volume | PIER Journals

2009-03-25

Study on the Demodulation Structure of Reader Receiver in a Passive RFID Environment

Ji-Hoon Bae,

Prof. Ji-Hoon Bae

AI & Big Data Engineering

Daegu Catholic University (DCU)

Rep. of Korea

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Won-Kyu Choi,

Dr. Won-Kyu Choi

RFID/USN Research Group

Electronics and Telecommunications Research Institute (ETRI)

Korea

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Jeong-Seok Kim,

Dr. Jeong-Seok Kim

RFID/USN Research Group

Electronics and Telecommunications Research Institute (ETRI)

Korea

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Gil-Young Choi,

Dr. Gil-Young Choi

RFID/USN Research Group

Electronics and Telecommunications Research Institute (ETRI)

Korea

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Jong-Suk Chae

Dr. Jong-Suk Chae

IT Convergence Technology Research Lab

South Korea

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Progress In Electromagnetics Research, Vol. 91, 243-258, 2009

doi:10.2528/PIER09021103 | Google Scholar

Abstract

In this paper, we present a demodulation structure suitable for a reader receiver in a passive Radio Frequency IDentification (RFID) environment. In a passive RFID configuration, undesirable DC-offset phenomenon may appear in the baseband of the reader receiver. As a result, this DC-offset phenomenon can severely degrade the performance of the extraction of valid information from a received signal in the reader receiver. To mitigate the DC-offset phenomenon, we propose a demodulation structure to reconstruct a corrupted signal with the DC-offset phenomenon, by extracting useful transition information from the corrupted signal. It is shown that the proposed method can successfully detect valid data from a received signal, even when the received baseband signal is distorted with the DC-offset phenomenon.

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Ji-Hoon Bae, Won-Kyu Choi, Jeong-Seok Kim, Gil-Young Choi, and Jong-Suk Chae, "Study on the Demodulation Structure of Reader Receiver in a Passive RFID Environment," Progress In Electromagnetics Research, Vol. 91, 243-258, 2009.
doi:10.2528/PIER09021103

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