2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA)最新文献_第8页

Interface for smart audiovisual data archive 智能视听数据存档接口

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7129036

Tomás Koctúr, Matus Pleva, J. Juhár

引用次数: 3

On the existence of steady state oscillations in closed-loop feedback systems 关于闭环反馈系统中稳态振荡的存在性

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7129062

V. Stofanik, M. Minárik, E. Cocherová

引用次数: 0

Targets detection for FMICW radar FMICW雷达目标探测

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7128995

L. Rejfek, J. Pesek, V. Brazda

引用次数: 2

Spectrum averaging carrier frequency estimation 频谱平均载波频率估计

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7129027

F. Záplata, M. Kasal

引用次数: 1

Signal Analog-to-Event-to-Digital converting based on periodic sampling and precise event timing 基于周期性采样和精确事件定时的信号模数转换

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7128975

K. Sudars, I. Bilinskis, E. Boole, V. Vedin

引用次数: 9

A method of analog circuit optimization using adjoint sensitivity analysis 基于伴随灵敏度分析的模拟电路优化方法

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7129048

Deepak Joshi, S. Dash, R. Bhattacharjee, G. Trivedi

{"title":"A method of analog circuit optimization using adjoint sensitivity analysis","authors":"Deepak Joshi, S. Dash, R. Bhattacharjee, G. Trivedi","doi":"10.1109/RADIOELEK.2015.7129048","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2015.7129048","url":null,"abstract":"Analog circuit designing is an important aspect of VLSI chip design process. For the designing of analog circuits, electronic design automation tools need to be equipped with state-of-the-art efficient circuit analysis and optimization techniques. In this paper, a novel approach to optimize analog circuits (for gain, bandwidth and slew rate) is proposed using adjoint circuit analysis method. In this method an adjoint network of the original electrical (or electronic) circuit is constructed by using linearized circuit of the original electrical network in which MOS transistors are replaced by their small signal model. The objective function need to be analyzed for the optimization of analog circuit is evaluated using linearized circuit and its adjoint network (circuit) along with steepest descent method to find the next set of design parameters to optimize circuit in the design space. Barzilai and Borwein method is used to find the direction of design parameter vector during circuit optimization process. In this paper a basic cascode amplifier circuit has been designed at 180nm technology to prove the correctness of proposed method. To prove the effectiveness of the proposed approach, a two-stage operational amplifier circuit is also designed for gain optimization subject to a variety of design conditions and constraints. The solution of these circuits, designed with the optimized parameters calculated using our proposed method, matches with the solution of cascode amplifier and two-stage operational amplifier circuits designed using Mentor Graphics tool Pyxis (Eldo).","PeriodicalId":193275,"journal":{"name":"2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126661619","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}

引用次数: 1

Automatic Acoustic Speech segmentation in Praat using cloud based ASR 基于云自动语音识别的Praat语音自动分割

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7129000

Matus Pleva, J. Juhár, Andrew Simon Thiessen

{"title":"Automatic Acoustic Speech segmentation in Praat using cloud based ASR","authors":"Matus Pleva, J. Juhár, Andrew Simon Thiessen","doi":"10.1109/RADIOELEK.2015.7129000","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2015.7129000","url":null,"abstract":"The program Praat is a versatile speech analysis program, which becomes a standard in speech/language analysis scientific community. Automatic speech segmentation has been developed and used in Praat using a plugin called EasyAlign, which requires and input text (separated sentences) and clean audio recordings with quiet pauses between the sentences to operate. In this paper, a new functions will be evaluated and implemented into Praat to improve automatic speech segmentation processes and enables to process also noisy audio recordings with no input texts available. One of them is using also our own cloud based ASR (Automatic Speech recognition) solution developed. The results of the automatic speech recognition and different audio processing (noise-gate, de-noiser, normalization) were added into the Praat system to expand the EasyAlign functionality and improve the resulted automatic speech segmentation. The graphical output of the Praat also helps to visualize the automatic speech segmentation and also automatic speech recognition results for educational and system developers subjective evaluation purposes.","PeriodicalId":193275,"journal":{"name":"2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127126092","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}

引用次数: 7

Estimation of parameters for ground ADS-B radio channel model 地面ADS-B无线电信道模型参数估计

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7129008

P. Puričer, P. Kovář

引用次数: 1

Study of the coexistence between ZigBee and Wi-Fi IEEE 802.11b/g networks in the ISM band ISM频段ZigBee与Wi-Fi IEEE 802.11b/g网络共存的研究

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7128989

J. Neburka, Zdenek Tlamsa, Vlastimil Benes, L. Polak, O. Kaller, L. Klozar, L. Bolecek, Ondrej Zach, Jan Kufa, J. Sebesta, T. Kratochvil

{"title":"Study of the coexistence between ZigBee and Wi-Fi IEEE 802.11b/g networks in the ISM band","authors":"J. Neburka, Zdenek Tlamsa, Vlastimil Benes, L. Polak, O. Kaller, L. Klozar, L. Bolecek, Ondrej Zach, Jan Kufa, J. Sebesta, T. Kratochvil","doi":"10.1109/RADIOELEK.2015.7128989","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2015.7128989","url":null,"abstract":"The number of wirelessly connected multimedia devices and different communication standards, supported by these devices, is rapidly increasing. However, the appropriate frequency bands (licensed and unlicensed) for data transmission by these standards are very limited. The rising density of wireless networks and their coexistence in the same or adjacent radio frequency (RF) spectrum can significantly decrease the quality of provided services. This paper deals with the study of coexistence between ZigBee (IEEE 802.15.4) and Wireless Fidelity (Wi-Fi) networks, including the IEEE 802.11b/g standards, which operate in the unlicensed Industrial, Scientific and Medical (ISM) band at 2.4 GHz. Firstly, a general simulation model was developed. Secondly, to verify results from simulation by measurement, an appropriate laboratory workplace in anechoic chamber was proposed and realized. Such setup and the measurement principle are briefly described in this paper too. Impact of the IEEE 802.11b/g networks on the ZigBee and vice versa is evaluated by dependence of bit error rate (BER) and error vector magnitude (EVM) on the power imbalance between power levels of considered RF signals, respectively.","PeriodicalId":193275,"journal":{"name":"2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130591338","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}

引用次数: 9

Communication technology for smart heat metering 智能热计量的通信技术

2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2015-04-21 DOI: 10.1109/RADIOELEK.2015.7128983

Filip Holík, J. Horalek, Sona Neradova, Martin Novak, Ondrej Marik

引用次数: 0