{"id":15570,"date":"2026-07-30T09:59:49","date_gmt":"2026-07-30T00:59:49","guid":{"rendered":"https:\/\/www.ieice.org\/cs\/ap\/?page_id=15570"},"modified":"2026-07-30T10:13:50","modified_gmt":"2026-07-30T01:13:50","slug":"prop_db_9","status":"publish","type":"page","link":"https:\/\/www.ieice.org\/cs\/ap\/language\/en\/misc-eng\/denpan-db\/prop_db\/prop_db_9\/","title":{"rendered":"9. FDTD analysis data in Kokura urban area"},"content":{"rendered":"\n<h3 class=\"wp-block-heading is-style-vk-heading-default\">Database<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>No.<\/td><td>Contents<\/td><td>Data type<\/td><td>Location<\/td><td>Date of registration<\/td><td>Registrant<\/td><\/tr><tr><td>9<\/td><td>Electric field strength<br>Received power<\/td><td>FDTD<\/td><td>Kokurakita-ku, Kitakyushu-shi, Fukuoka<br>(same area as No.1)<\/td><td>Jul. 30th,<br>2026<\/td><td>T. Hikage<br>(Hokkaido Univ.)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Parameters<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>Parameter<\/td><td>Value<\/td><\/tr><tr><td>Analysis space<\/td><td>38,000 \u00d7 35,000 \u00d7 1,400 (cells)<\/td><\/tr><tr><td>Cell size<\/td><td>20 mm \u00d7 20 mm \u00d7 20 mm<\/td><\/tr><tr><td>Iterations<\/td><td>5,730<\/td><\/tr><tr><td>Frequency<\/td><td>1298 MHz<\/td><\/tr><tr><td>Tx and Rx antenna<\/td><td>Dipole, Vertical pol.<\/td><\/tr><tr><td>Transmit power<\/td><td>0.0969 W (Electric field strength),<br>39.5 dBm (Received power)<\/td><\/tr><tr><td>Tx antenna height<\/td><td>12.5 m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Measurement environment<\/h3>\n\n\n\n<ul class=\"wp-block-list vk_block-margin-0--margin-bottom\">\n<li style=\"line-height:2\">A numerical model was constructed based on the building data and base-station (Tx) configuration of Database No. 1.<\/li>\n\n\n\n<li>The evaluation frequency and transmitting antenna (Tx) configuration are the same as those in Database No. 1 (Urban propagation loss, Kokura, Fukuoka, 1298 MHz).<\/li>\n\n\n\n<li class=\"vk_block-margin-0--margin-bottom\" style=\"line-height:2\">Considering the computational resources required for FDTD analysis, FDTD simulations were performed for a region of approximately 700 m \u00d7 700 m horizontally and 28 m in height.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns vk_block-margin-0--margin-top is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column vk_block-margin-0--margin-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<ul class=\"wp-block-list\">\n<li style=\"line-height:2\">The simulations were conducted using a special service of the Hokkaido University Information Initiative Center that allowed the use of many nodes (400 nodes, up to 180 hours of computation time).<\/li>\n\n\n\n<li>The electric field strength distribution was evaluated.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><div class=\"wp-block-image vk_block-margin-0--margin-top vk_block-margin-0--margin-bottom\">\n<figure class=\"aligncenter size-medium is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"276\" height=\"300\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/image-276x300.png\" alt=\"\" class=\"wp-image-15413\" style=\"width:158px;height:auto\" srcset=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/image-276x300.png 276w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/image.png 372w\" sizes=\"auto, (max-width: 276px) 100vw, 276px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1395\" height=\"825\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/Analysis_parameters-1.png\" alt=\"\" class=\"wp-image-15577\" style=\"width:638px;height:auto\" srcset=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/Analysis_parameters-1.png 1395w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/Analysis_parameters-1-300x177.png 300w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/Analysis_parameters-1-1024x606.png 1024w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/Analysis_parameters-1-768x454.png 768w\" sizes=\"auto, (max-width: 1395px) 100vw, 1395px\" \/><\/figure><\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"987\" height=\"703\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/FDTD_3Dmodel-1.png\" alt=\"\" class=\"wp-image-15580\" style=\"width:507px;height:auto\" srcset=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/FDTD_3Dmodel-1.png 987w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/FDTD_3Dmodel-1-300x214.png 300w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/FDTD_3Dmodel-1-768x547.png 768w\" sizes=\"auto, (max-width: 987px) 100vw, 987px\" \/><\/figure><\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center vk_block-margin-0--margin-bottom\"><span data-fontsize=\"12px\" style=\"font-size: 12px;\" class=\"vk_inline-font-size\">Evaluation-plane height: <\/span><span data-fontsize=\"12px\" style=\"font-size: 12px;\" class=\"vk_inline-font-size\">0.6 m<\/span><\/p>\n\n\n<div class=\"wp-block-image vk_block-margin-0--margin-top\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2041\" height=\"1454\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/rss006_1.gif\" alt=\"\" class=\"wp-image-15451\" style=\"width:184px;height:auto\"\/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center vk_block-margin-0--margin-bottom\"><span data-fontsize=\"12px\" style=\"font-size: 12px;\" class=\"vk_inline-font-size\">Evaluation-plane height: 1.6 m<\/span><\/p>\n\n\n<div class=\"wp-block-image vk_block-margin-0--margin-top\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2052\" height=\"1456\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/rss016_1.gif\" alt=\"\" class=\"wp-image-15452\" style=\"width:183px;height:auto\"\/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center vk_block-margin-0--margin-bottom\"><span data-fontsize=\"12px\" style=\"font-size: 12px;\" class=\"vk_inline-font-size\">Evaluation-plane height: 12.6 m<\/span><\/p>\n\n\n<div class=\"wp-block-image vk_block-margin-0--margin-top vk_block-margin-0--margin-bottom\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2312\" height=\"1596\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2026\/06\/rss126_1.gif\" alt=\"\" class=\"wp-image-15453\" style=\"width:169px;height:auto\"\/><\/figure><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Condition of data use<\/h3>\n\n\n\n<p>Cite the following paper.<\/p>\n\n\n\n<p><a href=\"https:\/\/ken.ieice.org\/ken\/paper\/20200715h1ZH\/eng\/\">T. Hikage, A. Yoshie, and M. Omiya, \u201cThree-Dimensional Analysis of Propagation Characteristics in an Urban Environment Using Large-scaled FDTD simulation,\u201d IEICE Tech. Rep., vol. 120, no. 97, AP2020-9, pp. 1&#8211;4, July 2020. (in Japanese)<\/a><\/p>\n\n\n\n<a href=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/?page_id=15587\" class=\"su-button su-button-style-default\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:6px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 18px;font-size:14px;line-height:28px;border-color:#6cadf4;border-radius:6px;text-shadow:none\"> Click hear to access data<\/span><\/a>\n\n\n\n<p>(To access data, you need passcode. Please contact to the committee secretary. The contact mail address is shown in <a href=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/language\/en\/misc-eng\/denpan-db\/\">the top-page of the database<\/a>.)  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Database No. Contents Data type Location Date of registration Registrant 9 Electric field strengthReceived pow [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":15718,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-15570","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/15570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/comments?post=15570"}],"version-history":[{"count":15,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/15570\/revisions"}],"predecessor-version":[{"id":15924,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/15570\/revisions\/15924"}],"up":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/15718"}],"wp:attachment":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/media?parent=15570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}