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Registered SYMBOL SYNCHRONIZATION APPARATUS AND METHOD OF PASSIVE RFID READER
- Inventors
- Ji-Hoon Bae, Choi Gil Young, Cho Kwang-Soo, Chae Jong- Suk, Lee Donghan, Choi Won Kyu, Chan-Won Park, Quan Cheng-Hao, Park Man Sik
- Application No.
- 12832914 (2010.07.08)
- Publication No.
- 20110096883 (2011.04.28)
- Registration No.
- 8724761 (2014.05.13)
- Country
- UNITED STATES
- Project Code
- 09IC1900, Development of Next Generation RFID Technology for Item Level Applications, Chae Jong- Suk
- Abstract
- Provided is a symbol synchronization apparatus and method of a passive RFID reader. The symbol synchronization apparatus includes: an edge clock detector generating edge clocks by detecting phase inversion positions of a received signal; a preamble detector detecting a preamble section by analyzing the generation times of the edge clocks; a symbol decision time extractor extracting a symbol decision time by averaging distances between the edge clocks consecutively generated in the preamble section, when the preamble section is detected; and a symbol decider deciding a symbol by analyzing the magnitude of the received signal, when the time reaches the symbol decision time.
- KSP Keywords
- Clock detector, Decision time, Passive RFID, Passive RFID reader, Phase inversion, RFID reader, Symbol synchronization