ADVANTECH DELIVERS THE WORLDS' FIRST SUCCESSFUL TRANSMISSION OF 155.52 MBPS IN 36 MHZ
Advantech AMT is proud to announce one of the world's first successful transmissions of 155.52 Mbps carrier over satellite with superior bandwidth and power efficiency using 64QAM and 32APSK.


    /High Tech - Internet News Articles/ - March 01, 2008 - Montreal, Canada, February 26, 2008 -- Advantech AMT Inc., a leading provider of advanced satellite and microwave products and solutions, is proud to announce one of the world's first successful transmissions of 155.52 Mbps carrier over satellite with superior bandwidth and power efficiency using 64QAM and 32APSK.

The Advantech implementation incorporates the most advanced Forward Error Correction coding such as Low Density Parity Check (LDPC) with concatenated BCH using 8/9 and ¾ code rates. LDPC has demonstrated its effectiveness, in comparison to other coding schemes such as turbo product codes (TPC) and become accepted as the new coding standard for the DVB-S2 standard. Advantech was first to market in developing DVB-S2 capable modulator supporting modulation schemes up to 32APSK. Complementing the Advantech DVB-S2 implementation is the new addition of 64 QAM with adaptive downlink equalization, which was specially introduced into the Advantech AMT-75 product line to provide an advanced modulation to further minimize the occupied satellite bandwidth.

Testing was performed by a leading North American telecom operator on a 54 MHz transponder, and demonstrated Advantech's capability to support 155Mbps carriers using both 32APSK and 64QAM. Advantech's implementation allows for 155Mbps to be supported across 36 MHz bandwidth using 64QAM 8/9 code rate. Additionally, the Advantech implementation makes it possible to support two carriers, one of 155Mbps and the other of approximately 40Mbps, across a 54 MHz transponder.

"This testing demonstrates that Advantech ranks among industry leaders in bringing advanced capability such as 64QAM, 32APSK and LDPC in very high-speed satellite links to fruition." Dr. Vagan Shakhgildian, President of the Advantech AMT Business Unit. "Coupled with our newly available modem interfaces options of Gigabit Ethernet router, OC-3 or STM-1, Advantech can provide large scale satellite users with the means to further reduce the cost of transporting their critical data, maximizing efficiency and saving money on their infrastructure."

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Press Release Contact Information:

Michael Di Paolo
Advantech AMT
Senior Director Data Networks
657 Orly Avenue
Montreal, Quebec
Canada H9P 1G1
Voice: (514) 420-0045
Fax: (514) 420-0073
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