Comtech EF Data Shows All...High-Speed Trunking Modem [SatNews] These technologies alone offer enormous savings to the ISP and telco operator. When used in combination, however, the savings are astronomical.

 

The new CDM-760 Advanced High-Speed Trunking Modem supports 100 ksps - 150 Msps symbol rates and data rates up to 314 Mbps simplex and 628 Mbps duplex using 8PSK, 16APSK or 32APSK. Learn more about this industry breakthrough at booth 7009 at the Satellite 2013 show and stand C1-31 at CABSAT 2013.

Coupled with the native Super Jumbo Frame Ethernet interface, it processes Ethernet frames at > 1.2 million pps. It features DVB-S2 Efficiency Boost waveforms (an enhancement to DVB-S2), doubles the number of available MODCODs, provides 5 percent, 10 percent and 15 percent rolloffs, and minimizes implementation loss.

The results = 10-35 percent increase in spectral efficiency without increasing power / occupied bandwidth.

The CDM-760 is software upgradeable for future standards - DVB-S2-EB1, DVB-Sx and DVB-S3.

• 100 ksps - 150 Msps
• Up to 314 Mbps Simplex & 628 Mbps Duplex with 8PSK / 16APSK / 32APSK
• > 1.2 Million pps
• 5 percent, 10 percent and 15 percent Rolloff
• DVB-S2 Efficiency Boost
• Upgradeable to DVB-Sx & DVB-S3

Implementing Adaptive Coding and Modulation (ACM) operation allows link margin to be converted to user capacity during non-faded conditions by taking advantage of the actual signal to noise ratio rather than calculated worst case signal to noise.

By using the best encapsulation methods, the CDM-760 further increases throughput by using minimal overhead. In G.703 synchronous mode, users can implement monitor and control over the satellite with no additional overhead. When using Ethernet bridge mode, less than 1 percent overhead is used for encapsulation.

The optional K4 GZIP lossless compression engine performs real-time compression of Ethernet traffic and is capable of running at the full rate of the modem. Offering 52 percent to 59 percent compression rates at random packet sizes using the Calgary Corpos bitstream, K4 GZIP can greatly increase the throughput of the satellite link, or reduce required bandwidth.

Additionally, the CDM-760 leverages our powerful DoubleTalk® Carrier-in-Carrier® “Adaptive Cancellation” technology. With the ability to overlay TX and RX carriers, Carrier-in-Carrier enables the operator to establish the perfect balance between bandwidth and power, enabling the best possible use of the satellite resource and reducing operating expenses (OPEX).

These technologies alone offer enormous savings to the ISP and telco operator. When used in combination, however, the savings are astronomical. The innovative high-performance architecture of the CDM-760 allows efficient networking and transport over satellite links while supporting a wide range of applications and network topologies.

 

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