60Ghz 100Mbps and 1Gbps full duplex wireless connections:

License-free 60GHz radios have unique characteristics that make them significantly different from traditional 2.4GHz or 5GHz license-free radios and from licensed-band millimeter-wave radios. These characteristics give 60GHz radios operational advantages not found in other wireless systems.

License-Free Spectrum The FCC allocated an unprecedented 7GHz of un-channelized spectrum for license-free operation between 57-64GHz. This compares to less than 0.5GHz of spectrum allocated between 2-6GHz for WiFi and other license-free applications. For the first time, sufficient spectrum has been allocated to make possible multi-gigabit Radio Frequency (RF) links.

Narrow Beam Antennas The very narrow beam associated with 60GHz radios enables multiple 60GHz radios to be installed on the same rooftop or mast, even if they are all operating at the same transmit and receive frequencies. Co-located radios operating in the same transmit and receive frequency ranges can easily be isolated from one another based on small lateral or angular separations and the use of cross-polarized antennas.

Oxygen Absorption and Security

Oxygen attenuates 60GHz signals, a property that is unique to the 60GHz spectrum. While this limits the distances that 60GHz links can cover, it also offers interference and security advantages when compared to other wireless technologies. Small beam sizes coupled with oxygen absorption makes these links highly immune to interference from other 60GHz radios. Another link in the immediate vicinity will not interfere if its path is just slightly different from that of the first link, while oxygen absorption ensures that the signal does not extend far beyond the intended target, even with radios along the exact same trajectory.

These same two factors make the signal highly secure. In order to intercept the signal, one would have to locate a receiver lined up on the exact same trajectory, and in the immediate locale of the targeted transmitter. The intercepting receiver would have to be tuned to the carrier signal of the transmitting radio and be in the main beam in order to ensure reception, and the presence of this radio would block/degrade the transmit path of the transmitting radio and jam its receive path. The net result is that the interceptor would be unlikely to actually obtain data from the link and would likely be detected by network administrators. It would typically be easier to dig into conduit and tap into a fiber-optic cable than to find a way to install a rogue receiver to intercept a 60GHz transmission without being detected.

Key Features Of 60GHz Links

Performance:

• License-free operation in the U.S. and Canada
• Highly secure, narrow antenna beamwidths
• Interference-free operation, enabling high-density deployments
• Full rate, full duplex, Gigabit or Fast Ethernet
• AdaptRate™ and AdaptPath™ switching overcomes rain fades
• Low latency for fiber-equivalent performance
• Forward Error Correction yields maximum link range
• Add/Drop Ports

Reliability:

• Rigorous HALT/HASS testing
• Up to 99.999% availability; 28-Year MTBF

Ease-of-Use:

• Connects directly to standard network equipment
• All-outdoor, compact design
• Low voltage power cabling
• Rapid & flexible deployment
• Embedded web and SNMP based network
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