Pub Date : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733482
A. Aldridge, Eli Barnes, Cindy L. Bethel, Daniel W. Carruth, M. Koctúrová, Matus Pleva, J. Juhár
By evaluating the OpenBCI Ultracortex Mark IV EEG headset’s affordability, accessibility, and accuracy, it can be compared to other commercial- and medical-grade EEGs that have been evaluated previously. Nine participants used the Ultracortex Mark IV for the P300 Speller classification task, with the accuracy being measured along with the time required to set up the Mark IV, the participants’ comfort, and the participants’ perceived ease of setup. These results were then compared to previous evaluations of other EEG headsets. The OpenBCI Ultracortex Mark IV’s cost-effectiveness ratio is relatively low compared to the other EEG systems, and its ease of use and speed of set up are notably better than the other headsets being compared.
通过评估OpenBCI ultrortex Mark IV脑电图耳机的可负担性、可及性和准确性，可以将其与之前评估过的其他商业和医疗级脑电图设备进行比较。9名参与者使用ultrortex Mark IV来完成P300拼写者分类任务，准确率与设置Mark IV所需的时间、参与者的舒适度以及参与者对设置的感知程度一起被测量。然后将这些结果与之前对其他脑电图耳机的评估进行比较。与其他脑电图系统相比，OpenBCI ultrortex Mark IV的成本效益比相对较低，其易用性和设置速度明显优于其他被比较的耳机。
{"title":"Accessible Electroencephalograms (EEGs): A Comparative Review with OpenBCI’s Ultracortex Mark IV Headset","authors":"A. Aldridge, Eli Barnes, Cindy L. Bethel, Daniel W. Carruth, M. Koctúrová, Matus Pleva, J. Juhár","doi":"10.1109/RADIOELEK.2019.8733482","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733482","url":null,"abstract":"By evaluating the OpenBCI Ultracortex Mark IV EEG headset’s affordability, accessibility, and accuracy, it can be compared to other commercial- and medical-grade EEGs that have been evaluated previously. Nine participants used the Ultracortex Mark IV for the P300 Speller classification task, with the accuracy being measured along with the time required to set up the Mark IV, the participants’ comfort, and the participants’ perceived ease of setup. These results were then compared to previous evaluations of other EEG headsets. The OpenBCI Ultracortex Mark IV’s cost-effectiveness ratio is relatively low compared to the other EEG systems, and its ease of use and speed of set up are notably better than the other headsets being compared.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127623657","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733448
Jan Kufa, T. Kratochvil
Interest in multimedia content is rapidly increasing. In recent years there was extremely progress in improving Quality of Experience (QoE) in multimedia systems. As the next generation of TV, Ultra High Definition Television (Ultra HDTV) is attracting more and more people’s attention. Ultra HDTV can provide a new viewer experience. In the case of HDTV, the observation distance plays an important role. If the observer sits further away from the television, that is the optimal viewing distance, and he may lose the benefit of HDTV. The results showed that for the case of non-optimal viewing distance, viewer’s preference of Ultra HD resolution is not significantly higher. The result for the optimal viewing distance is very dependent on the video content and the bitrate. In our case, base on a questionnaire, it was found that 82 % of respondents owning Ultra HDTV do not sit at optimal distance.
