BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:iCalendar-Ruby
BEGIN:VEVENT
CATEGORIES:Lectures & Presentations
DESCRIPTION:Ohio University graduate student chapter of the American Mathem
atical Society lecture\, March 23\n\nThe Ohio University graduate student c
hapter of the American Mathematical Society lecture features Henry Chimal-D
zul discussing Quasi-Cyclic Low-Density Parity Check Codes of girth g>6 on
March 23 from 4-5 p.m. in Morton 115. \n\n \n\nChimal-Dzul is a visiting pr
ofessor at the University of Notre Dame.\n\n \n\nAbstract: Quasi-Cyclic Lo
w Density Parity Check (QC-LDPC) codes are one of the most promising classe
s of LDPC codes. Due to their quasi-cyclic structure and low-density\, they
have been adopted in various standard broadband networks and storage syste
ms. One of the most interesting problems concerning this family of codes is
to investigate conditions so that they have large girth\, a parameter know
n to affect the efficiency of their decoding algorithm\, namely the Bit Fli
pping Algorithm. The girth of a QC-LDPC code depends at the same time on an
other parameter known as "lifting degree"\, which determines the length of
the code. In this talk\, we investigate conditions for a QC-LDPC code to ha
ve girth at least 6. The minimum lifting degree is also investigated and fu
lly determined in various cases. The results are obtained through linear a
lgebra techniques\, but the constructions translate into problems in Graph
theory\, number theory and combinatorics.\n\n \n\nParticipants can be in-pe
rson at Morton or join us online via the Teams link is below.\n\n https://t
eams.microsoft.com/l/meetup-join/19%3ameeting_Y2EwNDZkYzgtMDFmZS00MDk3LTgzM
zAtOWJiMTQ3MjI5OGY0%40thread.v2/0?context=%7b%22Tid%22%3a%22f3308007-477c-4
a70-8889-34611817c55a%22%2c%22Oid%22%3a%220b70ee14-d619-4fd4-aedd-d804aa59c
91d%22%7d
DTEND:20230323T210000Z
DTSTAMP:20231001T054355Z
DTSTART:20230323T200000Z
GEO:39.324149;-82.097337
LOCATION:Morton Hall\, 115
SEQUENCE:0
SUMMARY:Ohio University graduate student chapter of the American Mathematic
al Society lecture\, March 23
UID:tag:localist.com\,2008:EventInstance_42701908480178
URL:https://calendar.ohio.edu/event/ohio_university_graduate_student_chapte
r_of_the_american_mathematical_society_lecture_march_23
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