The new CDM-760 builds on Comtech EF Data’s family of trunking modems. It provides, the company claims, ultra wide band symbol rates, near theoretical performance with minimal implementation loss, the DVB-S2 Efficiency Boost technology, Super Jumbo Frame Ethernet support and other value-added features.
When coupled with the native Super Jumbo Frame Ethernet interface, the CDM-760 can reportedly process Ethernet frames at greater than 1.2 million packets per second
The CDM-760 trunking modem reportedly supports symbol rates of 1 ksps to 150 Msps and data rates up to 314 Mbps simplex and 628 Mbps duplex. Demonstrating an industry breakthrough, the company claims, these data rates can be achieved when using 8PSK, 16APSK or 32APSK modulation. When coupled with the native Super Jumbo Frame Ethernet interface, the CDM-760 can reportedly process Ethernet frames at greater than 1.2 million packets per second.
DVB-S2 EN 302 307 is widely accepted as the most spectrally efficient standards-based waveforms. The new CDM-760 features, the company claims, an enhancement to DVB-S2 with its proprietary DVB-S2 Efficiency Boost (DVB-S2-EB1) waveforms. The CDM-760 reportedly doubles the number of available MODCODs, introduces three new rolloff figures (5%, 10% and 15%), and minimises implementation loss to near theoretical operation. The result. according to an official product release, is a 10-35% increase in spectral efficiency compared to the DVB-S2 standard, without increasing power or occupied bandwidth. The CDM-760 is reportedly software upgradeable to support future standards including DVB-S2 Efficiency Boost, DVB-Sx and DVB-S3.
The CDM-760 offers additional features, the company claims, that enable OPEX reduction and the best possible use of satellite link resources, including Adaptive Coding and Modulation operation, premier encapsulation methods, GZIP lossless payload compression and Comtech EF Data’s DoubleTalk Carrier-in-Carrier bandwidth compression that reportedly allows transmit and receive carriers of a duplex link to share the same transponder space.
“By using this combination of advanced technologies and innovative architecture to support high-speed trunking, ISPs and telco operators can achieve unparalleled space segment efficiencies and minimise unnecessary overhead for satellite links,” commented Louis Dubin, Vice President Product Management for Comtech EF Data.
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