無線干擾對RFID多標簽識別過程影響的研究
發(fā)布時間：2018-07-28 18:37
【摘要】：射頻識別(Radio Frequency Identification)是物聯(lián)網(wǎng)中的核心部分,是實現(xiàn)感知網(wǎng)絡(luò)的關(guān)鍵技術(shù)。近年來隨著互聯(lián)網(wǎng)、移動互聯(lián)網(wǎng)的快速進步和普及,RFID相關(guān)應(yīng)用也得到了前所未有的發(fā)展,但是隨著RFID系統(tǒng)的大規(guī)模部署以及像WLAN、WPAN(Bluetooth、ZigBee等)這樣無線網(wǎng)絡(luò)的密集應(yīng)用的出現(xiàn),勢必會對現(xiàn)有的RFID系統(tǒng)產(chǎn)生一定的無線干擾。本論文針對RFID系統(tǒng)中存在的無線干擾問題進行了分析,采用數(shù)學(xué)建模理論分析、實驗測量、仿真驗證相結(jié)合的研究方法。本文的主要內(nèi)容以及創(chuàng)新之處如下:第一,分析并研究了 RFID系統(tǒng)大規(guī)模部署場景下存在的無線干擾,建立了基于統(tǒng)計分布的干擾模型,創(chuàng)新性地提出了 IR參數(shù),為定量分析無線干擾下RFID系統(tǒng)的性能提供了理論參考。針對于FCC和CEPT兩大國際標準,又進一步修改了干擾模型,并成功用于多RFID讀寫器場景下容量的估計。第二、分析了當前基于EPC協(xié)議的多標簽識別算法,在選擇Q值算法和Poisson算法的基礎(chǔ)上提出了一種新型的多標簽識別算法,提升了 RFID系統(tǒng)的多標簽識別效率,特別是在大規(guī)模標簽識別中,新算法更具優(yōu)越性。第三、分析了無線干擾源下RFID系統(tǒng)性能表現(xiàn),對以往研究在該問題上的模糊性進行了補充和研究,通過對無源標簽芯片電路以及后向散射鏈路進行分析,定量的給出了無線干擾模型。第四、對RFID系統(tǒng)與其他無線通信系統(tǒng)的干擾問題進行了詳細的分析,對RFID與Bluetooth以及WLAN的干擾問題進行了建模分析,并通過OPNET和MATLAB仿真與理論分析值對比驗證了模型。本文研究了 RFID系統(tǒng)存在的無線干擾問題并結(jié)合關(guān)鍵技術(shù)總結(jié)并提出一些有意義的結(jié)論,補充了 RFID干擾問題研究的不足,為進一步研究RFID系統(tǒng)可能存在的干擾問題提供了理論參考。
[Abstract]:Radio frequency identification (Radio Frequency Identification) is the core part of the Internet of things and the key technology to realize the perceptual network. In recent years, with the rapid progress of the Internet, mobile Internet and the popularity of RFID applications have been unprecedented development, but with the large-scale deployment of RFID systems and the emergence of wireless networks such as WLAN WPAN (Bluetooth ZigBee, etc.), It is bound to have certain wireless interference to the existing RFID system. In this paper, the problem of wireless interference in RFID system is analyzed, and the research method of mathematical modeling theory, experimental measurement and simulation verification is adopted. The main contents and innovations of this paper are as follows: first, the wireless interference in large-scale deployment of RFID system is analyzed and studied, and the interference model based on statistical distribution is established, and the IR parameters are proposed innovatively. It provides a theoretical reference for quantitative analysis of the performance of RFID system under wireless interference. Aiming at the two international standards of FCC and CEPT, the interference model is further modified, and it is successfully used to estimate the capacity of multiple RFID reader scenarios. Secondly, this paper analyzes the current multi-label recognition algorithm based on EPC protocol, and proposes a new multi-label recognition algorithm based on Q-value algorithm and Poisson algorithm, which improves the efficiency of multi-label recognition in RFID system. Especially in large scale label recognition, the new algorithm has more advantages. Thirdly, the performance of RFID system under the wireless interference source is analyzed, and the fuzziness of the previous research is supplemented and studied. The passive tag chip circuit and the backscatter link are analyzed. The wireless interference model is given quantitatively. Fourthly, the interference problem between RFID system and other wireless communication systems is analyzed in detail, the interference problem between RFID, Bluetooth and WLAN is modeled and analyzed, and the model is verified by OPNET and MATLAB simulation and theoretical analysis. In this paper, the problem of wireless interference in RFID system is studied, and some meaningful conclusions are put forward in combination with the key technology, which complements the deficiency of the research on RFID interference problem. It provides a theoretical reference for the further study of the possible interference problems in RFID systems.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP391.44
本文編號：2151241
[Abstract]:Radio frequency identification (Radio Frequency Identification) is the core part of the Internet of things and the key technology to realize the perceptual network. In recent years, with the rapid progress of the Internet, mobile Internet and the popularity of RFID applications have been unprecedented development, but with the large-scale deployment of RFID systems and the emergence of wireless networks such as WLAN WPAN (Bluetooth ZigBee, etc.), It is bound to have certain wireless interference to the existing RFID system. In this paper, the problem of wireless interference in RFID system is analyzed, and the research method of mathematical modeling theory, experimental measurement and simulation verification is adopted. The main contents and innovations of this paper are as follows: first, the wireless interference in large-scale deployment of RFID system is analyzed and studied, and the interference model based on statistical distribution is established, and the IR parameters are proposed innovatively. It provides a theoretical reference for quantitative analysis of the performance of RFID system under wireless interference. Aiming at the two international standards of FCC and CEPT, the interference model is further modified, and it is successfully used to estimate the capacity of multiple RFID reader scenarios. Secondly, this paper analyzes the current multi-label recognition algorithm based on EPC protocol, and proposes a new multi-label recognition algorithm based on Q-value algorithm and Poisson algorithm, which improves the efficiency of multi-label recognition in RFID system. Especially in large scale label recognition, the new algorithm has more advantages. Thirdly, the performance of RFID system under the wireless interference source is analyzed, and the fuzziness of the previous research is supplemented and studied. The passive tag chip circuit and the backscatter link are analyzed. The wireless interference model is given quantitatively. Fourthly, the interference problem between RFID system and other wireless communication systems is analyzed in detail, the interference problem between RFID, Bluetooth and WLAN is modeled and analyzed, and the model is verified by OPNET and MATLAB simulation and theoretical analysis. In this paper, the problem of wireless interference in RFID system is studied, and some meaningful conclusions are put forward in combination with the key technology, which complements the deficiency of the research on RFID interference problem. It provides a theoretical reference for the further study of the possible interference problems in RFID systems.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP391.44
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