRT Magazine Features xMax - Too good to be true?
- New Technology Could Kill WiMax?
- wireless voodoo? Skeptical article in The Register
- Spectrum Crisis Can Be Averted, VON
- xG Technology xMax Works as Advertised, Rich Tehrani, TMCnet.com
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