发布求助
文献互助 智能选刊 最新文献

2017 International Symposium on Signals, Circuits and Systems (ISSCS)最新文献

筛选
英文 中文
USRP based HF spectrum occupancy measurements at two locations in central and Western Romania 基于USRP的高频频谱占用测量在罗马尼亚中部和西部的两个地点
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034876
A. De Sabata, Cornel Balint, P. Bechet, S. Miclaus
{"title":"USRP based HF spectrum occupancy measurements at two locations in central and Western Romania","authors":"A. De Sabata, Cornel Balint, P. Bechet, S. Miclaus","doi":"10.1109/ISSCS.2017.8034876","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034876","url":null,"abstract":"In this paper, measurements of the spectral occupancy in some high frequency (HF) bands in the Western part of Romania are presented. Signals have been acquisitioned by means of an Universal Software Radio Peripheral (USRP) equipment and spectrum occupancy values have been calculated off-line for a set of frequency bands that present interest for establishing of a system for emergency communications. Calculations have been based on an energy detection criterion that is presented and discussed in the paper. Preliminary measurements performed simultaneously at two different locations, namely in Sibiu and Timişoara cities, Romania, are also reported and compared.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114539644","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: 6
Optimal Power Point tracking for PV-systems with retrofitted Energy Storage Systems 带储能系统的光伏系统最优功率点跟踪
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034940
M. Wattenberg, M. Pfost
{"title":"Optimal Power Point tracking for PV-systems with retrofitted Energy Storage Systems","authors":"M. Wattenberg, M. Pfost","doi":"10.1109/ISSCS.2017.8034940","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034940","url":null,"abstract":"This paper presents a control strategy for optimal utilization of photovoltaic (PV) generated power in conjunction with an Energy Storage System (ESS). The ESS is specifically designed to be retrofitted into existing PV systems in an end-user application. It can be attached in parallel to the PV system and connects to existing DC/AC inverters. In particular, the study covers the impact such a modification has on the output power of existing PV panels. A distinct degradation of PV output power was found due to the different power characteristics of PV panel and ESS. To overcome such degradation a novel feedback system is proposed. The feedback system continuously modifies the power characteristic of the ESS to match the PV panel and thus achieves optimal power utilization. Impact on PV and Maximum Power Point tracking performance is analyzed. Simulation of the proposed system is performed in MATLAB/Simulink. The results are found to be satisfactory.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115953084","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
Increased-efficiency single-phase direct boost A.C.- A.C. converter 提高效率的单相直接升压交流-交流变换器
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034917
Aghion Cristian, L. Mihai, Ursaru Ovidiu, Lucanu Nicolae
{"title":"Increased-efficiency single-phase direct boost A.C.- A.C. converter","authors":"Aghion Cristian, L. Mihai, Ursaru Ovidiu, Lucanu Nicolae","doi":"10.1109/ISSCS.2017.8034917","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034917","url":null,"abstract":"A.C.-A.C. converters are currently used in A.C. motor speed control, adjustable switching A.C. sources, A.C. voltage waveform restorers, electric heating, lighting control etc. In many applications, they replaced alternative voltage regulators that use thyristors or triacs due to their benefits: they are smaller, more efficient and the waveforms of the voltage, load current and input current are much better.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134280068","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: 0
Fuzzy logic system linearization for sensors 传感器模糊逻辑系统线性化
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034892
H. Teodorescu
{"title":"Fuzzy logic system linearization for sensors","authors":"H. Teodorescu","doi":"10.1109/ISSCS.2017.8034892","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034892","url":null,"abstract":"We deal with the problem of the linearization of the sensor characteristic and propose a novel linearization method. The importance of the problem resides in the need to optimize the operation of huge numbers of various sensors in sensor networks in cheap but efficient IOT and mobile applications required by today technologies. The implementation is founded by results in the field of fuzzy logic systems and has a low footprint in terms of program and data memory. Therefore, the solution may be advantageous in wearable systems, including those for medical applications, among others.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132396978","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: 5
Automatic periodic noise removal in microscopy images 自动周期性噪声去除显微镜图像
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034894
M. G. Ionita, H. Coanda
{"title":"Automatic periodic noise removal in microscopy images","authors":"M. G. Ionita, H. Coanda","doi":"10.1109/ISSCS.2017.8034894","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034894","url":null,"abstract":"This paper deals with the removal of periodic noise patterns in microscopy images. The proposed method analyzes, determines and corrects the magnitude spectrum components. The denoising in frequency domain is known to be a better solution for preserving the fine details. Experimental results are provided.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126202843","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
Fair resource allocation in downlink OFDM-based cognitive radio networks 基于ofdm的下行认知无线网络资源公平分配
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034871
Xu Wang, S. Ekin, K. Qaraqe, E. Serpedin
