[Colloq] REMIDNER: PhD Thesis Proposal by Yin Wang, Friday, Jan. 29 - Time changed to 1:45

[Rachel Kalweit]

The College of Computer and Information Science Presents: 

Dissertation Proposal Presentation by: 
Yin Wang 

Date: Friday, January 29, 2010 
Time: 1:45pm 
Location: 366 West Village H 

Title: Distributed Diversity in Hybrid Wireless Networks 

Abstract: 

Wireless communication networks span a wide range of applications such 
as traditional telephony, internet data access, and cyber-physical 
infrastructure monitoring. However, the quality of service is still lacking, and 
problems such as dropped calls, dead spots, and slow network speed are still very 
common. Those are due to fundamental constraints such as the scarcity of radio- 
frequency spectrum, signal propagation effects, e.g., channel fading and 
shadowing, and the small form factor of mobile devices with limited 
energy capacity and antenna diversity. 

In this thesis, we propose to explore a new cooperative communication 
model. We investigate communication strategies that exploit the channel and 
traffic diversity across a set of cooperating mobile nodes equipped with 
multiple radio frequency interfaces (e.g., cellular, WiFi). The research aims at 
developing a framework for cooperation across multiple network layers to 
improve robustness, throughput, and delays. The proposed cooperation is 
based on two strategies: signal-combining and traffic-multiplexing. 
Within this framework, we propose and evaluate a set of distributed cooperation 
techniques operating at different hierarchical levels with resource 
constraints such as short-range RF bandwidth. Our evaluation is based 
on a combination of analysis, simulations, and real world experiments using 
system prototypes. 


Committee: 
Guevara Noubir (Advisor) 
Rajmohan Rajaraman 
Ravi Sundaram 
Stefano Basagni 
Benyuan Liu (UMass Lowell) 

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