{"388961":{"#nid":"388961","#data":{"type":"event","title":"ECE Telecommunications Seminar","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ESeminar Title:\u003C\/strong\u003E \u0022Efficient Communication Protocols for Time-Varying Wireless Nanoscale Sensor Networks\u0022\u003Cbr \/\u003E\u003Cstrong\u003ESpeaker: \u003C\/strong\u003EEisa Zarepour\u003Cbr \/\u003E\u003Cstrong\u003EAffiliation:\u003C\/strong\u003E University of New South Wales (Australia)\u003Cstrong\u003E, \u003C\/strong\u003ESchool of Computer Science and Engineering\u003C\/p\u003E\u003Cp\u003E\u003Cbr \/\u003E\u003Cstrong\u003ESeminar Abstract:\u003C\/strong\u003E \u003Cbr \/\u003EAdvances in nanotechnology is paving the way for wireless nanoscale sensor networks (WNSNs), promising radically new applications in medical, biological, and chemical fields. However, the small scale poses formidable challenges for communication. The small nanomaterial-based antennas communicate in the Terahertz band, which coincide with the natural resonance frequencies of many molecule species causing severe molecular absorption and noise. The problem is particularly complicated if molecular composition of the channel changes over time, causing time-varying absorption and noise.\u003C\/p\u003E\u003Cp\u003EIn addition, molecular absorption which is a new source of noise and path loss in the Terahertz band, is highly sensitive to the type of existing molecules in channel, pressure and temperature of the medium, and also communication frequency. In many applications in which WNSNs are envisaged to be used, the channel condition (composition, pressure and temperature) could be dynamic over time which means the molecular absorption and finally the noise and path loss would be variable over time. We refer to this type of network as time varying WNSN. For example, a WNSN that is monitoring the condition inside a chemical reactor might experience different types of molecules during the synthesis due to the occurrence of different reactions.\u003C\/p\u003E\u003Cp\u003EThis research aims to design efficient reliable communication protocols over time varying WNSNs. It proposes dynamic frequency hopping and adaptive power selection as a mean to overcome the changing molecular composition problem in a time-varying WNSNs. The dynamic frequency\/power selection problem is modelled as a Markov Decision Process to derive the optimal solutions, while several practical heuristics are proposed that achieve close to optimal solution.\u003C\/p\u003E\u003Cp\u003E\u003Cbr \/\u003E\u003Cstrong\u003ESpeaker Bio:\u003C\/strong\u003E\u003Cbr \/\u003EEisa Zarepour is a Ph.D. candidate in the School of Computer Science and Engineering, University of New South Wales, Sydney, NSW, Australia. He received the Bachelor\u2019s degrees in computer engineering from the University of Razi, Kermanshah, Iran and the Master degree in software engineering from Sharif University of Technology, Tehran, Iran in 2003 and 2006, respectively. His research interest is mainly in the area of nanoscale communication, specializing in designing efficient communication protocols for wireless nanoscale sensor networks.\u003Cbr \/\u003E\u003Cbr \/\u003E\u003Cstrong\u003EFor more information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EIan Akyildiz, \u003Ca href=\u0022mailto:ian@ece.gatech.edu\u0022\u003Eian@ece.gatech.edu\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003ECordai Farrar \u003Ca href=\u0022mailto:cordai.farrar@ece.gatech.edu\u0022\u003Ecordai.farrar@ece.gatech.edu\u003C\/a\u003E, 404-894-7890\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EEisa Zarepour of the University of New South Wales will present a seminar on \u0022Efficient Communication Protocols for Time-Varying Wireless Nanoscale Sensor Networks.\u0022\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Eisa Zarepour of the University of New South Wales will present a seminar on \u0022Efficient Communication Protocols for Time-Varying Wireless Nanoscale Sensor Networks.\u0022"}],"uid":"27241","created_gmt":"2015-03-19 15:07:05","changed_gmt":"2017-04-13 21:19:43","author":"Jackie Nemeth","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2015-03-26T12:30:00-04:00","event_time_end":"2015-03-26T14:00:00-04:00","event_time_end_last":"2015-03-26T14:00:00-04:00","gmt_time_start":"2015-03-26 16:30:00","gmt_time_end":"2015-03-26 18:00:00","gmt_time_end_last":"2015-03-26 18:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"1255","name":"School of Electrical and Computer Engineering"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78751","name":"Undergraduate students"},{"id":"78761","name":"Faculty\/Staff"},{"id":"174045","name":"Graduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003ECordai Farrar\u003C\/p\u003E\u003Cp\u003ESchool of Electrical and Computer Engineering\u003C\/p\u003E\u003Cp\u003E404-894-7890\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022mailto:cordai.farrar@ece.gatech.edu\u0022\u003Ecordai.farrar@ece.gatech.edu\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}