Practical Genetic Algorithms with CD-ROM
Practical Genetic Algorithms with CD-ROM
Optimum antenna downtilt angles for macrocellular WCDMA network
EURASIP Journal on Wireless Communications and Networking
A Layered Optimization Approach for Redundant Reader Elimination in Wireless RFID Networks
APSCC '07 Proceedings of the The 2nd IEEE Asia-Pacific Service Computing Conference
A Density-Based Algorithm for Redundant Reader Elimination in a RFID Network
FGCN '08 Proceedings of the 2008 Second International Conference on Future Generation Communication and Networking - Volume 01
Short survey: Taxonomy and survey of RFID anti-collision protocols
Computer Communications
DiCa: distributed tag access with collision-avoidance among mobile RFID readers
EUC'06 Proceedings of the 2006 international conference on Emerging Directions in Embedded and Ubiquitous Computing
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Radio Frequency Identification (RFID) systems, due to recent technological advances, have been used for various advantages in industries like production facilities, supply chain management etc. However, sometimes this implies a dense deployment of readers to cover the working area. Without optimizing reader's location and number, many of them will be redundant, reducing the efficiency of the whole RFID system. There are many algorithms proposed by researchers to solve redundant reader problem, but all the algorithms are based on omnidirectional reader antenna pattern, which is not practical. Therefore, the approach proposed in this paper was first applied to RFID readers using omni-directional antenna and thus, extended to directional reader antennas. Simulation results demonstrate that our approach for omnidirectional reader antenna outperforms other well-known techniques like Redundant Reader Elimination (RRE) algorithm, Layered Elimination Optimization (LEO) and LEO+RRE while preserving the coverage ratio quite close to those obtained by RRE, LEO and LEO+RRE. Then, we extended the concept to real directional reader antenna pattern using genetic algorithm to optimize the antenna beam to eliminate redundant readers.