Comtech EF Data, a subsidiary of Comtech Telecommunications Corp., develops satcom equipment that is installed globally in commercial and government applications. Our products include modems, performance enhancement proxies, bandwidth and capacity management, encapsulators, receivers, converters, transceivers, amplifiers, block up converters, and terminals. Products are designed and manufactured in our Tempe, Ariz., facility.
Maintaining a reputation for product quality and reliability, Comtech EF Data is recognized as a technology leader and innovator. Examples of our advanced technologies that optimize satellite communications are:
DoubleTalk® Carrier-in-Carrier® Bandwidth Compression
Our revolutionary and award-winning DoubleTalk Carrier-in-Carrier is based on Applied Signal Technology’s patented "Adaptive Cancellation" technology that allows full duplex satellite links to transmit concurrently in the same segment of transponder bandwidth. This equates to unprecedented bandwidth efficiencies, and enables service providers and enterprise users to fully optimize their space segment.
Low Density Parity Check Coding (LDPC)
The industry’s most bandwidth-efficient forward error correction (FEC). When used in networks with lower FEC coding rates and higher data rates, the power and bandwidth savings offered by LDPC are most apparent. In conjunction with LDPC is 8-QAM modulation, which exhibits far superior performance compared with conventional 8-PSK. When LDPC and 8-QAM are combined, satellite transponder utilization can be maximized, resulting in minimized operating expenses.
2nd Generation Turbo Product Coding (TPC)
Offers increased coding gain, lower decoding delay and significant bandwidth savings when compared to traditional methods. The range of code rates offered spans Rate 5/16 through 0.95, depending on modulation type.
Modems with integrated IP module incorporate advanced features that maximize satellite link efficiency for IP networks. With optional, advanced header compression, payload compression and Quality of Service (QoS) features, bandwidth optimization can be taken to a new level.
Supporting contribution and distribution applications, our products are compliant with digital video broadcasting standards and interoperate with satellite service providers and encoding device vendors. Leveraging the bandwidth efficiencies of DVB-S2, the combined solution of our modems, modulators, demodulators, IP encapsulators and receivers can increase throughput by up to 30 percent compared to DVB-S.