Slash bandwidth costs and unleash the capacity of your satellite networks with the VPCMA-70 and VPCMA-L (for L band) Hub Cancellers from ViaSat.  These frequency-reuse appliances harness the power of ViaSat’s patented Paired Carrier Multiple Access (PCMA) technology to cut satellite bandwidth needs by as much as fifty percent.

By simply adding a PCMA appliance to your satellite network, you can expand the capacity of transponders, free up bandwidth for more applications, and lower your network’s operating costs.  For example, while satellite space segment costs can vary greatly depending on location and usage, a network operator paying $4,000 per MHz per month for 54 MHz can save up to $907,200 a year on bandwidth by using the VPCMA-L.

ViaSat's hub cancellers boost the capacity of your satellite transponder space by combining the uplink and downlink transmissions into the same bandwidth.  While most satellite transmissions require separate frequencies to transmit and receive, a VPCMA device enables two different signals to overlap in frequency, which increases the bandwidth available to the system.  The appliance uses an adaptive self-interference cancellation technique to subtract your transmitted signal to recover the desired signal.  The canceller works with all modulation and FEC techniques on “bent pipe”, non-cross-strapped satellite networks to enhance the benefits of any advanced modulation techniques or turbo coding you may already use.