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GLOBECOM
2008
IEEE
8 years 9 months ago
Opportunity Detection for OFDMA Systems with Timing Misalignment
— Accurate detection of spectrum opportunities within the frequency band of an orthogonal frequency division multiple access (OFDMA) system is a critical requirement for the real...
Mustafa E. Sahin, Ismail Güvenç, Moo-R...
ICASSP
2011
IEEE
7 years 7 months ago
Timing adjustment techniques to mitigate interference between multiple nodes in OFDMA mesh networks
We configure the multiple node interference (MNI) on OFDMA mesh networks and analyze the feature of this MNI as a closed form in terms of timing misalignment between multiple nod...
Sungeun Lee, Xiaoli Ma
VTC
2008
IEEE
139views Communications» more  VTC 2008»
8 years 9 months ago
Downlink Steered Space-Time Spreading For Multi-Carrier Transmission Over Frequency Selective Channels
— This paper presents a novel amalgam of Steered Space-Time Spreading (SSTS) and Orthogonal Frequency Division Multiple Access (OFDMA) designed for attaining both spatial diversi...
Nazar Sahal, Mohammed El-Hajjar, Lajos Hanzo
GLOBECOM
2007
IEEE
8 years 9 months ago
A Novel OFDMA Ranging Method Exploiting Multiuser Diversity
This paper addresses initial ranging (uplink synchronization and power control) for TDD OFDMA systems. Exploiting the channel knowledge from the downlink channel together with ini...
Jianqiang Zeng, Hlaing Minn
SIBGRAPI
2009
IEEE
8 years 10 months ago
Multi-Frame Motion Detection for Active/Unstable Cameras
—Network cameras, extensively used in video surveillance, often allow pan-tilt-zoom functionality and are also subject to wind load and mount vibrations, thus causing video frame...
Mirko Ristivojevic, Janusz Konrad
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