人们对多媒体内容的兴趣正在迅速增加。近年来，在提高多媒体系统的体验质量(QoE)方面取得了巨大进展。超高清电视(Ultra High Definition Television，简称Ultra HDTV)作为下一代电视，正受到越来越多人们的关注。超高清电视可以提供一种新的观看体验。在高清电视中，观测距离起着重要的作用。如果观察者坐得离电视更远，那是最佳的观看距离，他可能会失去高清电视的好处。结果表明，在非最佳观看距离的情况下，观看者对超高清分辨率的偏好并没有显著提高。最佳观看距离的结果很大程度上取决于视频内容和比特率。在我们的案例中，基于一份调查问卷，发现82%拥有超高清电视的受访者没有坐在最佳距离。
{"title":"Visual Quality Assessment Considering Ultra HD, Full HD Resolution and Viewing Distance","authors":"Jan Kufa, T. Kratochvil","doi":"10.1109/RADIOELEK.2019.8733448","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733448","url":null,"abstract":"Interest in multimedia content is rapidly increasing. In recent years there was extremely progress in improving Quality of Experience (QoE) in multimedia systems. As the next generation of TV, Ultra High Definition Television (Ultra HDTV) is attracting more and more people’s attention. Ultra HDTV can provide a new viewer experience. In the case of HDTV, the observation distance plays an important role. If the observer sits further away from the television, that is the optimal viewing distance, and he may lose the benefit of HDTV. The results showed that for the case of non-optimal viewing distance, viewer’s preference of Ultra HD resolution is not significantly higher. The result for the optimal viewing distance is very dependent on the video content and the bitrate. In our case, base on a questionnaire, it was found that 82 % of respondents owning Ultra HDTV do not sit at optimal distance.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130435615","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733559
R. Sotner, J. Jerabek, L. Langhammer, L. Polak, W. Jaikla, P. Prommee
This paper presents and verifies a method for rescalability of operational bandwidth in constant phase devices (two-port elements, two-port transfer blocks). Most importantly, in comparison with a standard approach, it allows to utilize suitable values of capacitance in the case of operation at low-frequency bands. The capacitance multipliers based on a controllable variable gain amplifier are implemented in examples of simple fractional-order systems (two-port integrators). These examples consist of novel bilinear immittances with independently settable zero and pole frequency coordinates, based on widespread commercially available current conveyors of second generation. The capacitance multiplier extends features of the bilinear immittance and full implementation of the system. PSpice simulations, using off-the-shelf elements, confirm operability of the proposed concept.
{"title":"Operational Frequency Bandwidth Rescalable Implementations of Constant Phase Devices","authors":"R. Sotner, J. Jerabek, L. Langhammer, L. Polak, W. Jaikla, P. Prommee","doi":"10.1109/RADIOELEK.2019.8733559","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733559","url":null,"abstract":"This paper presents and verifies a method for rescalability of operational bandwidth in constant phase devices (two-port elements, two-port transfer blocks). Most importantly, in comparison with a standard approach, it allows to utilize suitable values of capacitance in the case of operation at low-frequency bands. The capacitance multipliers based on a controllable variable gain amplifier are implemented in examples of simple fractional-order systems (two-port integrators). These examples consist of novel bilinear immittances with independently settable zero and pole frequency coordinates, based on widespread commercially available current conveyors of second generation. The capacitance multiplier extends features of the bilinear immittance and full implementation of the system. PSpice simulations, using off-the-shelf elements, confirm operability of the proposed concept.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116694855","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733545
Erik Herceg, T. Urbanec
This article deals with the comparison of class C and class E amplifiers designed with an identical transistor, substrate, and frequency. Both types of amplifiers have a theoretical efficiency of 100 %; however, more attention is paid to class E amplifier, because of its complexity and difficulty of design. The efficiency of both classes reached over 75 %. The working frequency of designed amplifiers was 435 MHz using lumped components. The topology of the class C amplifier is typical with input and output filter matching at the fundamental frequency, and the design of the class E amplifier is with shunt capacitance complemented with series resonant circuit fundamentally tuned. Class E amplifier with a shunt capacitance designed with E-pHEMT transistor is unique, because of small drain voltage which has a distinct influence on switching capacitor value which resulted in hundredths to units of picofarads. The amplifiers were simulated, manufactured and measured results were compared. The class E amplifier is therefore presented at such frequency where transmission lines cannot be used because of their length and even the lumped resonators tuned to higher harmonics frequency start to be undesignable.
