Add ref to the 2005 paper on JT65, and a paragraph of advice to readers

at the end of Section 1.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6397 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2016-01-13 15:27:58 +00:00
parent c46ba3a1e4
commit 8909ea5637

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@ -9,9 +9,9 @@
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@ -107,7 +107,14 @@ moonbounce
\begin_inset Quotes erd
\end_inset
) communication, where the scattered return signals are always weak.
) communication
\begin_inset CommandInset citation
LatexCommand cite
key "jt65_protocol"
\end_inset
, where the scattered return signals are always weak.
It was soon found that JT65 also enables worldwide communication on the
HF bands with low power, modest antennas, and efficient spectral usage.
At least several thousand amateurs now use JT65 on a regular basis, making
@ -174,6 +181,54 @@ The JT65 protocol specifies transmissions that normally start one second
through parallelization on high-performance computers.
\end_layout
\begin_layout Standard
The remainder of this paper is organized as follows.
Section 2 presents a brief overview of the nature of Reed Solomon codes
and their error-correcting capabilities.
Section 3 provides statistical motivation for the FT algorithm, and Section
4 describes the algorithm in full detail.
(Material in these two sections is important because it documents our approach
and underlines its fundamental technical contributions.
It is heavier in formal mathematics than common in these pages, however;
some readers may choose to skim or skip these sections and proceed to the
results more quickly.
Many readers will benefit by reviewing the original paper on the JT65 protocol
\begin_inset CommandInset citation
LatexCommand cite
key "jt65_protocol"
\end_inset
.) A procedure for
\begin_inset Quotes eld
\end_inset
hinted decoding
\begin_inset Quotes erd
\end_inset
--- determining which one, if any, of a list of likely messages matches
the one that was received --- is outlined in Section 5.
Finally, in Section 6 we present performance measurements of the FT algorithm
and make explicit comparisons to the BM and KV decoders familiar to users
of programs
\emph on
WSJT
\emph default
,
\emph on
MAP65
\emph default
and
\emph on
WSJT-X
\emph default
.
Section 7 summarizes some early on-the-air experiences with the new decoder.
\end_layout
\begin_layout Section
\begin_inset CommandInset label
LatexCommand label
@ -2446,6 +2501,23 @@ Acknowledgments
\begin_inset CommandInset bibitem
LatexCommand bibitem
label "1"
key "jt65_protocol"
\end_inset
“The JT65 Communications Protocol”, J.
Taylor, K1JT,
\emph on
QEX
\emph default
, September-October 2005.
Available also at http://physics.princeton.edu/pulsar/K1JT/JT65.pdf.
\end_layout
\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
label "2"
key "kv2001"
\end_inset
@ -2464,7 +2536,7 @@ IEEE Transactions on Information Theory
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label "2"
label "3"
key "wsjt"
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@ -2479,7 +2551,7 @@ WSJT Home Page
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LatexCommand bibitem
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label "4"
key "lc2004"
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@ -2495,7 +2567,7 @@ Error Control Coding, 2nd Edition
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LatexCommand bibitem
label "4"
label "5"
key "lhmg2010"
\end_inset
@ -2514,7 +2586,7 @@ IEEE Communications Letters
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LatexCommand bibitem
label "5"
label "6"
key "lk2008"
\end_inset
@ -2539,7 +2611,7 @@ GLOBECOM
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\begin_inset CommandInset bibitem
LatexCommand bibitem
label "6"
label "7"
key "ls2009"
\end_inset
@ -2565,7 +2637,7 @@ IEEE Signal Processing Letters,
\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
label "7"
label "8"
key "wsjt_sourceforge"
\end_inset
@ -2581,7 +2653,7 @@ e.net/projects/wsjt/
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LatexCommand bibitem
label "8"
label "9"
key "karn"
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