Nasreddine Hajlaoui

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The IEEE 802.11n standard promises to extend today’s most popular WLAN standard by significantly increasing reachability, reliability, and throughput. Ratified on September 2009, this standard defines many new physical and medium access control (MAC) layer enhancements. These enhancements aim to provide a data transmission rate of up to 600 Mbps. Since June(More)
In this paper, we consider a deconvolution problem where the point spread function (PSF) of the optical imaging system varies between different spatial locations, thus leading to a spatially varying blur. This problem arises, for example, in synthetic aperture instruments and in wide-field optical systems. Unlike the classical deconvolution context where(More)
The 802.11n standard promises to extend todays most popular WLAN standard by significantly increasing reach, reliability, and throughput. Ratified on September 2009, this standard defines many new physical layer and medium access control (MAC) layer enhancements. These enhancements aim to provide a data transmission rate of up to 600 Mbps. Since June 2007,(More)
The IEEE 802.11n protocol, ratified on September 2009, promises both higher data rates up to 600 Mbit/s and further range. In this paper we investigate the effect of most of the proposed 802.11n MAC and physical layer enhancements on the adhoc networks performance. Experimental results in a real indoor wireless testbed demonstrated the effectiveness of(More)
With many improvements in both the physical and MAC layers, the IEEE 802.11n standard aims to achieve a data transmission rate of up to 600 Mbps. The most important 802.11n MAC enhancement is frame aggregation which significantly reduces the headers overheads of the legacy MAC by aggregating multiple frames into a single large frame. In this paper we drive(More)
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