Evaluation scheme RFID channel in library with wooden and metal book shelves based on measurement data

At the present time, radio frequency identification (RFID) library management system are applied in many libraries for convenience and more efficiency. Channel modeling is necessary for predicting received power and performance system. In this paper, the channel of wooden and metal book shelves are modeled for RFID library management system. The channels were measured at frequency of 2.45 GHz. The microstrip antennas were used as both transmitter (Tx) and receiver (Rx) antennas. Vertical-vertical (V-V) and horizontal-horizontal (H-H) polarizations are considered. Linear regression is used to model the path loss characteristic. After that, statistical models, cumulative distribution function (CDF), are used to characterize the multipath fading. From the results, we can conclude that the wooden book shelves of V-V polarization and metal book shelves of H-H polarization are appropriate to use for RFID library management system.