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GLOBECOM
2008
IEEE
14 years 4 months ago
Impact of Constraints on the Complexity of Dynamic Spectrum Assignment
— In this paper we study the complexity of spectrum assignment problems in cognitive radio networks (CRNs) in the presence of several constraints. Although optimal spectrum assig...
Chetan Nanjunda Mathur, Mohamed A. Haleem, Rajarat...
VR
2008
IEEE
136views Virtual Reality» more  VR 2008»
14 years 4 months ago
Uncertainty Boundaries for Complex Objects in Augmented Reality
Registration errors between the physical world and computergenerated objects are a central problem in Augmented Reality (AR) systems. Some existing AR systems have demonstrated ho...
Jiajian Chen, Blair MacIntyre
CISS
2007
IEEE
14 years 4 months ago
High-Throughput Cooperative Communications with Complex Field Network Coding
Relay-based cooperative communications can achieve spatial diversity gains, enhance coverage and potentially increase capacity. If considered for large networks, traditional relayi...
Tairan Wang, Georgios B. Giannakis
ICC
2007
IEEE
14 years 4 months ago
A Statistical Bit Error Generator for Emulation of Complex Forward Error Correction Schemes
— Forward Error Correction (FEC) schemes are generally used in wireless communication systems to maintain an acceptable quality of service. Various models have been proposed in l...
Reuben A. Farrugia, Carl James Debono
BROADNETS
2006
IEEE
14 years 4 months ago
Complexity of Converter Placement Supporting Broadcast in WDM Networks
Abstract— Wavelength converters simplify the wavelength assignment problem in virtual topology design in optical networks and increase the utilization of the fiber bandwidth. Ho...
Rudra Dutta, Prashant Iyer, Carla D. Savage