{"id":1275,"date":"2017-11-22T21:05:25","date_gmt":"2017-11-23T05:05:25","guid":{"rendered":"https:\/\/depts.washington.edu\/funlab\/?page_id=1275"},"modified":"2023-03-20T21:52:04","modified_gmt":"2023-03-21T04:52:04","slug":"cityscape-project-spectrum-plots","status":"publish","type":"page","link":"https:\/\/wp.ece.uw.edu\/funlab\/research\/archived-projects\/software-defined-wireless-networks\/cityscape-project-spectrum-plots\/","title":{"rendered":"CityScape Project &#8211; Spectrum Plots"},"content":{"rendered":"<p>Below are some sample p.s.d estimate data collected using Philadelphia CityScape stations.<\/p>\n<h1>LTE Band 17 Downlink (709MHz) Spectrogram<\/h1>\n<p>(*This data is collected by running custom scripts on the stations, not using the default CityScape collection software.)<\/p>\n<p><a href=\"https:\/\/depts.washington.edu\/funlab\/wp-content\/uploads\/2017\/11\/LTE_downlink_1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1279\" src=\"https:\/\/depts.washington.edu\/funlab\/wp-content\/uploads\/2017\/11\/LTE_downlink_1.png\" alt=\"\" width=\"660\" height=\"1096\" srcset=\"https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/LTE_downlink_1.png 660w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/LTE_downlink_1-181x300.png 181w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/LTE_downlink_1-617x1024.png 617w\" sizes=\"auto, (max-width: 660px) 100vw, 660px\" \/><\/a><\/p>\n<h2>Collection Time<\/h2>\n<ul>\n<li class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">2017-09-12 17:17 \u2013 18:17 (UTC) (1:17 \u2013 2:17pm EDT)<\/span><\/span><\/li>\n<\/ul>\n<h2>Data Structure<\/h2>\n<ul>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">703.96 \u2013 714.04 MHz, 180 kHz resolution PSD estimates; total 56 FFT points. Max-held (instead of time averaging).<br \/>\n<\/span><\/span><\/p>\n<ul>\n<li>The first &#8216;PSD bin&#8217; is from 703.96MHz to 704.14MHz, the second &#8216;PSD bin&#8217; is from 704.14MHz to 704.32MHz, and so on..<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Sensor configuration<\/h2>\n<ul>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Location: Graduate Research Wing Rooftop, 200 South 3rd street, Philadelphia, PA 19104, United States.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Hardware: USRP N200 + UBX40 daughterboard, connected to wideband discone antennas. Calibrated to provide dBm readings (roughly).<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Rx Amplifier Gain: 0dB <\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Antenna Port: TX\/RX (a wideband discone antenna attached).<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Sampling Rate (after decimation): 12.5MS\/s<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">(DSP-level) Intermediate Frequency: -12.5 MHz<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Noise figure: approx 25.5dB (relatively high, due to the maximum achievable gain without overloading the RF frontend).<\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h1>TV(ATSC) P.S.D Estimates &#8211; Philadelphia<\/h1>\n<p>This is generated using the standard CityScape station software and Octave (free Matlab alternative).<\/p>\n<p><a href=\"https:\/\/depts.washington.edu\/funlab\/wp-content\/uploads\/2017\/11\/512-608MHz.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1281\" src=\"https:\/\/depts.washington.edu\/funlab\/wp-content\/uploads\/2017\/11\/512-608MHz.png\" alt=\"\" width=\"1200\" height=\"902\" srcset=\"https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz.png 1200w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz-300x226.png 300w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz-1024x770.png 1024w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz-768x577.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<h2>Collection Time<\/h2>\n<ul>\n<li class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">2017-07-14 12:00 \u2013 13:00 (UTC)<br \/>\n<\/span><\/span><\/li>\n<\/ul>\n<h2>Data Structure<\/h2>\n<ul>\n<li>512 &#8211; 608MHz PSD estimates, min\/max\/avg.<\/li>\n<\/ul>\n<h2>Sensor configuration<\/h2>\n<ul>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Location: Graduate Research Wing Rooftop, 200 South 3rd street, Philadelphia, PA 19104, United States.<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Hardware: USRP N200 + UBX40 daughterboard, connected to wideband discone antennas. Calibrated to provide dBm readings (roughly).<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Rx Amplifier Gain: 0dB <\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Antenna Port: RX2 (a wideband discone antenna attached).