{"id":38499,"date":"2019-12-04T16:30:17","date_gmt":"2019-12-04T14:30:17","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=38499"},"modified":"2019-12-05T17:05:57","modified_gmt":"2019-12-05T15:05:57","slug":"seminaire-low-power-high-speed-nonlinear-signal-processingfrom-iterative-algorithm-to-analog-electronic-circuits","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/actualites\/seminaire-low-power-high-speed-nonlinear-signal-processingfrom-iterative-algorithm-to-analog-electronic-circuits.html","title":{"rendered":"S\u00e9minaire : Low Power High Speed Nonlinear Signal Processing:From Iterative Algorithm to Analog Electronic Circuits"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_17g1nm27p0bte\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-38499'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-74f0be6d0d61ad929c93014b7005d25f\">\n#top .av-special-heading.av-av_heading-74f0be6d0d61ad929c93014b7005d25f{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-74f0be6d0d61ad929c93014b7005d25f .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-74f0be6d0d61ad929c93014b7005d25f .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-74f0be6d0d61ad929c93014b7005d25f av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >S\u00e9minaire :  Low Power High Speed Nonlinear Signal Processing:From Iterative Algorithm to Analog Electronic Circuits<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jr8xdc0k-5d9fce3856e0d3831eaebc0e92dfd7a1'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><\/h3>\n<blockquote>\n<p><strong><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-38502\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_.png\" alt=\"\" width=\"99\" height=\"99\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_.png 2000w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-300x300.png 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-1030x1030.png 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-80x80.png 80w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-768x768.png 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-1536x1536.png 1536w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-36x36.png 36w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-180x180.png 180w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-1500x1500.png 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/12\/Uni_Ulm_Logo_Ausschnitt.svg_-705x705.png 705w\" sizes=\"auto, (max-width: 99px) 100vw, 99px\" \/><\/a>05\/12\/2019<\/strong><br \/>\n14h00 \u2013 IRCICA,\u00a050 Avenue Halley, 59650 Villeneuve-d\u2019Ascq<\/p>\n<p><strong>Pr. Werner G. TEICH<\/strong><strong><br \/>\n<\/strong>Institute of Communications Engineering, Ulm University, Germany<\/p>\n<\/blockquote>\n<div id=\"gtx-trans\" style=\"position: absolute; left: 262px; top: 122.236px;\">\n<div class=\"gtx-trans-icon\"><\/div>\n<\/div>\n<\/div><\/section>\n<section  class='av_textblock_section av-jrc1e691-dac7fa2f015f2b8a2aa82bf056f56818'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Despite the tremendous progress made in digital signal processing during the last decades, the constraints imposed by high data rate wireless communications are becoming ever more stringent. The development of the wireless internet of things with a massive machine-to-machine communications raised the importance of power consumption for sophisticated algorithms, such as channel equalization or decoding. The strong link existing between computational speed and power consumption suggests an investigation of signal processing with energy efficiency as a prominent design choice. Therefore we revisit the topic of signal processing with analog circuits and its potential to increase the energy efficiency. Channel equalization is chosen as one application of nonlinear signal processing, and a vector equalizer based on a recurrent neural network (RNN) structure is taken as an example to demonstrate the potential of state of the art in very large scale integration (VLSI) design. We show for this example that it is possible to achieve an energy requirement of few pJ\/bit, an improvement of three to four orders of magnitude compared with the most energy efficient digital circuits. As a second example, we consider iterative decoding algorithm based on message passing. They can be represented by a generalized RNN structure. Again, this allows to derive an equivalent analog circuit. Compared to digital circuits, analog circuits allow to perform iterative decoding or equalization with increased computational speed, reduced chip area and power consumption.<\/p>\n<div class=\"moz-forward-container\"><\/div>\n<div class=\"moz-forward-container\"><b>Werner G. TEICH<\/b> graduated with a M.Sc. in Physics from Oregon State University, Corvallis, Oregon, in 1984. He received the Dipl.-Phys. and the Dr. rer. nat. degree in Physics from the University of Stuttgart in 1985 and 1989, respectively. In 1991 he joined the Department of Information Technology, Ulm University, Germany. Currently, he is Senior Lecturer in Digital Communications at the Institute of Communications Engineering, Ulm University. His research interests are in the general field of digital communications. Specific areas of interest include design and analysis of iterative methods in general, and the application of artificial neural networks for low power nonlinear signal processing with analog electronic circuits in particular.<\/div>\n<div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_hr-27dbca2fc452772c46f341203d303a56\">\n#top .hr.hr-invisible.av-av_hr-27dbca2fc452772c46f341203d303a56{\nheight:10px;\n}\n<\/style>\n<div  class='hr av-av_hr-27dbca2fc452772c46f341203d303a56 hr-invisible  avia-builder-el-5  el_before_av_button  avia-builder-el-first'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/div>\n<p><div  class='avia-button-wrap av-rpqvoq-6bf0c9678f5c138b596c4a804143f021-wrap avia-button-left  avia-builder-el-6  el_after_av_hr  avia-builder-el-last'><a href='mailto:laurent.clavier@univ-lille.fr'  class='avia-button av-rpqvoq-6bf0c9678f5c138b596c4a804143f021 av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"Contact : Laurent CLAVIER\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >Contact : Laurent CLAVIER<\/span><\/a><\/div><\/em><\/p>\n<p><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=LOADED&amp;custom1=www.iemn.fr&amp;custom2=\/wp-admin\/post.php&amp;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=BEFORE_OPTOUT_REQ&amp;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=FINISHED&amp;custom1=www.iemn.fr&amp;t=1548423287430\" \/><\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":38397,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-38499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/38499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=38499"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/38499\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/38397"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=38499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=38499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=38499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}