Rockwell Collins Introduces Bandwidth Efficient Advanced Modulation; New technology brings bandwidth efficiency of satellite communications to a new level

CEDAR RAPIDS, Iowa (July 17, 2002) - Rockwell Collins (NYSE:COL), a global leader in aviation electronics and communications, in a joint effort with the Office of Naval Research (ONR) and the Naval Air Systems Command (NAVAIR), has developed a new waveform technology called Bandwidth Efficient Advanced Modulation (BEAM). BEAM enables the transfer of information at data rates not previously achieved over ultra-high frequency (UHF) satellite communications (SATCOM) channels.

BEAM provides a data rate of up to 80 kb/s over a standard 25 kHz UHF SATCOM channel. This capability is within three decibels (dB) of Shannon's limit, a theoretical data rate limit for constant envelope signaling, and surpasses conventional UHF SATCOM systems that until now have had limited data rates to 16 kb/s. Prior to BEAM, the highest data rates demonstrated over such channels without BEAM have been 56 kb/s, requiring greater than three times more signal power than BEAM for the same data rate.

Rockwell Collins has achieved several technological milestones for the BEAM system, including:

• Has begun integration of BEAM technology into Rockwell Collins avionics.
• Developed a candidate specification standard (MIL-STD-188-181C) for a BEAM waveform that achieves 80 kb/s data rates in a 25-kHz SATCOM channel.
• Developed and demonstrated a prototype BEAM modem that implements the specification.
• Received ONR UHF SATCOM contract extension to develop and demonstrate BEAM Line-of-Sight (LOS) applications at data rates up to 100 kb/s within a 25 KHz channel.

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