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*      RADIO-L :  a discussion of Digital Audio Broadcasting (DAB)    *
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Date: 07 October 1998
From: walter.tuttlebee@ROKE.CO.UK
Subject: RE:  Software Radio Implementation

In a recent posting, Hendrik Prins, Technical Consultant, Federation
of Australian Radio Broadcasters, suggested opening up discussion of
software radio as it relates, to DAB....so here goes.

Many Radio-L participants will be aware of Roke Manor Research's DAB
activities - notably our Gold Pack receiver development kit (launched
at IFA 97) and the GoldCard credit-card-sized DAB receiver OEM module
(launched at CeBIT 98), see
http://www.roke.co.uk/products/prodhome.html

Most however are probably unaware of our activities in software radio,
where we are a leading European player, as well as members of the
global MMITS (Software Defined Radio) Forum. We will be presenting
the opening keynote paper "Software Radio: What, Why and When ?" at
IBC's Software Defined Radio Conference in London on 22nd October
1998. Other recent invited presentations include the IEEE ISSSTA
Conference in South Africa in September and the 1st International
Software Radio Conference in Rhodes in June. Watch out also for the
IEEE Communications Magazine special issue on the topic next February.

In bringing together these two themes of DAB and software radio, Roke
Manor Research is working together with Radioscape to offer an initial
product comprising a full ensemble DAB test / monitor receiver based
around a software radio demodulation implementation and our Gold
receiver technology.

Experience with our Gold Pack receiver was that some broadcasters
wanted to use it as a test receiver - however, the original product
demodulated only a 384 kb/s subset of the full multiplex. With the
software radio approach we can offer a full multiplex version. In
addition this implementation can support a wide range of significant
additional diagnostics. The processing requirements are compatible
with today's PCs; to take it down to a portable consumer radio
implementation - to address Hendrik Prins' interest - will take a
little longer, but not many years.

Further details - mailto:david.hawkins@roke.co.uk

Best regards,
Walter Tuttlebee
================================
Dr Walter HW Tuttlebee
Business Development Manager
Roke Manor Research
Romsey, UK

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