Idle Slots Skipped Mechanism based Tag Identification Algorithm with Enhanced Collision Detection

Su, Jian; Xu, Ruoyu; Yu, Shengping; Wang, BaoWei; Wang, Jiuru

doi:10.3837/tiis.2020.05.024

Cited by 19 publications

(3 citation statements)

References 26 publications

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“…MAC-layer collision resolution adopts random multiple access method [3][4][5]，where each tag selects transmission time slot randomly, and if a collision occurs, the signal will be retransmitted again. However, the MAC-layer method regards the collision time slot as an invalid one.…”

Section: Signal Separation and Decodingmentioning

confidence: 99%

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A Dictionary-Matrix Separation and Viterbi Decoding for Miller Code in RFID Tag Collision

Zeng

Ding

2023

Wireless Pers Commun

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With the help of perception technologies such as Radio Frequency Identification (RFID), information interaction will expand from communication devices to various non-communication items in daily life, and the era of ubiquitous personal communication networks may come. In an Ultra High Frequency (UHF) RFID system, however, signal collision often occurs during multiple tags identification. The collision resolution across a Media Access Control (MAC) layer and a physical layer can significantly improve communication efficiency. As a delay code, Miller code is often used in the UHF RFID system. Because its baseband signal has more subcarriers, it has higher anti-noise performance. This paper adopt the cross-layer resolution and proposes a new collision separation and decoding algorithm for the Miller code of the RFID system. This algorithm separates the collision signal by clustering and dictionary matrix firstly, and then decode the separated signal by Viterbi method. In this simulation, we generate a set of simulation data to evaluate the proposed algorithm. The simulation results show that the separation efficiency of the proposed algorithm is about 25% higher than that of traditional methods. Furthermore, we evaluate the performance of the proposed algorithm in this measured data, and obtain 8% higher system throughput than a traditional dynamic ALOHA system.

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Section: Signal Separation and Decodingmentioning

confidence: 99%

“…Since tags transmit data sharing the same wireless channel, tag collisions are unavoidable. Anti-collision is one of the main techniques to resolve the collision, and is generally performed at the Media Access Control (MAC) layer [3][4][5]. When the collision occurs, the tag signal has to retransmitted.…”

mentioning

confidence: 99%

A Dictionary-Matrix Separation and Viterbi Decoding for Miller Code in RFID Tag Collision

Zeng

Ding

2023

Wireless Pers Commun

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“…At present, there have been a lot of researches on indoor positioning. Most indoor positioning systems use the RSSI based on the Wi-Fi signal [14][15][16]. There are usually two processing methods.…”

Section: Introductionmentioning

confidence: 99%

Traffic Flow Sensing Using Wireless Signals

2021

KSII TIIS

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Research on Night Tourism Recommendation Based on Intelligent Image Processing Technology

Fan

2021

Scientific Programming

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The rapid development of the tourism industry and the Internet era has led to an increasingly severe problem of travel information overload, and travel recommendation methods are essential to solving the information overload problem. Traditional recommendation algorithms only target common travel scenarios during the daytime, combining the ratings and necessary attributes between users and items to calculate similarity for a recommendation. Still, the research on night travel recommendations is one of the few scenarios that needs to be explored urgently. This paper, based on histogram equalization, achieves better experimental results on image enhancement, combines convolutional neural network technology with night image and text comment feature extraction technology, and evaluates the resulting error with mean absolute error (MAE). This paper presents the first night travel recommendation system. It compares it with the traditional collaborative filtering method, and the model proposed in this paper can effectively reduce the prediction error.

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Idle Slots Skipped Mechanism based Tag Identification Algorithm with Enhanced Collision Detection

Cited by 19 publications

References 26 publications

A Dictionary-Matrix Separation and Viterbi Decoding for Miller Code in RFID Tag Collision

A Dictionary-Matrix Separation and Viterbi Decoding for Miller Code in RFID Tag Collision

Traffic Flow Sensing Using Wireless Signals

Research on Night Tourism Recommendation Based on Intelligent Image Processing Technology

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