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SIGCOMM
2009
ACM
16 years 1 months ago
CrossTalk: scalably interconnecting instant messaging networks
We consider the problem of interconnecting a simple type of social network: Instant Messaging services. Today, users are members of various IM communities such as AOL, Yahoo, and ...
Marti A. Motoyama, George Varghese
ICC
2008
IEEE
120views Communications» more  ICC 2008»
16 years 29 days ago
Near-Optimum Soft-Output Ant-Colony-Optimization Based Multiuser Detection for the DS-CDMA Uplink
— In this contribution, a novel soft-output Ant Colony Optimization (ACO) based Multi-User Detector (MUD) is proposed for the synchronous Direct-Sequence Code-DivisionMultiple-Ac...
Chong Xu, Lie-Liang Yang, Robert G. Maunder, Lajos...
INFOCOM
2008
IEEE
16 years 28 days ago
Spot Pricing of Secondary Spectrum Usage in Wireless Cellular Networks
—Recent deregulation initiatives enable cellular providers to sell excess spectrum for secondary usage. In this paper, we investigate the problem of optimal spot pricing of spect...
Huseyin Mutlu, Murat Alanyali, David Starobinski
WCNC
2008
IEEE
16 years 27 days ago
Distributed Energy Efficient Spectrum Access in Wireless Cognitive Radio Sensor Networks
—In this paper, a wireless cognitive radio sensor network is considered, where each sensor node is equipped with cognitive radio and the network is a multi-carrier system operati...
Song Gao, Lijun Qian, Dhadesugoor R. Vaman
ICC
2007
IEEE
104views Communications» more  ICC 2007»
16 years 25 days ago
Joint Design of Tx-Rx Beamformers in MIMO Downlink Channel
We consider a single-cell multiple-input multiple-output (MIMO) downlink channel where linear transmission and reception strategy is employed. The base station (BS) transmitter is...
Marian Codreanu, Antti Tölli, Markku J. Juntt...