25 6.25 1.25 1.25 3.75 3.75
FIGURE 7.14
Transmit mask for dense interrogator environments (EPC radio frequency identity protocols class-1 generation-2
UHF RFID protocol for communications at 860??“960 MHz version 1.0.9. (From EPCglobal, EPC Radio-Frequency
Identity Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860 MHz??“960 MHz Version
1.0.9, EPCglobal Standard Speci?¬?cation, 2004, With permission # 2004 by EPCglobal.)
RFID Reader Synchronization 137
recommendation, and with variation of the normal operating procedure can also deal with
the effects of tag confusion. However, these bene?¬?ts require the use of more complex
hardware and hence can marginally increase deployment costs.
References
Carbunar, B., M.K. Ramanathan, M. Koyuturk, et al. 2005. Redundant reader elimination in
RFID systems. Second Annual IEEE Communications Society Conference on SECON, Santa Clara,
California, USA.
CISC. Consolidated proposal on synchronization. 2006. ETSI Electromagnetic Compatibility and
Radio Spectrum Matters, Task Group 34, RF Identi?¬?cation Devices, ETSI ERMTG34#12_012.
Engels, D.W. and S.E. Sarma. 2002. The reader collision problem. IEEE International Conference on
Systems, Man and Cybernetics. vol. 3, 6 pp.
EPCglobal. 2004. EPC Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol
for Communications at 860 MHz??“960 MHz Version 1.
Pages:
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278