A Widely Linear MMSE Anti-Collision Method for Multi-Antenna RFID Readers
| Autor: | Wenjiang Pei, Wei Deng, Yili Xia, Wang Kai, Zhe Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Computer science
business.industry Multi antenna 020206 networking & telecommunications 02 engineering and technology Collision Computer Science Applications Modeling and Simulation 0202 electrical engineering electronic engineering information engineering Electronic engineering Radio-frequency identification Electrical and Electronic Engineering business Throughput (business) Degradation (telecommunications) |
| Zdroj: | IEEE Communications Letters. 23:644-647 |
| ISSN: | 2373-7891 1089-7798 |
| DOI: | 10.1109/lcomm.2019.2902545 |
| Popis: | In a multi-tag radio frequency identification (RFID) system, signals sent from different tags are likely to interfere with others, leading to a degradation in the transmission quality. To solve this problem, a novel widely linear minimum-mean-square-error (WLMMSE) anti-collision method is proposed by taking into account the improper second-order statistics of backscattered tag signals, which result from the quadrature nature of RFID readers. The proposed method provides an efficient means to separate multiple overlapping tag signals within a single time slot and can be easily integrated into multi-antenna RFID systems to improve their throughput. Its modeling advantages over conventional linear model-based signal recovery methods are illustrated by both the simulations and real-world experiments. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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