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Che-Hsi Lai

dblp:63/11153 · DBLP profile ↗
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1ranked-venue papers
1as first author
0since 2021 · last 1997
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Computer networks · 1 · 1 first-author

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer networks
1 paper
Physical-layer communications · 100%

Topics — the 6 heaviest of 6, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Physical-layer communications
channel coding		 0.011997
Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals · IEEE Trans. Commun. 1997
Physical-layer communications › optical communication
optical modulation		 0.011997
Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals · IEEE Trans. Commun. 1997
Physical-layer communications › modulation
pulse position modulation		 0.011997
Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals · IEEE Trans. Commun. 1997
Physical-layer communications
synchronization		 0.011997
Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals · IEEE Trans. Commun. 1997
Physical-layer communications › synchronization
timing recovery		 0.011997
Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals · IEEE Trans. Commun. 1997
Physical-layer communications › channel coding › convolutional decoding
viterbi decoding		 0.011997
Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals · IEEE Trans. Commun. 1997

Methods — techniques the papers use, named apart from their topics

viterbi algorithm · 0.0upper bound analysis · 0.0
YearPublicationVenuePosition
1997 Modified Viterbi decoders for joint data detection and timing recovery of convolutionally encoded PPM and OPPM optical signals
abstract
Two novel Viterbi decoders, known as joint Viterbi decoder (JVD) and enhanced Viterbi decoder (EVD), for synchronization and data detection are introduced and analyzed for convolutionally-encoded (CE) optical pulse-position modulation (PPM) and overlapping PPM (OPPM) channels. For the JVD algorithm, a count metric is employed to perform the Viterbi decoding in the absence of synchronization. For the EVD algorithm, a memory array is utilized to reduce the computation time of the JVD algorithm. With the aid of a previously proposed upper-bound and taking advantage of the minimal asymptotic normalized timing error (MANTE) concept, approximate performance measures for the EVD and JVD receivers are obtained.
Che-Hsi Lai, Kamran Kiasaleh
 IEEE Trans. Commun.1