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Yohei FUKUMIZU, Makoto NAGATA, and Kazuo TAKI

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Back-End Design of a Collision-Resistive RFID System through High-Level Modeling Approach 基于高层次建模方法的 RFID 后端设计. Yohei FUKUMIZU, Makoto NAGATA, and Kazuo TAKI IEICE TRANS. ELECTRON., VOL.E89–C, NO.11 NOVEMBER 2006. - PowerPoint PPT Presentation

Text of Yohei FUKUMIZU, Makoto NAGATA, and Kazuo TAKI

  • Back-End Design of a Collision-Resistive RFID System through High-Level Modeling ApproachRFIDYohei FUKUMIZU, Makoto NAGATA, and Kazuo TAKIIEICE TRANS. ELECTRON., VOL.E89C, NO.11 NOVEMBER 2006

  • RFIDTH-CDMA(high-level modeling techniques)(hardware-based emulation)(software-based simulation)RFID(back-end design)1000RFID(rapid-prototyping simulation system)(back-end digital signal processing)---

  • IDER (ID error rate)IDNEID (number of erroneous IDs)IDTH-CMDATime hopping CDMAPRSG (pseudo-random sequence generator)

  • 1. IntroductionRFIDRFID(communication front-end functionality)(highly multiplexed communication)(back-end signal processing)(high-level modeling approach)(back-end design methodology)

  • 2. RFID(Overview of RFID System)2.1 (Overview)RFID

  • 2.2 (Downlink Communication) (a) (Power Transmission) (b) (Synchronization)2.3 (Uplink Communication) (a) (Passband Modulation) RFIDASKID(phase-shift keying(PSK))(frequency-shift keying (FSK)) (b)TH-CDMA( TH-CDMA Multiplexing) TH-CDMA(direct-sequence code division multiple access (DSCDMA))(time division multiple accesse (TDMA))

  • 3. RFID(Modeling of RFID Link Channels)3.1 Description LevelsSPICE/MATLAB(physical interaction model)FPGA

  • 3.2 (Circuit-Level Description)SPICESPICE(a)(b)

  • MATLAB(MATLAB mathematical simulator)(a)(b)

  • 3.3 (Behavioral Modeling for Hardware Emulation) TH-CDMAFPGA

  • (random-number generation mechanisms)TH-CMDAIDID

  • (b)ID

  • 3.4 (High-Level Modeling for Software Simulation) .NET Framework 1.1(C#)

  • 3.4.1 (Transponder Class). IDTH-CDMACDMA3.4.2 (Channel Class) 3.4.3 (Reader Class) TH-CDMACRC

  • 3.4.4 (Demonstration of System Operation) (a)(b)(1)ID ; (2) ; (3)CRC (b)80%18%CRC

  • 4. 1000+RFID(Analysis and Design of 1, 000+ Multiple RFID Link) 4.1 Overview N=scTH-CDMAscTDMACDMAXID

    lID IDlCRC CRCT

  • 4.2RFID( Effects of Field Disturbance on RFID Links)4.2.1 (Channel Collision in Noise Environment)ID(IDER)

  • 4.2.2 (Capacity of Simultaneous Recognition)Reader=1Tags=2000SNR=20dB(communication channels (s c)) = 4, 096, 8, 192, 16, 384, 32, 768(re-transmissions)= 9, 4, 21Tt = 400 ms

  • s c=4096=9IDERs c=32,768=1IDERIDER

  • 4.2.3 (Adjusting Thresholds among Correlators)(thresholds)(demultiplex)IDIDIDER

  • CRC(NEID)

  • 4.2.4 TDMA/CDMA(Channel Distribution of TDMA and CDMA)IDER/NEIDTDMA/CDMACDMAIDERTDMACDMACDMA =64TDMA=64.

  • 4.3 Back-End Design for Robust RFID LinksRFID

  • (1) ID(ROM for ID storage) (2) (PRSG for channel assignment) (3)CDMA (a CDMA modulator)(4) TDMA(a TDMA slot controller) (5) CRC(a CRC encoder)

  • 5. ConclusionRFID(built rapid-prototype simulator)RFID(thresholding adjustment)