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Tweaks to accommodate overcite citation style.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6448 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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@ -173,8 +173,8 @@ d for the first callsign.
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It should be obvious that the JT65 protocol is intended for the basic purpose
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of completing legitimate, documented two-way contacts, but not for extended
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conversations.
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Full details of the message structure and encoding procedure are presented
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in reference
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Full details of the message structure and encoding procedure were presented
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in an earlier publication
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\begin_inset CommandInset citation
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LatexCommand cite
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key "jt65_protocol"
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@ -676,7 +676,6 @@ probabilistic
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decoding methods
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\begin_inset CommandInset citation
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LatexCommand cite
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after "Chapter 10"
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key "lc2004"
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\end_inset
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@ -1162,7 +1161,7 @@ JT65 Message Processing
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\end_inset
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of the symbol's fractional power
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\begin_inset Formula $p_{1,\,j}$
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\begin_inset Formula $p_{1,\, j}$
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\end_inset
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in a sorted list of
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@ -1258,7 +1257,7 @@ description "The soft distance between a received word and a codeword is a measu
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between the received word and the codeword:
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\begin_inset Formula
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\begin{equation}
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d_{s}=\sum_{j=1}^{n}\alpha_{j}\,(1+p_{1,\,j}).\label{eq:soft_distance}
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d_{s}=\sum_{j=1}^{n}\alpha_{j}\,(1+p_{1,\, j}).\label{eq:soft_distance}
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\end{equation}
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\end_inset
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@ -1276,7 +1275,7 @@ Here
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\end_inset
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if the received symbol and codeword symbol are different, and
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\begin_inset Formula $p_{1,\,j}$
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\begin_inset Formula $p_{1,\, j}$
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\end_inset
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is the fractional power associated with received symbol
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@ -1320,7 +1319,7 @@ In practice we find that
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\begin_layout Standard
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\begin_inset Formula
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\begin{equation}
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u=\frac{1}{n}\sum_{j=1}^{n}S(c_{j},\,j).\label{eq:u-metric}
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u=\frac{1}{n}\sum_{j=1}^{n}S(c_{j},\, j).\label{eq:u-metric}
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\end{equation}
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\end_inset
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@ -1353,7 +1352,7 @@ The correct JT65 codeword produces a value for
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bins containing noise only.
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Thus, if the spectral array
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\begin_inset Formula $S(i,\,j)$
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\begin_inset Formula $S(i,\, j)$
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\end_inset
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has been normalized so that the average value of the noise-only bins is
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@ -1608,7 +1607,7 @@ For each received symbol, define the erasure probability as 1.3 times the
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a priori
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\emph default
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symbol-error probability determined from soft-symbol information
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\begin_inset Formula $\{p_{1}\textrm{-rank},\,p_{2}/p_{1}\}$
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\begin_inset Formula $\{p_{1}\textrm{-rank},\, p_{2}/p_{1}\}$
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\end_inset
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.
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@ -1736,32 +1735,56 @@ An acceptable codeword has been found.
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\end_layout
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\begin_layout Standard
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Inspiration for the FT decoding algorithm came from a number of sources,
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particularly references
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\begin_inset CommandInset citation
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LatexCommand cite
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key "lhmg2010"
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\end_inset
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and
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\begin_inset CommandInset citation
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LatexCommand cite
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key "lk2008"
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\end_inset
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and the textbook by Lin and Costello
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Inspiration for the FT decoding algorithm came from a number of sources.
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\begin_inset CommandInset citation
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LatexCommand cite
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key "lc2004"
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\end_inset
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.
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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textsuperscript{,}
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\end_layout
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\end_inset
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\begin_inset CommandInset citation
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LatexCommand cite
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key "lhmg2010"
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\end_inset
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\begin_inset ERT
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status open
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\begin_layout Plain Layout
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\backslash
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textsuperscript{,}
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\end_layout
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\end_inset
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\begin_inset CommandInset citation
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LatexCommand cite
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key "lk2008"
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\end_inset
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After developing this algorithm, we became aware that our approach is conceptua
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lly similar to the stochastic, erasures-only list decoding algorithm described
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in reference
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lly similar to a stochastic, erasures-only list decoding algorithm described
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in another reference
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\begin_inset CommandInset citation
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LatexCommand cite
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key "ls2009"
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@ -1769,15 +1792,8 @@ key "ls2009"
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\end_inset
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.
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The algorithm in
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\begin_inset CommandInset citation
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LatexCommand cite
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key "ls2009"
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\end_inset
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is applied to higher-rate Reed-Solomon codes on a symmetric channel using
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binary phase-shift keying (BPSK).
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That algorithm is applied to higher-rate Reed-Solomon codes on a symmetric
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channel using binary phase-shift keying (BPSK).
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Our 64-ary input channel with 64-FSK modulation required us to develop
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unique methods for assigning erasure probabilities and for defining acceptance
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criteria to select the best codeword from the list of tested candidates.
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@ -2790,8 +2806,8 @@ Acknowledgments
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\end_layout
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\begin_layout Standard
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We thank G3WDG, G4WJS, PY2SDR, SM5BSZ, VK7MO, W3SZ, and Casey Smith for
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helpful comments on an earlier version of this paper.
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We thank G3WDG, G4WJS, KD9DSW, PY2SDR, SM5BSZ, VK7MO, and W3SZ for helpful
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comments on an earlier version of this paper.
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\end_layout
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\begin_layout Standard
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