)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10
Complete
2 W
100 mW 500 mW
FIGURE 7.13
Variation in the separation of transmitting (Tx) and receiving
(Rx) channel of an RFID reader. (From Leong, K.S.,
M.L. Ng, and P.H. Cole. 2006a. Synchronization of RFID
readers for dense RFID reader environments. International
Symposium on Applications and the Internet. SAINT, Phoenix,
Arizona, USA, # 2006 by IEEE. With permission;
Leong, K.S., M.L. Ng, A. Grasso, and P.H. Cole. 2006d.
J. Commun., 1, 9,# 2006 by IEEE.With permission.)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10
Tx Tx Tx Tx
Rx Rx Rx Rx Rx
136 RFID Handbook: Applications, Technology, Security, and Privacy
If a synchronized RFID system in European countries, which only occupied a bandwidth
of 3 MHz, can perform on par with an FHSS RFID system in the United States, it can be
safety deduced that RFID reader synchronization using 15.245 can bring improvement to
the RFID operation in the United States. With a broader bandwidth available (50 channels
of 500 kHz each as compared with 10 channels of 200 kHz each), a synchronized RFID in
the United States can offer more coverage and higher reading speed.
7.9 Updated Progress on Development of RFID Reader Synchronization
The regulation of RFIDreader synchronization in the European countries is governed by ETSI.
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