Abstract

In radio frequency identification (RFID) systems, the detection range and read rates will suffer from interference among high power reading devices. This problem grows severely and degrades system performance in dense RFID networks. In this paper, we investigate a suite of feasible power control schemes to ensure overall coverage area of the system while maintaining a desired read rate. The power control scheme and MAC protocol dynamically adjusts the RFID reader power output in response to the interference level seen locally during tag reading for an acceptable signal-to-noise ratio (SNR). We present novel distributed adaptive power control (DAPC) and probabilistic power control (PPC) as two possible solutions. A generic UHF wireless testbed is built using UMR/SLU GEN4-SSN for implementng the protocol. Simulation and hardware results are included.

Meeting Name

45th IEEE Conference on Decision and Control, 2006

Department(s)

Electrical and Computer Engineering

Second Department

Computer Science

Sponsor(s)

Air Force Research Laboratory (Wright-Patterson Air Force Base, Ohio)
University of Missouri--Rolla. Intelligent Systems Center

Keywords and Phrases

Lyapunov Methods; Access Protocols; Adaptive Control; Decentralised Control; Distributed Control; Radiofrequency Identification; Telecommunication Control

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2006 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.