Agilent's
Digital Modem library eliminates the need for this effort.
OFDM systems with 52 non-zero 64QAM -modulated carriers [1,2] produce time-domain signals with a crest factor of 19, which would lead to very inefficient implementations in terms of wordlength in the
digital modem and data converters, and of dynamic range in the analog front-end.
The satellite portion is equipped with a
digital modem to transmit e-mail.
Motorola's new
digital modem, code-named BitSURFR, will sell in the low $400s, according to Berryhill.
Comtech Systems was selected for this project due to its reliable innovative system designs, its long history as a world leader in troposcatter equipment and systems, and its high data rate, field proven troposcatter
digital modem technology.
It will use Comtech Systems' adaptive
digital modem, troposcatter radio system and high power amplifiers, as well as antennas.
The supanet broadband Internet access kit includes a
digital modem, sign-up CD, cables and instruction manual.
-- Cable modems helped contribute to a strong quarter overall in the
digital modem arena.
Cahners In-Stat Group's analog and
digital modem quarterly service reveals that, while many vendors introduce products, actual shipment information shows only an elite group of vendors shipping in volume.
Comtech Systems will be supplying its adaptive
digital modem, troposcatter radio system and high power amplifiers, as well as antennas.