Code division multiple access/pulse position modulation ultra-wideband radio frequency identification for Internet of Things: concept and analysis

Authors:
Zhi Zhang;Zhonghai Lu;Qiang Chen;Xiaolang Yan;Li-Rong Zheng
Affiliations:
Institute of VLSI Design, Zhejiang University, Hangzhou, 310027, China and iPack VINN Excellence Center, Royal Institute of Technology (KTH), Stockholm, 16440, Sweden;iPack VINN Excellence Center, Royal Institute of Technology (KTH), Stockholm, 16440, Sweden;iPack VINN Excellence Center, Royal Institute of Technology (KTH), Stockholm, 16440, Sweden;Institute of VLSI Design, Zhejiang University, Hangzhou, 310027, China;iPack VINN Excellence Center, Royal Institute of Technology (KTH), Stockholm, 16440, Sweden
Venue:
International Journal of Communication Systems
Year:
2012

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Abstract

Radio frequency identification (RFID) is a compelling technology for Internet of Things (IoT). Ultra-wideband (UWB) technology is one promising wireless technique for future RFID, especially for high-throughput sensing applications. On-off keying UWB RFID system provides high pulse rate but suffers severe collisions that limit the system throughput. This paper proposes to utilize low pulse rate code division multiple access/pulse position modulation UWB in the tag-to-reader link to provide multiple tag access capability and build a high-throughput RFID system for IoT. We analyze asynchronous matched filter receiver and decorrelating receiver for multi-tag detection and design an effective medium access control scheme to optimize the network throughput. We propose an effective dynamic frame size adjustment algorithm on the basis of theoretical analysis and determine the preferable length of Gold codes. With a similar data rate, the throughput of the proposed system using the decorrelating receiver is 8.6 times higher than that of the electronic product code class 1 generation 2 system. Only using 1/10 pulse rate and 1/15 data rate, the proposed system outperforms the on-off keying UWB RFID system 1.4 times in terms of throughput. Copyright © 2012 John Wiley & Sons, Ltd. (This paper proposes to utilize low pulse rate code division multiple access/pulse position modulation ultra-wideband (UWB) radio in the tag-to-reader link in a radio frequency identification (RFID) system. We analyze asynchronous matched filter receiver and decorrelating receiver for multi-tag detection, design an effective medium access control scheme and determine the preferable length of Gold codes. The proposed system outperforms the electronic product code class 1 generation 2 system and the on-off keying UWB RFID system in terms of throughput.)