Overview
60GHz Wireless Technology Overview
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.
Easy to Install and Align
While the beam width is much narrower than for other license-free and licensed-band radios, it is still wide enough to be accurately aligned by a non-expert installer with the use of a simple visual alignment tool. Note that these beam widths are much wider than those of free space optic systems, and are not affected by building sway from wind nor tilt from sun heating.
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.
We provide all required mount and installation accessories with the link - all that must be added is the user site fiber and power cabling.
Key Features
- 60GHz Radios: License-free 60GHz radios have unique characteristics that provide operational advantages over other solutions.
- Narrow Beam Antennas: associated with 60GHz radios enable multiple radios to operate on the same rooftop or mast, and provide interference immunity from other 60GHz links.
- Easy to Install and Align: our radios are easy to install and align by non-expert installers with the use of a simple visual alignment tool provided with the product.
- High Data Transmission Security: Small beam sizes coupled with the oxygen absorption properties of 60GHz spectrum make the signal highly secure.
Click here for a good Wireless Technology Comparison>>
60GHz Link Availability
Link availability is typically expressed as "n-nines" where n is "five" for 99.999% availability (< 5.3 minutes of outage per year), "four" for 99.99% availability (< 53 minutes of outage per year), etc. Note that an "outage" may not actually mean that data is no longer delivered by the link, but rather indicates that the data bit error rate (BER) is elevated above a specified level (which varies by manufacturer). We quote link availability based on when the BER exceeds one error per trillion bits (10-12 BER). However, other manufacturers routinely specify link availability based on less stringent BER limits. The main factors in determining the availability of 60GHz links are heavy rainfall probabilities and distance. (more)
Rainfall and 60GHz Radios
Like all
radio links that operate above 10GHz, intense
rainfall significantly limits the distance over
which 60GHz links can transmit data error-free.
Rainfall statistics have been extensively
studied throughout the United States to support
millimeter-wave link deployments, primarily for
cellular telephone network backhaul. These
statistics allow us to determine how many
minutes per year a 60GHz link of a given
distance will be impaired due to short periods
of intense rainfall. Note that intense rainfall
occurs in relatively small, fast-moving rain
cells, therefore these events are short-lived
for any specific location. Based on the
availability requirements of the application,
the maximum link is determined based on the
rainfall zone where the link is to be
deployed. Our radios outperform other 60GHz
radios due to the inclusion of a strong Forward
Error Correction (FEC) code that is transmitted
with the data. FEC provides another 6dB of link
margin by correcting most of the errors due to
heavy rainfall. This allows for up to 30% longer
link distances.
Contact us for
specific distance and availability calculations
for your solution.
Choice of 60GHz and E-Band Links
Both bands
have unique advantages, and with us you
chose the types of links that make the most
sense for your business and your
applications. Whatever your choice, you get
the peace of mind of our experience, service
and quality.
Best
Performance
We offer
uncompromising performance. Our links
feature an "always full rate", very low
latency, GigE connection, making it a direct
substitute for a GigE fiber connection.
Beyond offering the best data performance in
the industry, we add a strong Forward Error
Correction code to the transmitted data,
correcting most of the errors that occur as
the link approaches threshold due to moments
of heavy rainfall. This allows the customers
to deploy gigabit wireless links links at
distances 30% longer than competing
products. Also, since the signal is fully
digitally regenerated upon receipt, it is
possible to daisy-chain multiple links
without accumulating analog noise with each
hop. This makes our wireless links the
natural choice for building virtual fiber
network operator distribution backbones.
Highest
Availability
AdaptRate
links are the only full-rate GigE links that
can automatically compensate for heavy rain
downpours by temporarily switching to
100Mbps data rates. This allows users to use
GigE data rates at link distances that would
otherwise only operate reliably at 100Mbps.
At traditional GigE link distances,
AdaptRate links provide ultra-critical
applications link availability levels that
far exceed what was previously achievable.
Simplest to
Install
We realize
that installation material and labor can be
a significant portion of the customer's
total cost of ownership. We include power
supplies, all installation materials (except
for customer premise fiber cables and power
wiring) for both mast and wall mounting with
the standard product, and provides both a
simple Visual Alignment Tool (VAT), that
allows the installer to quickly align the
radios on the main antenna beam, as well as
Receive Signal Level and Signal Quality
voltage test cable to ensure that the radios
are optimally aligned. Installers can
complete the installation quickly, with
confidence that the link is correctly
installed.
Most Reliable
Bridgewave
employs state-of-the-art HALT and HASS test
methodologies to eliminate design and
workmanship defects that could result in
reduced system lifetime or premature field
failures. Highly Accelerated Life Testing
(HALT) is used during the design cycle to
subject the product to ever increasing
thermal and mechanical stress levels until
the units fail. Design weaknesses are
exposed and corrected before the product
ever goes into production. Once the design
has been validated through HALT, each
production unit goes through a reduced
version of this testing called Highly
Accelerated Stress Screening (HASS) that is
designed to expose workmanship or component
defects that may occur during the
manufacturing process. HASS is designed to
identify specific units that may experience
premature field failures, to avoid field
outages and re-installation/repair labor.
HALT and HASS testing is costly, but we
believe that the overall result is a
reduction in the customer's overall cost of
ownership.
Bridgewave also employs a novel, highly-integrated radio architecture that eliminates many of the components and mechanical waveguide structures traditionally found in millimeter-wave radios and high-performance digital designs. This not only results in the lowest manufacturing cost, but also in one of the highest calculated MTBF levels (28 years) found in the industry, regardless of operating frequency and link capacity. These cost and "extended lifetime" savings are simply not possible with the highly modularized designs found in other gigabit speed links.
- Reliable, Affordable Wireless Solution: Gigabit solution with the highest performance and best reliability with a purchase price of less than half of the prevailing gigabit wireless market price.
- Fiber-Like Performance: Direct substitute for gigabit Ethernet fiber, with very low latency and GigE speeds.
- Point-and-shoot radio alignment with easy-to-use network management system: integrated Ethernet switching allows operators to add/drop Ethernet services at each point of a distribution backbone, without the need for external network equipment.
- Rigorous Reliability Testing: HALT and HASS test methodologies expose design weaknesses before the product ever goes into production.

