KR100898328B1 - Rfid 통신 시스템에서의 심볼 검출 방법 - Google Patents
Rfid 통신 시스템에서의 심볼 검출 방법 Download PDFInfo
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- KR100898328B1 KR100898328B1 KR1020070110106A KR20070110106A KR100898328B1 KR 100898328 B1 KR100898328 B1 KR 100898328B1 KR 1020070110106 A KR1020070110106 A KR 1020070110106A KR 20070110106 A KR20070110106 A KR 20070110106A KR 100898328 B1 KR100898328 B1 KR 100898328B1
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- communication system
- fast fourier
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- 238000004891 communication Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 15
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 230000004044 response Effects 0.000 claims description 8
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
Claims (3)
- 삭제
- RFID 통신 시스템에서의 심볼 검출 방법에 있어서,입력되는 수신신호에 대한 I(Inphase) 성분과 Q(Quadrature) 성분의 각각의 태그 응답 신호를 출력하는 과정과,상기 출력된 태그 응답 신호를 이용하여 심볼 구간 단위로 하나의 샘플씩 고속 푸리에 변환하고, 그에 따른 변환값을 출력하는 과정과,상기 고속 푸리에 변환되어 출력된 신호를 이용하여 심볼 0과 심볼 1에 대한 각각의 지점에서의 전력합을 구하는 과정과,상기 심볼 0에 대한 각각의 지점에서의 전력합과 심볼 1에 대한 각각의 지점에서의 전력합을 서로 비교하고, 상기 비교 결과에 따라 0 또는 1의 심볼값을 출력하는 과정을 포함함을 특징으로 하는 심볼 검출 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020070110106A KR100898328B1 (ko) | 2007-10-31 | 2007-10-31 | Rfid 통신 시스템에서의 심볼 검출 방법 |
Applications Claiming Priority (1)
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KR1020070110106A KR100898328B1 (ko) | 2007-10-31 | 2007-10-31 | Rfid 통신 시스템에서의 심볼 검출 방법 |
Publications (2)
Publication Number | Publication Date |
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KR20090044155A KR20090044155A (ko) | 2009-05-07 |
KR100898328B1 true KR100898328B1 (ko) | 2009-05-20 |
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KR1020070110106A KR100898328B1 (ko) | 2007-10-31 | 2007-10-31 | Rfid 통신 시스템에서의 심볼 검출 방법 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101220178B1 (ko) | 2009-10-28 | 2013-01-11 | 한국전자통신연구원 | 수동형 rfid 리더의 심볼 동기화 방법 및 장치 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010001707A (ko) * | 1999-06-08 | 2001-01-05 | 윤종용 | 직교주파수 분할 다중 방식/코드 분할 다중 접속 시스템의 대략적 주파수 동기 획득 장치 및 방법 |
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- 2007-10-31 KR KR1020070110106A patent/KR100898328B1/ko active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010001707A (ko) * | 1999-06-08 | 2001-01-05 | 윤종용 | 직교주파수 분할 다중 방식/코드 분할 다중 접속 시스템의 대략적 주파수 동기 획득 장치 및 방법 |
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KR20090044155A (ko) | 2009-05-07 |
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