Follow her on twitter or check out her website. I am a pretty creative person. However, my creativity reaches superhuman levels when it comes to avoiding my dissertation. Neither of my desks in my apartment feel right today, nor does my kitchen table or couch.
School of Engineering and Applied Sciences Harvard University My dissertation research In my dissertation research, I develop techniques to improve wireless network efficiency and capacity via opportunistic wireless network architectures.
My dissertation research is broadly motivated by two prevalent trends: With an increase in the proliferation of various forms of mobile devices, wireless networks are slated to become the dominant method of network access of the future.
Such advances have begun to place a premium on radio spectrum, which is fast becoming a scarce and expensive resource. However, despite the significant growing pressures on spectrum in current wireless networks, there exist large portions of the overall spectrum that are severely under-utilized.
Most wireless networks have been designed to operate within statically allocated slabs of spectrum. This approach restricts the capacity of wireless networks even when there exist opportunities to better use the spectrum.
For example, even if other portions of spectrum lie unused, Wi-Fi devices must only use the allocated 2. What implications do these trends have? The spectrum commons theory considers spectrum to be a good owned by the people and not by any private entity or the government.
But entities may be given licenses to use portions of the spectrum exclusively for limited periods of time. Hence, when viewed under the lens of this theory, these two observations point to a course of action: Driven by these observations, my dissertation work has developed the principles and techniques to build opportunistic wireless networks, which work by continually seeking and using portions of spectrum currently underused by incumbents, and being agile enough to vacate portions of the spectrum if any incumbent returns.
Where might this work be applicable today? A prominent emerging system where opportunistic wireless networking can work well is in the so-called white spaces.
White spaces are those channels that, in an instant in time, are not used by the incumbents: The historic decision by the Federal Communication Commission FCC in permits the operation of unlicensed devices over these white spaces, as long as such operation does not hamper incumbent operation.
The key observation behind this work lies in the characterization of white spaces spectrum as being fragmented and varying spatially and temporally. Hence, it makes the case for why conventional Wi-Fi based techniques do not suffice.
Consequently, WhiteFi proposes new adaptive algorithms and protocols for spectrum assignment, association, and handoffs, which factor in the characteristics of the white spaces spectrum.
A prototype implementation and evaluation of WhiteFi reveals the need and efficacy of these new approaches in enabling opportunistic networking over the white spaces. WhiteFi takes the first stab at networking over the white spaces and in doing so, it lays the ground work for future work that builds on it.
This permits site-specific customization of the wireless network and the ability to quickly roll out innovations into the wireless network.
Conventional wireless network designs, often stifled by the pace of standardization, are not architected to embrace such changes easily.
Dyson defines a set of APIs that allow clients and base stations to send pertinent information such as radio channel conditions to a central authority such as the SenseLess database.
The central authority processes this information to form a global view of the network and make decisions. A prototype implementation of Dyson reveals the ease with which network functionality can be changed.
The initial vision for Dyson appeared in our HotNets paper as Trantor What is the roadmap for my dissertation work?Because it's that time of year again – dissertation time. Luckily for me, my D-Day (dissertation hand-in day) has already been and gone. But I remember it well. Write My Dissertation service is a legit company of professional researchers and academic writers, and our task is to provide premium dissertation service to.
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The sun is shining but many students won't see the daylight. Because it's that time of year again – dissertation time.
Luckily for me, my D-Day (dissertation hand-in day) has already been and gone. My dissertation work primarily consists of four major projects. Briefly, WhiteFi (SIGCOMM , best paper award) is the first Wi-Fi-like network to function over the white spaces.
SenseLess (DySpan ) eliminates the need for spectrum sensing, a key stumbling block in conventional white spaces networks. My dissertation work primarily consists of four major projects. Briefly, WhiteFi (SIGCOMM , best paper award) is the first Wi-Fi-like network to function over the white spaces.
SenseLess (DySpan ) eliminates the need for spectrum sensing, a key stumbling block in conventional white spaces networks. Can You Write My Dissertation Cheap?
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