{"id":37,"date":"2011-05-28T05:49:05","date_gmt":"2011-05-28T05:49:05","guid":{"rendered":"http:\/\/www.raymaps.com\/blog\/?p=37"},"modified":"2013-03-22T05:13:05","modified_gmt":"2013-03-22T05:13:05","slug":"simulating-a-siso-ring-model","status":"publish","type":"post","link":"https:\/\/www.raymaps.com\/index.php\/simulating-a-siso-ring-model\/","title":{"rendered":"Simulating a SISO Ring Model"},"content":{"rendered":"<p style=\"text-align: justify;\">A Ring Model is a well known spatial channel model. It models the propagation channel as an unobstructed transmitter and a receiver surrounded by a ring of reflectors. The distance between the transmitter and receiver is usually much larger than the radius of the ring. The reflectors\u00a0are distributed uniformly around the ring. This model is useful for modeling a scenario where a base station is located at sufficient altitude and is unobstructed whereas the mobile station is at ground level and is surrounded by a bunch of reflectors.<\/p>\n<div class=\"mceTemp mceIEcenter\" style=\"text-align: justify;\">\n<dl id=\"attachment_38\" class=\"wp-caption aligncenter\" style=\"width: 539px;\">\n<dt class=\"wp-caption-dt\"><a rel=\"attachment wp-att-38\" href=\"http:\/\/www.raymaps.com\/index.php\/simulating-a-siso-ring-model\/ringmodel0\/\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38\" title=\"Ring Model\" src=\"http:\/\/www.raymaps.com\/wp-content\/uploads\/2011\/05\/RingModel0.jpg\" alt=\"\" width=\"529\" height=\"377\" srcset=\"https:\/\/www.raymaps.com\/wp-content\/uploads\/2011\/05\/RingModel0.jpg 529w, https:\/\/www.raymaps.com\/wp-content\/uploads\/2011\/05\/RingModel0-300x213.jpg 300w\" sizes=\"auto, (max-width: 529px) 100vw, 529px\" \/><\/a><\/dt>\n<dd class=\"wp-caption-dd\">Ring Model<\/dd>\n<\/dl>\n<\/div>\n<p style=\"text-align: justify;\">Given below is the MATLAB code for a SISO Ring Model consisting of eight reflectors\u00a0distributed uniformly around the ring.<\/p>\n<pre lang=\"matlab\">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\r\nfunction [Et]=ring_mod0(d,r,B)\r\nEt=0;\r\nfor phi=0:pi\/4:(2*pi)-(pi\/4);\r\nR=sqrt((d-r*cos(phi))^2+(r*sin(phi))^2);\r\nE=exp(-i*B*(r+R))\/(r+R);\r\nEt=Et+E;\r\nend\r\nreturn\r\n%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>A Ring Model is a well known spatial channel model. It models the propagation channel as an unobstructed transmitter and a receiver surrounded by a ring of reflectors. The distance between the transmitter and receiver is usually much larger than the radius of the ring. The reflectors\u00a0are distributed uniformly around the ring. This model is useful for modeling a scenario where a base station is located at sufficient altitude and is unobstructed whereas the mobile station is at ground level and is surrounded by a bunch of reflectors. Ring Model Given below is the MATLAB code for a SISO Ring [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[41,40],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry","category-chanmod","tag-ring-model","tag-siso"],"_links":{"self":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/comments?post=37"}],"version-history":[{"count":15,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts\/37\/revisions"}],"predecessor-version":[{"id":1916,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts\/37\/revisions\/1916"}],"wp:attachment":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/media?parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/categories?post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/tags?post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}