{"title":"Comparison of Class C and High Efficiency Class E Amplifiers at 435 MHz","authors":"Erik Herceg, T. Urbanec","doi":"10.1109/RADIOELEK.2019.8733545","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733545","url":null,"abstract":"This article deals with the comparison of class C and class E amplifiers designed with an identical transistor, substrate, and frequency. Both types of amplifiers have a theoretical efficiency of 100 %; however, more attention is paid to class E amplifier, because of its complexity and difficulty of design. The efficiency of both classes reached over 75 %. The working frequency of designed amplifiers was 435 MHz using lumped components. The topology of the class C amplifier is typical with input and output filter matching at the fundamental frequency, and the design of the class E amplifier is with shunt capacitance complemented with series resonant circuit fundamentally tuned. Class E amplifier with a shunt capacitance designed with E-pHEMT transistor is unique, because of small drain voltage which has a distinct influence on switching capacitor value which resulted in hundredths to units of picofarads. The amplifiers were simulated, manufactured and measured results were compared. The class E amplifier is therefore presented at such frequency where transmission lines cannot be used because of their length and even the lumped resonators tuned to higher harmonics frequency start to be undesignable.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117292494","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733549
Jiří Miloš, L. Polak, S. Rozum
Recently, the study of coexistence between Long Term Evolution (LTE) and Wireless Fidelity (Wi-Fi) systems in common Industrial, Scientific and Medical (ISM) bands is a hot topic. For such a study, an appropriate measurement setup with reliable evaluation process is essential. In this paper, we present a simple laboratory measurement testbed to measure and evaluate coexistence scenarios of LTE-Downlink (LTE-DL) and Wi-Fi systems in indoor environment. Completely automated measurement of the objective parameters on the physical layer (PHY) level, real-time evaluation of the results and flexibility are the main advantages of the proposed concept. Different coexistence scenarios between LTE-DL and Wi-Fi (using IEEE 802.11n/ac technologies) in the 2.4 GHz ISM band were selected to validate our proposed measurement setup in an indoor environment. At the evaluation of the obtained results it was observed, that the LTE-DL system influenced by IEEE 802.11n/ac systems, similarly IEEE 802.11n/ac influenced by LTE-DL, has different performance.
{"title":"Analysis of Indoor LTE-DL/Wi-Fi Coexistence Scenarios with Automated Measurement Testbed","authors":"Jiří Miloš, L. Polak, S. Rozum","doi":"10.1109/RADIOELEK.2019.8733549","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733549","url":null,"abstract":"Recently, the study of coexistence between Long Term Evolution (LTE) and Wireless Fidelity (Wi-Fi) systems in common Industrial, Scientific and Medical (ISM) bands is a hot topic. For such a study, an appropriate measurement setup with reliable evaluation process is essential. In this paper, we present a simple laboratory measurement testbed to measure and evaluate coexistence scenarios of LTE-Downlink (LTE-DL) and Wi-Fi systems in indoor environment. Completely automated measurement of the objective parameters on the physical layer (PHY) level, real-time evaluation of the results and flexibility are the main advantages of the proposed concept. Different coexistence scenarios between LTE-DL and Wi-Fi (using IEEE 802.11n/ac technologies) in the 2.4 GHz ISM band were selected to validate our proposed measurement setup in an indoor environment. At the evaluation of the obtained results it was observed, that the LTE-DL system influenced by IEEE 802.11n/ac systems, similarly IEEE 802.11n/ac influenced by LTE-DL, has different performance.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134375460","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733492
Matus Pleva, J. Juhár, S. Ondáš, Christopher R. Hudson, Cindy L. Bethel, Daniel W. Carruth
Voice recognition software is a widely adopted tool in a variety of task domains. However, several mission critical systems, which have high security demands cannot allow outside connections to the remote systems that provide voice recognition capabilities. This presents a problem for modern day voice recognition, which is largely cloud based. To address this issue, we leveraged Julius as an offline phoneme-based voice recognizer in order to incorporate voice recognition software into robotic systems for law enforcement officers. In order to address the difficulties that officers with a variety of dialects have when interacting with a phoneme-based voice recognizer, a training tool was developed. This paper examines the lessons learned from the latest implementation of the training tool over the course of several voice-enabled Human-Robot Interaction (HRI) experiments. The majority of these users were novices who had little to no experience with voice recognition software. Interactions were completed at three events in Košice, Slovakia: (1) Museum Night 2018, (2) a private company demonstration, and (3) Technical University of Košice’s Summer Kids University (TUKE for kids) demonstration. The results of the user interaction evaluations highlighted that, through training, novice users could learn to interact with an offline voice recognition system after a short period of time by operating a simulated robotic system.
