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DTSTAMP:20191122T171509Z
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DTSTART;TZID=US/Pacific:20191105T180000
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DESCRIPTION:Abstract: It’s been just over 50 years since A. J. Viterbi pu
 blished his famous algorithm for decoding convolutional codes. While the V
 iterbi Algorithm’s core\, best state or ACS\, is well known\, the need f
 or tracing back in a code trellis is less so. His paper highlighted the ro
 le of block length in exploiting the then state-of-art bounds on error pro
 bability\, and his novel method remains optimal in single-pass\, maximum l
 ikelihood decoding and several other problem areas. Trace back was IP secr
 etive in those early days. Yet it was the key to reaching the potential of
  both the codes and the algorithm. In honor of Viterbi’s many contributi
 ons\, this talk revisits the VA\, covering the insight of trace back as we
 ll\, in theory and implementation. No prior experience in trellises and th
 e VA is needed to appreciate this brief walk through a boom moment in digi
 tial communications that still reverberates today.\n\nSpeaker: Keith Kunm 
 (COMSOC M ’76) holds a BSEE from Arizona State University and MS from St
 anford University. He worked at LInkabit in the 1970s for two of the earli
 est practical coding experts\, Jerry Heller and Andy Viterbi\, mainly in s
 equential decoding\, troposcatter\, packet radio and LSI codecs\, and SSMA
 . He then worked a few years in CVTs for electric cars\, but it was way to
 o early. So he returned to digital communications for the next 35 years\, 
 lastly on US Navy’s Mobile User Objective System SATCOM. Chasing SBIRs f
 rom time to time\, these days\, as AI7SI\, he is working on amateur radio 
 SDR\, full circle back to his beginnings as a ham in 1964.\n\nCo-sponsored
  by: CH06281 - San Diego Section Chapter\, BT02\n\nAgenda: \n6:00-6:30 pm 
 networking\, snack\n\n6:30- 7:30 pm seminar with QA\n\ncost: free IEEE mem
 bers\, $5 non-IEEE members\n\n10401 Roselle St\, San Diego\, California\, 
 United States\,  92121
LOCATION:10401 Roselle St\, San Diego\, California\, United States\,  92121
ORGANIZER:zzhang@ieee.org
SEQUENCE:9
SUMMARY:Communication and BTS chapters: Revisiting the Viterbi Algorithm an
 d Its Early Secrets
URL;VALUE=URI:https://events.vtools.ieee.org/m/207402
X-ALT-DESC:Description: <br /><p>Abstract: It&rsquo\;s been just over 50 ye
 ars since A. J. Viterbi published his famous algorithm for decoding convol
 utional codes. While the Viterbi Algorithm&rsquo\;s core\, best state or A
 CS\, is well known\, the need for tracing back in a code trellis is less s
 o. His paper highlighted the role of block length in exploiting the then s
 tate-of-art bounds on error probability\, and his novel method remains opt
 imal in single-pass\, maximum likelihood decoding and several other proble
 m areas. Trace back was IP secretive in those early days. Yet it was the k
 ey to reaching the potential of both the codes and the algorithm. In honor
  of Viterbi&rsquo\;s many contributions\, this talk revisits the VA\, cove
 ring the insight of trace back as well\, in theory and implementation. No 
 prior experience in trellises and the VA is needed to appreciate this brie
 f walk through a boom moment in digitial communications that still reverbe
 rates today.</p>\n<p>&nbsp\;</p>\n<p>Speaker: Keith Kunm&nbsp\;(COMSOC M &
 rsquo\;76) holds a BSEE from Arizona State University and MS from Stanford
  University. He worked at LInkabit in the 1970s for two of the earliest pr
 actical coding experts\, Jerry Heller and Andy Viterbi\, mainly in sequent
 ial decoding\, troposcatter\, packet radio and LSI codecs\, and SSMA. He t
 hen worked a few years in CVTs for electric cars\, but it was way too earl
 y. So he returned to digital communications for the next 35 years\, lastly
  on US Navy&rsquo\;s Mobile User Objective System SATCOM. Chasing SBIRs fr
 om time to time\, these days\, as AI7SI\, he is working on amateur radio S
 DR\, full circle back to his beginnings as a ham in 1964.</p><br /><br />A
 genda: <br /><p>6:00-6:30 pm&nbsp\; networking\,&nbsp\; snack</p>\n<div>&n
 bsp\;</div>\n<div>6:30- 7:30 pm seminar with QA</div>\n<div>&nbsp\;</div>\
 n<div>cost:&nbsp\; free IEEE members\,&nbsp\; $5 non-IEEE members</div>
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