RF Spectrum Cartography for Cognitive Radio Networks

讲座名称: RF Spectrum Cartography for Cognitive Radio Networks
讲座时间: 2012-07-11
讲座人: Georgios B. Giannakis
形式:
校区: 兴庆校区
实践学分:
讲座内容: 应电信学院信通系任品毅教授和李国兵博士的邀请,美国明尼苏达大学Georgios B. Giannakis教授,IEEE Fellow,IEEE G. Marconi奖获得者,来我校进行学术交流。 报告时间:2012年7月11日上午11:00-12:00 报告地点:科学馆207 (可盖章) 报告题目:RF Spectrum Cartography for Cognitive Radio Networks 报告摘要:Spectrum sensing is a critical prerequisite in envisioned applications of wireless cognitive radio (CR) networks, which promise to resolve the perceived bandwidth scarcity versus under-utilization dilemma. This talk presents recent advances for comprehensive situation awareness at the PHY of CR networks by capitalizing on the novel notion of RF cartography, which amounts to constructing two families of maps: (m1) global power spectral density maps capturing the distribution of power across space, time, and frequency; and (m2) local channel gain maps providing the propagation medium per frequency from each node to any point in space and time. Paralleling the success of routing tables, the vision is to have CR nodes jointly utilize these maps so as to enable: (v1) identification of opportunistically available spectrum bands for re-use, and handoff operation; (v2) localization, transmit-power estimation, and tracking of primary user activities; and (v3) interference control, resource allocation, and routing. If time allows, distributed and sequential implementations of CR sensing will be presented too.
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