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GLOBECOM
2009
IEEE
14 years 18 days ago
Coexistence Problem in IEEE 802.22 Wireless Regional Area Networks
IEEE 802.22 wireless regional area network (WRAN) is an emerging cognitive radio-based system. One of the major challenges for WRANs is how to efficiently schedule both channel sen...
Raed T. Al-Zubi, Mohammad Z. Siam, Marwan Krunz
CORR
2010
Springer
170views Education» more  CORR 2010»
13 years 8 months ago
Slow Adaptive OFDMA Systems Through Chance Constrained Programming
Adaptive orthogonal frequency division multiple access (OFDMA) has recently been recognized as a promising technique for providing high spectral efficiency in future broadband wire...
William Weiliang Li, Ying Jun Zhang, Anthony Man-C...
IPPS
2008
IEEE
14 years 3 months ago
Design and optimization of a distributed, embedded speech recognition system
In this paper, we present the design and implementation of a distributed sensor network application for embedded, isolated-word, real-time speech recognition. In our system design...
Chung-Ching Shen, William Plishker, Shuvra S. Bhat...
CORR
2008
Springer
130views Education» more  CORR 2008»
13 years 7 months ago
Spectrum Allocation in Two-Tier Networks
Abstract-- Two-tier networks, comprising a conventional cellular network overlaid with shorter range hotspots (e.g. femtocells, distributed antennas, or wired relays), offer an eco...
Vikram Chandrasekhar, Jeffrey G. Andrews
BMCBI
2008
242views more  BMCBI 2008»
13 years 8 months ago
New time-scale criteria for model simplification of bio-reaction systems
Background: Quasi-steady state approximation (QSSA) based on time-scale analysis is known to be an effective method for simplifying metabolic reaction system, but the conventional...
Junwon Choi, Kyung-won Yang, Tai-yong Lee, Sang Yu...