{"title":"Fair resource allocation in downlink OFDM-based cognitive radio networks","authors":"Xu Wang, S. Ekin, K. Qaraqe, E. Serpedin","doi":"10.1109/ISSCS.2017.8034871","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034871","url":null,"abstract":"This work investigates the downlink resource allocation (RA) problem in orthogonal frequency division multiplexing (OFDM)-based cognitive radio networks. The objective of this work is to develop a fair RA-algorithm that maximizes the capacity of secondary users (SUs) and in the same time limits the interference caused to the primary users. The fairness condition is formulated as a minimal data condition at SUs. A relaxed version of the RA-problem is first reviewed without adopting the fairness and then a heuristic algorithm is proposed based on the results obtained for the relaxed problem. Computer simulation results illustrate that the proposed heuristic algorithm can achieve near-optimal performance.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126515379","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: 0
Relative orientation estimation in formation flying satellites 编队卫星相对方位估计
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034927
Alexandru-Mihai Crisan, Alexandru Martian, D. Coltuc
{"title":"Relative orientation estimation in formation flying satellites","authors":"Alexandru-Mihai Crisan, Alexandru Martian, D. Coltuc","doi":"10.1109/ISSCS.2017.8034927","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034927","url":null,"abstract":"Satellite precision formation flying (PFF) is a concept in which multiple spacecraft communicate via an inter-satellite link (ISL) and cooperate to achieve the goal of a single, more complex satellite. This enables the creation of virtual scientific structures such as interferometers or imagers that would not be deployable in space because of their physical dimensions. PFF requires precise knowledge of the relative orientation and distance between the involved satellites. Determining the relative orientation is similar to estimating the angle of arrival (AoA) of the ISL. This paper presents an AoA estimation technique specific to Orthogonal Frequency-Division Multiplexing (OFDM) communications systems. The AoA is calculated using the preamble that is necessary to synchronize the ISL. It is estimated from the phase of the correlation at maximum. The AoA estimator is evaluated under various SNR conditions using MATLAB simulations. The results show that the estimator accuracy improves as the distance between the receiver antennas approaches the half-wavelength condition.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114238007","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: 2
Least Squares Pursuit for sparse signal recovery 稀疏信号恢复的最小二乘跟踪
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034924
Nicolae Cleju
{"title":"Least Squares Pursuit for sparse signal recovery","authors":"Nicolae Cleju","doi":"10.1109/ISSCS.2017.8034924","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034924","url":null,"abstract":"This paper presents a novel algorithm for sparse signal recovery, named Least Squares Pursuit, based on least-squares minimization followed by choosing the atom with the largest resulting coefficient, in a greedy one-by-one fashion. It follows a similar approach to that of Orthogonal Matching Pursuit, but with different prioritization of the constraints. We propose an efficient implementation for Least Squares Pursuit, derive theoretical guarantees for signal recovery, and finally present promising simulation results.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115542869","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: 3
Grouped B-spline functions for the design of improved FIR filters 分组b样条函数用于设计改进的FIR滤波器
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034866
L. Stanciu, V. Stanciu, M. Udrea
{"title":"Grouped B-spline functions for the design of improved FIR filters","authors":"L. Stanciu, V. Stanciu, M. Udrea","doi":"10.1109/ISSCS.2017.8034866","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034866","url":null,"abstract":"The design of the finite impulse response (FIR) digital filters with linear phase is considered by cascading a prototype filter with complementary comb filters. The minimum attenuation in the stop band is increased and the complexity of implementation is reduced, because the complementary comb filters contain only adders and storage units. The prototype filter is designed by using grouped B-spline windows and a modified transfer function. In the proposed method, the composite filter maintains the linear phase, because the complementary comb filters have linear phase responses.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114692940","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
Visual saliency analysis in paintings 绘画中的视觉显著性分析
2017 International Symposium on Signals, Circuits and Systems (ISSCS) Pub Date : 2017-07-01 DOI: 10.1109/ISSCS.2017.8034906
B. Stoica, L. Florea, Alexandra Bădeanu, Andrei Racoviteanu, Iulian-Ionut Felea, C. Florea
{"title":"Visual saliency analysis in paintings","authors":"B. Stoica, L. Florea, Alexandra Bădeanu, Andrei Racoviteanu, Iulian-Ionut Felea, C. Florea","doi":"10.1109/ISSCS.2017.8034906","DOIUrl":"https://doi.org/10.1109/ISSCS.2017.8034906","url":null,"abstract":"Visual saliency is the property of a scene to draw the attention of different people to the same objects within it. Its investigation and development enabled many practical applications. In this paper we aim to use it for the study of visual art. As a first contribution we introduce an extensive database annotated in terms of visual saliency by considering data acquired from many users. Secondly, based on visual saliency regions, we identify some core differences between various artistic movements represented within. Thirdly, we evaluate comparatively several state-of-the-art saliency prediction algorithms, so to identify the most performing in the context of digitized paintings.","PeriodicalId":338255,"journal":{"name":"2017 International Symposium on Signals, Circuits and Systems (ISSCS)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124703187","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: 2
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信