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EtherLinx™ communication technology is a transparent 802.11 firmware
and software-defined radio (SDR) solution.
Through the use of transparent software, firmware, and data networking
algorithms originally developed for counter-measures and electronic
surveillance techniques on US Military projects, EtherLinx has developed
a 802.11 based software product that enables a high-speed wireless
broadband capability.
At the same time mitigates the interference issue and provides
additional security layers better than current wireless methods.
EtherLinx™ software technology utilizes direct sequence
spread spectrum and a proprietary direct sequence code division
multiple access (DS-CDMA / BPSK /QPSK / and CCK) for secure data
transmission that prevents any type of eavesdropping.
EtherLinx™ transparent RF (Radio Frequency) signal, if
seen, appears as background noise. Even this detection can only
be accomplished with very expensive spectrum analyzers and these
devices would not be able to decipher the content or data carried
by the RF signal. A
data signal at the point of transmission is combined with a higher
data-rate bit sequence (also known as a chipping code) that divides
the data according to a spreading ratio.
EtherLinx™ transparent and redundant chipping code helps
the signal resist interference and also enables all of the original
data to be recovered if data bits are damaged or lost during transmission.
EtherLinx™ direct sequence contrasts with the other spread
spectrum processes in that it is far more robust and can cover much
longer distances than competing DS (direct sequence) or FH (frequency
hopping) spread spectrum products available today.
Because EtherLinx leverages
the emerging standards set forth by 802.11 and other RF technologies
in the media access control layer and the physical layer methods,
including coding descriptions and performance evaluations and saleable
data rates, EtherLinx™ technology provides for secure cost-effective
wireless network solutions by enabling intelligence in standard,
low cost CPE (customer premise equipment). Today spread spectrum
is at the heart of the WiFi standard and has been commercially accepted
in the marketplace, especially in local area wireless networks.
802.11b has become the standard in WLAN, but as a result of this
standard an inherit weakness has evolved via the new standard "
i.e.", security issues. It was found
that anyone with this technology could join other networks using
the same 802.11 protocols and have access to their data or eavesdrop
on the traffic over these networks without detection.
The data networking algorithms used in the EtherLinx
solution are the most secure and advanced in the industry and were
designed specifically to prevent eavesdropping and/ or attacks by
hackers. Latency is
minimized while allowing for the use of automatic repeat request
(ARQ) - a protocol for error control in data transmission.
When the receiver detects an error in a packet, it automatically
requests the transmitter to resend the packet.
This process is repeated until the packet is error free or
the error continues beyond a predetermined number of transmissions.
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