If you have been
involved with radio frequency (RF) subscriber installations or troubleshooting,
you have likely come across the term MoCA, often pronounced like a popular
chocolate and coffee beverage. So what
is MoCA, and how does it impact the subscriber network?
MoCA is an acronym for Multimedia over Coax Alliance, an
international consortium that develops standards for networking over coaxial
cable. Since 2004, MoCA has been working
to provide high speed networking protocols and standards that enable the
existing coaxial cable and passives in the subscriber premise to interconnect
devices throughout the home. One example
would be using the coaxial cables in the home to provide bidirectional
communication between a “master” set top box and a series of “satellite”
Since most residential
and subscriber coaxial networks are in place, MoCA developed standards
intentionally to operate over existing cables and passive devices. While this is often the case, today’s high
definition and high speed services may require a bit of assistance to ensure
MoCA enabled devices are performing at their best. CommScope continues to innovate in the
subscriber space, and provides RF solutions that optimize the performance of
MoCA services and devices.
When optimizing MoCA
performance, there are three areas that require particular attention:
- Shielding: Crucial in all coaxial networks, it
is best optimized through the use of advanced tri-shield cable with tightly fit
connectors. CommScope’s XpressPrep
coaxial cable is ideal for this purpose.
We live in a world full of wireless signals, and optimized shielding
will help ensure excellent signal to noise performance.
- Port isolation: Subscriber coaxial networks are
interconnected by RF splitters and/or amplifiers. In these devices, port-to-port isolation must
be optimized to best optimize MoCA signal flow, and to prevent MoCA devices
from unnecessarily transmitting at too hot a level. Optimized isolation, not necessarily
minimized, helps to ensure this needed balance is maintained. CommScope’s APD
Subscriber Amplifiers offer this optimized isolation performance.
- Input filtering: This is needed at the input to
a subscriber residence. This prevents
MoCA services from being carried into adjacent subscriber locations. Filtering can be installed as a stand-alone
device or can be incorporated into house amplifiers, allowing a one-step secure
installation. Our MoCA enhanced APD amplifiers (one
link and a second
link) contain an integrated power over Ethernet (POE) filter.
MoCA has developed
standards and protocols for advanced networking in the home over existing
coaxial plant. In turn, CommScope has innovative
solutions to optimize and enhance those services. What can we do to help