语音识别软件是一种广泛应用于各种任务领域的工具。然而，一些具有高安全性要求的关键任务系统不允许外部连接到提供语音识别功能的远程系统。这给现代语音识别带来了一个问题，它主要是基于云的。为了解决这个问题，我们利用Julius作为一个离线的基于电话的语音识别器，以便将语音识别软件集成到执法人员的机器人系统中。为解决操不同方言的警务人员在使用基于音素的语音识别器时遇到的困难，我们开发了一套培训工具。本文研究了在几个支持语音的人机交互(HRI)实验过程中，从训练工具的最新实施中吸取的经验教训。这些用户中的大多数都是新手，对语音识别软件几乎没有经验。互动在斯洛伐克Košice的三个活动中完成:(1)2018年博物馆之夜，(2)私人公司演示，以及(3)Košice技术大学夏季儿童大学(TUKE for Kids)演示。用户交互评估的结果强调，通过培训，新手用户可以通过操作模拟机器人系统，在短时间内学会与离线语音识别系统交互。
{"title":"Novice User Experiences with a Voice-Enabled Human-Robot Interaction Tool","authors":"Matus Pleva, J. Juhár, S. Ondáš, Christopher R. Hudson, Cindy L. Bethel, Daniel W. Carruth","doi":"10.1109/RADIOELEK.2019.8733492","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733492","url":null,"abstract":"Voice recognition software is a widely adopted tool in a variety of task domains. However, several mission critical systems, which have high security demands cannot allow outside connections to the remote systems that provide voice recognition capabilities. This presents a problem for modern day voice recognition, which is largely cloud based. To address this issue, we leveraged Julius as an offline phoneme-based voice recognizer in order to incorporate voice recognition software into robotic systems for law enforcement officers. In order to address the difficulties that officers with a variety of dialects have when interacting with a phoneme-based voice recognizer, a training tool was developed. This paper examines the lessons learned from the latest implementation of the training tool over the course of several voice-enabled Human-Robot Interaction (HRI) experiments. The majority of these users were novices who had little to no experience with voice recognition software. Interactions were completed at three events in Košice, Slovakia: (1) Museum Night 2018, (2) a private company demonstration, and (3) Technical University of Košice’s Summer Kids University (TUKE for kids) demonstration. The results of the user interaction evaluations highlighted that, through training, novice users could learn to interact with an offline voice recognition system after a short period of time by operating a simulated robotic system.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"2019 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116970848","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733574
P. Skryja, Marek Novák, P. Barcik
In this paper a multichannel data logger for off-line analysis of the signals from Free Space Optics (FSO) terminal is presented. In comparison with a common oscilloscope, the system offers long-term and fast sampling of the signals from 8 channels in parallel. Within the paper the principles of sampling and storing data are described. A practical implementation of 8-channel sampling system with sample rate of 1Msps and 16bit resolution into the FSO terminal is introduced. The communication between the analog front-end and the Beaglebone Black platform is specified. The last part of the paper deals with limitations of the system.
{"title":"A Multichannel Data Logger for Monitoring FSO Terminal","authors":"P. Skryja, Marek Novák, P. Barcik","doi":"10.1109/RADIOELEK.2019.8733574","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733574","url":null,"abstract":"In this paper a multichannel data logger for off-line analysis of the signals from Free Space Optics (FSO) terminal is presented. In comparison with a common oscilloscope, the system offers long-term and fast sampling of the signals from 8 channels in parallel. Within the paper the principles of sampling and storing data are described. A practical implementation of 8-channel sampling system with sample rate of 1Msps and 16bit resolution into the FSO terminal is introduced. The communication between the analog front-end and the Beaglebone Black platform is specified. The last part of the paper deals with limitations of the system.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131506290","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733585
Arslan Ali, G. Fischer
The identification of fake base station (FBS) in a cellular network has become challenging with the development of various software defined radio platforms and mobile standards. This paper, therefore, presents robust statistical approach to detect unique non-linearities based hardware impairments of the transmitter. Employing the fact that power amplifier (PA) of a regular base station (RBS) is a costly and high precision device with a provision of sophisticated digital predistortion (DPD) hardware implementation and in contrary, this DPD based linearization effort is not spent in existing SDR platforms so PA of an SDR based FBS tends to violate the spectral mask and introduces large amplitude and phase errors in the transmitted signal compared to the RBS. At first, a second order symbol-based error vector magnitude (EVM) approach is triggered at the user equipment (UE) to measure the non-linearity induced by the PA of various SDR based FBS. Afterward, a higher fourth order moment i.e. kurtosis approach has been proposed along with the actual measurement results to determine the noise structuredness of the received signal at UE. The kurtosis on magnitude of extracted complex noise cloud is found to be a strong indicator to identify the FBS.
