Pub Date : 2019-04-01DOI: 10.1109/RADIOELEK.2019.8733514
G. Mikó, A. Németh
A distributed antenna system (DAS) is used in large buildings, tunnels to provide cellular network coverage for indoor users. Currently popular analogue radio over fiber systems are tending to lose popularity against digitally operating systems. In this paper analogue and digital solutions are analyzed and compared in terms of achievable signal quality. Later a digital DAS solution is presented based on a high speed signal processing platform which may serve as a multi-band digital repeater system.
{"title":"Multi-Band Digital Distributed Antenna System","authors":"G. Mikó, A. Németh","doi":"10.1109/RADIOELEK.2019.8733514","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733514","url":null,"abstract":"A distributed antenna system (DAS) is used in large buildings, tunnels to provide cellular network coverage for indoor users. Currently popular analogue radio over fiber systems are tending to lose popularity against digitally operating systems. In this paper analogue and digital solutions are analyzed and compared in terms of achievable signal quality. Later a digital DAS solution is presented based on a high speed signal processing platform which may serve as a multi-band digital repeater system.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131422952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-01DOI: 10.1109/RADIOELEK.2019.8733445
V. Bezruk, S. Ivanenko, Oleksii Fedorov, Z. Nemec, J. Pidanic
Results of investigation into unconventional methods for detection and recognition of signals in the HF frequency bands when performing radio monitoring are presented. The studies were carried out by simulation with real signals and noise typical for the frequency bands.
{"title":"Detection and Recognition of Signals in HF Radio Monitoring","authors":"V. Bezruk, S. Ivanenko, Oleksii Fedorov, Z. Nemec, J. Pidanic","doi":"10.1109/RADIOELEK.2019.8733445","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733445","url":null,"abstract":"Results of investigation into unconventional methods for detection and recognition of signals in the HF frequency bands when performing radio monitoring are presented. The studies were carried out by simulation with real signals and noise typical for the frequency bands.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132944447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-01DOI: 10.1109/RADIOELEK.2019.8733491
Natalija Chmelařová, P. Chmelar, L. Rejfek
This paper deals with the fine plane estimation. For a plane detection the level connected component labeling algorithm is used. The precise plane position is determined by the plane’s points histogram in the scanning dimension. Up till now, the final plane’s range has been selected manually by a parameter. Plane presence in an input point cloud represents the higher points’ concentration in the scanning dimension, higher than average value. The concentration decreases on both sides from a local maximum value. This paper presents the algorithm of the elbows’ position estimation for the optimal plane’s points range expression. The experimental part shows practical results of several examples and gives recommendations for parameters setting.
{"title":"The Fine Plane Range Estimation From Point Cloud","authors":"Natalija Chmelařová, P. Chmelar, L. Rejfek","doi":"10.1109/RADIOELEK.2019.8733491","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733491","url":null,"abstract":"This paper deals with the fine plane estimation. For a plane detection the level connected component labeling algorithm is used. The precise plane position is determined by the plane’s points histogram in the scanning dimension. Up till now, the final plane’s range has been selected manually by a parameter. Plane presence in an input point cloud represents the higher points’ concentration in the scanning dimension, higher than average value. The concentration decreases on both sides from a local maximum value. This paper presents the algorithm of the elbows’ position estimation for the optimal plane’s points range expression. The experimental part shows practical results of several examples and gives recommendations for parameters setting.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116616007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-01DOI: 10.1109/RADIOELEK.2019.8733510
M. Sokol, P. Galajda, S. Slovák, M. Pecovský
This article describes a design of 4-bit Flash analogue-digital converter (ADC) for Ultra-Wideband (UWB) sensor systems. The ADC cell structure was designed and fabricated in 0.35 µm SiGe BiCMOS technology. Proposed ADC cell achieves up to 1.1 Gs/s with maximum input signal range 1.6 Vpp at 1 MHz. The power consumption of the designed cell is 30 mA from -3.3 V power supply. For basic measurement, the ADC has been directly wires bonded to PCB. The basic measurements are represented by time domain and input-output ADC characteristics. The ADC was primarily designed as a test structure for M-sequence UWB SoC radar.
本文介绍了一种用于超宽带传感器系统的4位Flash模数转换器(ADC)的设计。采用0.35µm SiGe BiCMOS工艺设计和制作ADC单元结构。所提出的ADC单元在1mhz时最高可达1.1 g /s，最大输入信号范围为1.6 Vpp。本设计电池的功耗为30ma，电源为-3.3 V。对于基本测量，ADC已直接连接到PCB上。基本测量由时域和输入输出ADC特性表示。该ADC主要设计为m序列UWB SoC雷达的测试结构。
{"title":"Design of 4-bit Flash ADC Cell for UWB Sensor Systems","authors":"M. Sokol, P. Galajda, S. Slovák, M. Pecovský","doi":"10.1109/RADIOELEK.2019.8733510","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733510","url":null,"abstract":"This article describes a design of 4-bit Flash analogue-digital converter (ADC) for Ultra-Wideband (UWB) sensor systems. The ADC cell structure was designed and fabricated in 0.35 µm SiGe BiCMOS technology. Proposed ADC cell achieves up to 1.1 Gs/s with maximum input signal range 1.6 Vpp at 1 MHz. The power consumption of the designed cell is 30 mA from -3.3 V power supply. For basic measurement, the ADC has been directly wires bonded to PCB. The basic measurements are represented by time domain and input-output ADC characteristics. The ADC was primarily designed as a test structure for M-sequence UWB SoC radar.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116762811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-15DOI: 10.1109/RADIOELEK.2019.8733575
Uddipana Dowerah, Srinivasan Krishnaswamy
We propose a symmetric key homomorphic encryption scheme based on the evaluation of multivariate polynomials over a finite field. The proposed scheme is somewhat homomorphic with respect to addition and multiplication. Further, we define a generalization of the Learning with Errors problem called the Hidden Subspace Membership problem and show that the semantic security of the proposed scheme can be reduced to the hardness of this problem.
{"title":"A Somewhat Homomorphic Encryption Scheme based on Multivariate Polynomial Evaluation","authors":"Uddipana Dowerah, Srinivasan Krishnaswamy","doi":"10.1109/RADIOELEK.2019.8733575","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733575","url":null,"abstract":"We propose a symmetric key homomorphic encryption scheme based on the evaluation of multivariate polynomials over a finite field. The proposed scheme is somewhat homomorphic with respect to addition and multiplication. Further, we define a generalization of the Learning with Errors problem called the Hidden Subspace Membership problem and show that the semantic security of the proposed scheme can be reduced to the hardness of this problem.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132104744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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