Code division multiple access/pulse position modulation ultra-wideband radio frequency identification for Internet of Things: concept and analysis
2012 (English)In: International Journal of Communication Systems, ISSN 1074-5351, E-ISSN 1099-1131, Vol. 25, no 9, 1103-1121 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2012. Vol. 25, no 9, 1103-1121 p.
CDMA-PPM UWB, RFID, Internet of Things, detection scheme, medium access control, performance analysis
IdentifiersURN: urn:nbn:se:kth:diva-103143DOI: 10.1002/dac.2312ISI: 000308080800002ScopusID: 2-s2.0-84865621915OAI: oai:DiVA.org:kth-103143DiVA: diva2:559388
QC 201210092012-10-092012-10-042013-04-09Bibliographically approved