{"title":"Symbol Based Statistical RF Fingerprinting for Fake Base Station Identification","authors":"Arslan Ali, G. Fischer","doi":"10.1109/RADIOELEK.2019.8733585","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733585","url":null,"abstract":"The identification of fake base station (FBS) in a cellular network has become challenging with the development of various software defined radio platforms and mobile standards. This paper, therefore, presents robust statistical approach to detect unique non-linearities based hardware impairments of the transmitter. Employing the fact that power amplifier (PA) of a regular base station (RBS) is a costly and high precision device with a provision of sophisticated digital predistortion (DPD) hardware implementation and in contrary, this DPD based linearization effort is not spent in existing SDR platforms so PA of an SDR based FBS tends to violate the spectral mask and introduces large amplitude and phase errors in the transmitted signal compared to the RBS. At first, a second order symbol-based error vector magnitude (EVM) approach is triggered at the user equipment (UE) to measure the non-linearity induced by the PA of various SDR based FBS. Afterward, a higher fourth order moment i.e. kurtosis approach has been proposed along with the actual measurement results to determine the noise structuredness of the received signal at UE. The kurtosis on magnitude of extracted complex noise cloud is found to be a strong indicator to identify the FBS.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125532023","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733537
P. Sedláček, M. Slanina, Pavel Mašek
This paper focuses on the new standard of IEEE 802.15.4z, which is seeking to enhance the already existing standards for the Impulse Radio Ultra - Wideband (UWB) technology. We describe the current state in regards of standardization of the UWB technology and also the proposed changes to be made. In the last part, we compare the new enhancements to the existing standards and describe the proposed improvements to be made in ranging capabilities, power consumption and security for both HRP and LRP UWB PHYs while also naming several practical applications where these new enhancements will be used.
{"title":"An Overview of the IEEE 802.15.4z Standard its Comparison and to the Existing UWB Standards","authors":"P. Sedláček, M. Slanina, Pavel Mašek","doi":"10.1109/RADIOELEK.2019.8733537","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733537","url":null,"abstract":"This paper focuses on the new standard of IEEE 802.15.4z, which is seeking to enhance the already existing standards for the Impulse Radio Ultra - Wideband (UWB) technology. We describe the current state in regards of standardization of the UWB technology and also the proposed changes to be made. In the last part, we compare the new enhancements to the existing standards and describe the proposed improvements to be made in ranging capabilities, power consumption and security for both HRP and LRP UWB PHYs while also naming several practical applications where these new enhancements will be used.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115145754","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 : 2019-04-16DOI: 10.1109/RADIOELEK.2019.8733477
Imran M. Saied, T. Arslan
This paper presents the development of a radar-based microwave head imaging algorithm that is used for detecting strokes, tumors, and other anomalies that form in the brain. The imaging algorithm is based off a previously proposed microwave imaging in space-time algorithm (MIST) that was implemented for breast cancer detection. Simulated data was obtained from a wearable antenna array system and processed in the modified MIST algorithm. In addition, experiments were also carried out to test the imaging algorithm on data obtained from the fabricated sensors on phantoms that represented a human brain model with diseases. Resulting images from the algorithm are of good quality and provides a clearer indication of where the diseases are located in the brain. In addition, the algorithm is also able to display anomalies that are located in deeper regions of the brain. This provides a foundation for future work to be developed in building a complete system that utilises a wearable microwave sensor array and imaging algorithm for non-invasive head imaging systems.
{"title":"Microwave Imaging Algorithm for Detecting Brain Disorders","authors":"Imran M. Saied, T. Arslan","doi":"10.1109/RADIOELEK.2019.8733477","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2019.8733477","url":null,"abstract":"This paper presents the development of a radar-based microwave head imaging algorithm that is used for detecting strokes, tumors, and other anomalies that form in the brain. The imaging algorithm is based off a previously proposed microwave imaging in space-time algorithm (MIST) that was implemented for breast cancer detection. Simulated data was obtained from a wearable antenna array system and processed in the modified MIST algorithm. In addition, experiments were also carried out to test the imaging algorithm on data obtained from the fabricated sensors on phantoms that represented a human brain model with diseases. Resulting images from the algorithm are of good quality and provides a clearer indication of where the diseases are located in the brain. In addition, the algorithm is also able to display anomalies that are located in deeper regions of the brain. This provides a foundation for future work to be developed in building a complete system that utilises a wearable microwave sensor array and imaging algorithm for non-invasive head imaging systems.","PeriodicalId":336454,"journal":{"name":"2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130306254","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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