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INFOCOM
2007
IEEE
16 years 1 months ago
Losing Opportunism: Evaluating Service Integration in an Opportunistic Wireless System
Abstract— In this paper we evaluate interactions among flowlevel performance metrics when integrating QoS and best effort flows in a wireless system using opportunistic schedul...
Hongseok Kim, Gustavo de Veciana
VTC
2007
IEEE
128views Communications» more  VTC 2007»
16 years 1 months ago
Performance of Space-Code-Division Multiple-Access Systems Using Reduced-Rank Detection
Abstract—In this contribution the performance of multipleinput multiple-output space-division, code-division multipleaccess (MIMO SCDMA) is investigated, when the low-complexity ...
Jiliang Zhang, Lie-Liang Yang
193
Voted
CMS
2001
119views Communications» more  CMS 2001»
15 years 8 months ago
Vulnerabilities and Security Limitations of current IP Telephony Systems
Abstract Within the traditional telephone system a certain level of quality and security has been established over the years. If we try to use IP Telephony systems as a core part o...
Ralf Ackermann, Markus Schumacher, Utz Roedig, Ral...
ICC
2007
IEEE
16 years 1 months ago
Adaptive Channel Reuse in Cellular Systems
Abstract— In cellular systems a large reuse distance reduces cochannel interference while a small reuse distance increases bandwidth allocated to each cell. The optimal reuse dis...
Yifan Liang, Andrea J. Goldsmith
EUC
2005
Springer
16 years 20 days ago
Realtime H.264 Encoding System Using Fast Motion Estimation and Mode Decision
Abstract. H.264 provides various useful features such as improved coding efficiency and error robustness. These features enable mobile device to adopt H.264/AVC standard to achieve...
Byeong-Doo Choi, Min-Cheol Hwang, Jun-Ki Cho, Jin-...