General notes:
Copies of the papers presented at, or published for DCC are available in various ways. A paper printed in the proceedings will be available for purchase in most cases in hard copy as the DCC proceedings. It will in most cases also be available as an individual paper in PDF format as a free download via a link below the abstract (where available) It may also be available on CD-ROM. A paper printed in the proceedings may not have been presented at the conference. Also a presentation at DCC may not be in the printed proceedings. In those cases it may be available on DVD, CD-ROM or as a MP3 download. Links to what is available will be on the page specific to the particular year's DCC.
- Location:
- Tucson, AZ
Read the conference story with audio and
photos.
Abstracts:
25th ARRL and TAPR Digital Communications Conference
September 15-17, 2006
- Janus - A Sound Card Designed for Software Defined
Radios
by Phil Harman VK6APH and Bill Tracey KD5TFD - Abstract:
The design, evolution and implementation of a sound card, Janus,
targeted to amateur radio Software
Defined Radio applications is discussed. The evaluation of a number of
A/D converters considered for
the design is also discussed. The Janus board is a high quality A/D and
D/A converter board designed
to work with amateur radio SDR applications. The card supports 24 bit
sampling at 48, 96, and 192 khz
sampling rates with performance exceeding consumer sound cards currently
available on the market.
The Janus board is designed to work with the HPSDR.org Atlas backplane
and Ozymandias controller
card.
- Providing Communications for a Worldwide Special
Interest Ham Group
by Don L. Jackson AE5K - Abstract:
This paper describes the forming of a special interest digital
communication group, the need for worldwide
intercommunication on a timely basis, and the evolution of a mix of
communication channels utilizing the
Internet. This ability to communicate rapidly has been one of the
reasons for the explosive growth of the
HPSDR group, the rapid design of several projects, and the synergy found
with the association of many
interested hams, well known experts, TAPR and AMSAT.
- The High Performance Software Defined Radio
Project
by Lyle Johnson KK7P - Abstract:
An open project to advance the state of Software Defined Radio within
Amateur radio is described.
- The Sound Card Programming? ...But it is Easy!
by Patrick Lindecker F6CTE - Abstract:
In this paper, I present a DLL ( a program able to be loaded and used by
other programs) allowing to
consider the sound card as a "black box". This could interest the ones
for which the Windows API
programming is a problem and who would wish to use the sound card for
experimentation, as, for
example, decoding AF receivers.
The only need is that the DLL and the program be in the same directory.
- Notes From the Eagle Digital Payload Design
Meeting, San Diego, CA 29-30
June 2006
by Bob McGwier N4HY and Jim Sanford WB4GCS - Abstract:
AMSAT leadership and digital experts convened at Qualcomm headquarters
in San
Diego in late June to hammer out details of the digital payload and the
resulting changes
to other Eagle features.
- WiMax/802.16 Overview
by Dr. Ronnie P. Milione W2TAP - Abstract:
This abstract is an overview of the upcoming IEEE 802.16 specifications
submitted to the
ARRL Digital Communications Conference for 2006.The IEEE 802.16 family
of standards,
and its associated industry consortium WiMax, promises to deliver high
data rates over
large areas to a large number of users in the near future. This exciting
addition to current
broadband options such as DSL, cable, and Wi-Fi promises to rapidly
provide broadband
access to locations in the world.s rural and developing areas where
broadband is currently
unavailable, as well as competing for urban market share. WiMax.s
competitiveness in the
marketplace largely depends on the actual data rates and ranges that are
achieved, but
this has been difficult to judge due to the large number of possible
options and competing
marketing claims. This paper first provides a tutorial overview of
802.16. Then, based on
extensive recent studies, this paper presents the realistic attainable
throughput and
performance of expected WiMax compatible systems based on the 802.16d
standard
approved in June 2004 (now named 802.16-2004). I also suggested future
enhancements
to the standard that could at least quadruple the achievable data rate,
while also
increasing the robustness and coverage, with only moderate complexity
increases.
- uSmartDigi™: An APRS Digitpeater and D-Gate
D-STAR Gateway
by Rich Painter, AB0VO - Painter Engineering, Inc. - Abstract:
The uSmartDigi is an expansion board for the TNC-X KISS-mode Terminal
Node Controller that
provides significant computing resources for various digital
communications applications. The
uSmartDigi eliminates the dedicated PC and laptop computers commonly
used in amateur radio
applications. The first two applications, the uSmartDigi APRS Digipeater
and D-Gate D-STAR
Gateway are described in this paper.
- Space Gate Concepts
by Dr. Michael Parker KT7D - Rincon Research Corp. - Abstract:
The Rincon Research FPGA-based system that was to be used for collecting
and processing data from the recent ill-fated CubeSat launch is
described. Logistics
permitting, a demonstration is planned. Issues and alternative concepts
are discussed.
Potential applications of software radios interfaced to the web with
precision timetagging
and frequency stability are discussed.
- ANDE AX.25 Satellite Network
by Bob Bruninga, WB4APR - US Naval Academy Satellite Lab - Abstract:
ANDE is a follow-on digital communications payload to the highly
successful PCSAT-1 [1] that was
launched on 30 Sept 2001 and PCSAT2 that was launched on 26 July 2005
and recovered from the
international Space Station on 2 July 2006. These satellites all use
off-the-shelf standard AX.25 Packet
TNC.s for command, control and telemetry which greatly simplifies
student payload design. ANDE,
along with its companions of RAFT and MARScom are currently at Kennedy
Space Center for integration
with mission STS-116 currently planned for launch about mid December
2006.
These student built Amateur Satellite missions have taken advantages of
synergisms in the Amateur
Satelite Service, Student Education and experience, and science sponsors
while operating within the rules
of the Amateur Satellite Service[2]. MARScom is an experimental
communications satellite for the Navy
and Marine Corps Military Affiliate Radio System which is also operated
by radio amateurs volunteers in
that organization. All depend on the global network of Amateur Satellite
Ground stations for recovering
their downlink data and making it available to students worldwide.
