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MOBICOM
2009
ACM
15 years 11 months ago
Achievable throughput of multiple access spectrum systems based on cognitive relay
Cognitive relays form a special cooperation relationship among users in cognitive radio networks, and help increase the transmission rates of both primary users and secondary user...
Wei Wang, Baochun Li, Li Yu
CDC
2008
IEEE
197views Control Systems» more  CDC 2008»
15 years 11 months ago
Dynamic spectrum access policies for cognitive radio
—We study the problem of dynamic spectrum sensing and access in cognitive radio systems as a partially observed Markov decision process (POMDP). A group of cognitive users cooper...
Jayakrishnan Unnikrishnan, Venugopal V. Veeravalli
SRDS
2008
IEEE
15 years 11 months ago
Towards Reliable Reputations for Dynamic Networked Systems
A new generation of distributed systems and applications rely on the cooperation of diverse user populations motivated by self-interest. While they can utilize “reputation syste...
Gayatri Swamynathan, Ben Y. Zhao, Kevin C. Almerot...
142
Voted
ICDCS
2007
IEEE
15 years 11 months ago
An Empirical Study of Collusion Behavior in the Maze P2P File-Sharing System
Peer-to-peer networks often use incentive policies to encourage cooperation between nodes. Such systems are generally susceptible to collusion by groups of users in order to gain ...
Qiao Lian, Zheng Zhang, Mao Yang, Ben Y. Zhao, Yaf...
151
Voted
IPPS
2007
IEEE
15 years 11 months ago
United-FS: A Logical File System Providing a Single Image of Multiple Physical File Systems on NFS Server
NFS is considered to be the bottleneck in cluster computing environment because of its limited resources and centralized data management. With the development of hardware, NFS ser...
Huan Chen, Yi Zhao, Jin Xiong, Jie Ma, Ninghui Sun