{"id":55025,"date":"2022-09-01T10:51:36","date_gmt":"2022-09-01T02:51:36","guid":{"rendered":"https:\/\/ocw.nycu.edu.tw\/?post_type=speech_page&#038;p=55025"},"modified":"2025-07-03T10:08:53","modified_gmt":"2025-07-03T02:08:53","slug":"capacity-approaching-low-density-parity-check-codes-recent-developments-and-applications","status":"publish","type":"speech_page","link":"https:\/\/ocw.nycu.edu.tw\/?speech_page=all-speech-en\/academic-lecture-en\/capacity-approaching-low-density-parity-check-codes-recent-developments-and-applications","title":{"rendered":"Capacity-Approaching Low-Density Parity-Check Codes: Recent Developments and Applications"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"55025\" class=\"elementor elementor-55025\">\n\t\t\t\t\t\t\t\t\t<section class=\"penci-section penci-disSticky penci-structure-10 elementor-section elementor-top-section elementor-element elementor-element-6ebea07a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ebea07a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"penci-ercol-100 penci-ercol-order-1 penci-sticky-ct    elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-42ae9f3f\" data-id=\"42ae9f3f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-29f4dfb8 elementor-widget elementor-widget-breadcrumbs\" data-id=\"29f4dfb8\" data-element_type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<link rel=\"stylesheet\" href=\"https:\/\/ocw.nycu.edu.tw\/wp-content\/plugins\/elementor-pro\/assets\/css\/widget-theme-elements.min.css\"><p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/ocw.nycu.edu.tw\/\">Homepage<\/a><\/span><\/span><\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"penci-section penci-disSticky penci-structure-20 elementor-section elementor-top-section elementor-element elementor-element-575a62d0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"575a62d0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"penci-ercol-50 penci-ercol-order-1 penci-sticky-ct    elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-329933ac\" data-id=\"329933ac\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-224bdd2b elementor-widget elementor-widget-penci-info-box\" data-id=\"224bdd2b\" data-element_type=\"widget\" data-widget_type=\"penci-info-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"penci_info_box_88625\" class=\"penci-block-vc penci-info-box penci-ibox-float-left penci-view-default penci-shape-circle\">\r\n\t\t\t<div class=\"penci-ibox-inner\">\r\n\t\t\t\t\t\t\t\t<div class=\"penci-ibox-icon penci-ibox-icon--icon penci-icon penci-tibox-text\"><span class=\"penci-ibox-icon-fa\"><\/span><\/div>\t\t\t\t<div class=\"penci-ibox-content-wrap\">\r\n\t\t\t\t\t\t\t\t\t\t<h3 class=\"penci-ibox-title\">Capacity-Approaching Low-Density Parity-Check Codes: Recent Developments and Applications<\/h3>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33ff2f17 elementor-widget elementor-widget-video\" data-id=\"33ff2f17\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=7oFgtH9hICc&quot;,&quot;lazy_load&quot;:&quot;yes&quot;,&quot;modestbranding&quot;:&quot;yes&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.13.3 - 28-05-2023 *\/\n.elementor-widget-video .elementor-widget-container{overflow:hidden;transform:translateZ(0)}.elementor-widget-video .elementor-wrapper{aspect-ratio:var(--video-aspect-ratio)}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{height:100%;width:100%;display:flex;border:none;background-color:#000}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-wrapper{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .elementor-open-inline .elementor-custom-embed-image-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:50%}.elementor-widget-video .elementor-custom-embed-image-overlay{cursor:pointer;text-align:center}.elementor-widget-video .elementor-custom-embed-image-overlay:hover .elementor-custom-embed-play i{opacity:1}.elementor-widget-video .elementor-custom-embed-image-overlay img{display:block;width:100%}.elementor-widget-video .e-hosted-video .elementor-video{-o-object-fit:cover;object-fit:cover}.e-con-inner>.elementor-widget-video,.e-con>.elementor-widget-video{width:var(--container-widget-width);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"penci-section penci-disSticky penci-structure-10 elementor-section elementor-inner-section elementor-element elementor-element-122e3669 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"122e3669\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"penci-ercol-100 penci-ercol-order-1 penci-sticky-ct    elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-315b77cf\" data-id=\"315b77cf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2395f51 elementor-widget elementor-widget-text-editor\" data-id=\"2395f51\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.13.3 - 28-05-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<table border=\"1\" width=\"98%\" cellpadding=\"1\">\n<tbody>\n<tr>\n<th style=\"text-align: center;\" scope=\"row\" bgcolor=\"#FFF3DB\" width=\"103\">Speech Topic<\/th>\n<td bgcolor=\"#EEEEEE\" width=\"501\"><span style=\"color: #000000;\">\u00a0 Capacity-Approaching Low-Density Parity-Check Codes: Recent Developments and Applications<\/span><\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: center;\" scope=\"row\" bgcolor=\"#FFF3DB\">Date<\/th>\n<td>\u00a0 <span style=\"color: #000000;\">2013-05-14<\/span><\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: center;\" scope=\"row\" bgcolor=\"#FFF3DB\">Speech Instructor<\/th>\n<td bgcolor=\"#EEEEEE\"><span style=\"color: #000000;\">\u00a0 \u4ea4\u5927\u69ae\u8b7d\u6559\u6388-\u6797\u8212\u535a\u58eb<\/span><\/td>\n<\/tr>\n<tr>\n<th style=\"text-align: center;\" scope=\"row\" bgcolor=\"#FFF3DB\">Presentation<\/th>\n<td>\u00a0<span style=\"color: #000000;\"> The ever-growing needs for cheaper, faster, and more reliable communication and data storage systems have forced many researchers to seek means to attain the ultimate limits on reliable information transmission and data storage. Low-density parity-check (LDPC) codes are currently the most promising coding technique to achieve the Shannon capacities (or limits) for a wide range of channels. LDPC codes were first discovered by Gallager in 1962 and then rediscovered in late 1990\u2019s. Since their rediscovery, a great body of literature has emerged covering various aspects of these remarkable codes. Many of these codes have found their way in practical communications and their use in storage systems, such as hard disk drives and flash memories, seems to be This presentation gives an overview of recent developments of LDPC codes including code designs and constructions, encoding, decoding algorithms and applications in communication and data storage systems.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-427515b2 elementor-widget elementor-widget-penci-button\" data-id=\"427515b2\" data-element_type=\"widget\" data-widget_type=\"penci-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"pcbtn-wrapper pcbtn-align-left\">\r\n\t\t\t<a class=\"pcbtn pcbtn-icon-left elementor-animation-grow\" href=\"\/?speech_page=all-speech-en%2Facademic-lecture-en\">\r\n\t\t\t\t<span class=\"pcbtn-wrapperin\">\r\n\t\t\t\t\t<span class=\"pcbtn-content\"><svg 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