hamed_sotoudi
Joined: 01 Aug 2007
Posts: 117
Helped: 11
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 07 Jul 2008 18:45 I need this IEEE paper |
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Hi every body. I need these IEEE papers. I 'll appriciate any body who will send them to me. Thanks alot.
1-HiQ: a hierarchical Q-learning algorithm to solve the reader collision problem
Ho, J.; Engels, D.W.; Sarma, S.E.
Applications and the Internet Workshops, 2006. SAINT Workshops 2006. International Symposium on
Volume , Issue , 23-27 Jan. 2006 Page(s): 4 pp. -
Digital Object Identifier 10.1109/SAINT-W.2006.20
Summary: HiQ is a hierarchical, online learning algorithm that finds dynamic solutions to the reader collision problem in RFID systems. When the transmissions from one reader interfere with the operation of another reader, a reader collision occurs. The objective of the reader collision problem is to minimize the reader collisions experienced by RFID readers while using the minimum number of frequencies and using the minimum total time for all readers to communicate successfully. HiQ attempts to minimize reader collisions by learning the collision patterns of the readers and by effectively assigning frequencies over time to ensure neighboring readers do not experience collisions from one another. HiQ is arranged hierarchically with distributed, local control. The algorithm is based on a type of reinforcement learning called Q-learning, which is used to determine frequency and time assignments. Through repeated interaction with the system, Q-learning attempts to discover an optimum frequency assignment over time. We show that HiQ finds optimal or near optimal solutions to the reader collision problem.
2-A Novel Solution to the Reader Collision Problem in RFID System
Dong Wang; Jianwei Wang; Yuping Zhao
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Volume , Issue , 22-24 Sept. 2006 Page(s):1 - 4
Digital Object Identifier 10.1109/WiCOM.2006.340
Summary:Radio frequency identification (RFID) is one of the hottest research topics in recent communication area. In the RFID system, the reader collision problem (RCP) is considered to be the bottleneck of the system throughput and reading efficiency. In this paper, a novel RCP solution-central cooperator (CC)-RFID is proposed to reduce the reader collisions by sharing the tag information among adjacent readers in RFID network. Both analytical and simulation results show that the proposed schemes improve the reading speed and efficiency dramatically compared to current popular RCP solutions
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