<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Sampling Rate (after decimation): 25MS\/s<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">(DSP-level) Intermediate Frequency: 0 Hz<br \/>\n<\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h2>Data File (Matlab-comaptible)<\/h2>\n<p><a href=\"https:\/\/drive.google.com\/file\/d\/1a8SqNedp5ycFOc4qIWCEx_uoNRBsScl4\/view?usp=sharing\">Download<\/a><\/p>\n<h1>TV(ATSC) P.S.D Estimates &#8211; University of Washington<\/h1>\n<p>This is generated using the standard CityScape station software and Octave (free Matlab alternative). For comparison, data collected using a Keysight spectrum analyzer (FieldFox) is also shown.<\/p>\n<p><a href=\"https:\/\/depts.washington.edu\/funlab\/wp-content\/uploads\/2017\/11\/512-608MHz_UW.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1282\" src=\"https:\/\/depts.washington.edu\/funlab\/wp-content\/uploads\/2017\/11\/512-608MHz_UW.png\" alt=\"\" width=\"1200\" height=\"902\" srcset=\"https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz_UW.png 1200w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz_UW-300x226.png 300w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz_UW-1024x770.png 1024w, https:\/\/wp.ece.uw.edu\/wp-content\/uploads\/sites\/36\/2017\/11\/512-608MHz_UW-768x577.png 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<h2>Collection Time<\/h2>\n<h3>Cityscape<\/h3>\n<ul>\n<li class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">2017-07-10 5:00 \u2013 6:00 (UTC) <\/span><\/span><\/li>\n<\/ul>\n<h3>Keysight FieldFox<\/h3>\n<ul>\n<li><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">2017-07-10 8:00 \u2013 10:00 (UTC) <\/span><\/span><\/li>\n<\/ul>\n<h2>Data Structure<\/h2>\n<ul>\n<li>512 &#8211; 608MHz PSD estimates, min\/max\/avg.<\/li>\n<\/ul>\n<h2>Sensor configuration<\/h2>\n<h3>Cityscape<\/h3>\n<ul>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Location: 3960 Benton Lane NE, Sieg Hall (rooftop), University of Washington, Seattle, WA 98195<br \/>\n<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Hardware: USRP N200 + UBX40 daughterboard, connected to wideband discone antennas. Calibrated to provide dBm readings (roughly).<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Rx Amplifier Gain: 0dB <\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Antenna Port: RX2 (a wideband discone antenna attached).<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">Sampling Rate (after decimation): 25MS\/s<\/span><\/span><\/p>\n<\/li>\n<li>\n<p class=\"cjk\"><span style=\"font-family: Times New Roman, serif\"><span lang=\"en-US\">(DSP-level) Intermediate Frequency: 0 Hz<br \/>\n<\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<h3>Keysight FieldFox<\/h3>\n<ul>\n<li>Sensor: Agilent(Keysight) FieldFox N9914A, spectrum analyzer mode.<\/li>\n<li>Attenuation : 0dB; Pre-amplifer: off<\/li>\n<li>Antenna Port #2<\/li>\n<li>Resolution Bandwidth: 20 kHz<\/li>\n<li>100 averages.<\/li>\n<\/ul>\n<h2>Data File (Matlab-comaptible)<\/h2>\n<p><a href=\"https:\/\/drive.google.com\/file\/d\/1dJ2S-NyZV6JjlLDrRfqA4RgWkf7PYCKn\/view?usp=sharing\">Cityscape<\/a><\/p>\n<p><a href=\"https:\/\/drive.google.com\/file\/d\/1lW5T1mSserQZejjXFUm8v7wwlPZeqsWa\/view?usp=sharing\">Keysight FieldFox<\/a><\/p>\n<h2>Note<\/h2>\n<p>*CityScape stations gave better noise floor in this case, but also more spurious signals. Both Keysight FieldFox and Cityscape stations quickly overloaded when the gain level of the preamp are increased (due to the strong wideband RF energy coming from the outdoor discone antenna).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Below are some sample p.s.d estimate data collected using Philadelphia CityScape stations. LTE Band 17 Downlink (709MHz) Spectrogram (*This data is collected by running custom scripts on the stations, not using the default CityScape collection software.) Collection Time 2017-09-12 17:17 \u2013 18:17 (UTC) (1:17 \u2013 2:17pm EDT) Data Structure 703.96 \u2013 714.04 MHz, 180 kHz &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/wp.ece.uw.edu\/funlab\/research\/archived-projects\/software-defined-wireless-networks\/cityscape-project-spectrum-plots\/\">Continue reading<\/a><\/p>\n","protected":false},"author":71,"featured_media":0,"parent":171,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"tags":[],"class_list":["post-1275","page","type-page","status-publish","hentry","nodate","item-wrap"],"_links":{"self":[{"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/pages\/1275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/users\/71"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/comments?post=1275"}],"version-history":[{"count":1,"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/pages\/1275\/revisions"}],"predecessor-version":[{"id":1871,"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/pages\/1275\/revisions\/1871"}],"up":[{"embeddable":true,"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/pages\/171"}],"wp:attachment":[{"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/media?parent=1275"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.ece.uw.edu\/funlab\/wp-json\/wp\/v2\/tags?post=1275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}