20th International Conference Radioelektronika 2010最新文献_第2页

Single active element PID controllers 单主动元件PID控制器

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478563

V. Michal, C. Premont, Gaël Pillonet, N. Abouchi

引用次数: 27

Refined iterative detection of coded SC-FDMA based transmission systems 基于编码SC-FDMA传输系统的改进迭代检测

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478584

J. Gazda, P. Drotár, D. Kocur, P. Galajda

引用次数: 1

Head position monitoring system design 头部位置监控系统设计

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478556

P. Čech, J. Dlouhý, M. Čížek, I. Vícha, J. Rozman

{"title":"Head position monitoring system design","authors":"P. Čech, J. Dlouhý, M. Čížek, I. Vícha, J. Rozman","doi":"10.1109/RADIOELEK.2010.5478556","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2010.5478556","url":null,"abstract":"Presented paper is focused on description of a system design for monitoring patient head after special ophthalmological operation called Vitrectomy. For optimal recovery a correct position of the head during recovery time is important. The designed system consists of a telemetric monitoring unit and communication unit. The monitoring unit provides periodical tilt sensing using the digital MEMS accelerometer. The tilt angle and corresponding time are stored in built-in memory. The patient is also warned by sound alarm when posture of head is incorrect. The second part of this system is communication unit which provides communication with the monitoring unit via wireless interface. This communication supports single or continual mode, so the measured data can be available immediately or after treatment period. The developed computer software application provides communication and makes it possible to set up the device before treatment and download the data during or after treatment. It is also designed for measured data analyzing. The described system helps the patient to keep a correct head position. Thanks to data logging it is also a powerful diagnostic tool for clinical specialists.","PeriodicalId":398720,"journal":{"name":"20th International Conference Radioelektronika 2010","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131878853","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: 8

LTE Advanced — A further evolutionary step for Next Generation Mobile Networks LTE高级-下一代移动网络的进一步发展步骤

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478548

Vit Stencel, Andreas Müller, Philipp Frank

引用次数: 37

Comparison of native and In-depth Symbol interleaving used in DVB-T/H channel coding DVB-T/H信道编码中原生和深度符号交错的比较

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478590

Ondřej Hüttl, T. Kratochvil

引用次数: 2

Performance of interpolation algorithms for PWM driven power amplifiers PWM驱动功率放大器插补算法的性能

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478594

S. Matejka

{"title":"Performance of interpolation algorithms for PWM driven power amplifiers","authors":"S. Matejka","doi":"10.1109/RADIOELEK.2010.5478594","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2010.5478594","url":null,"abstract":"The new radio broadcasting standards as Digital Radio Mondiale (DRM) and HD Radio impose new demands on AM transmitters. Nowadays, two modulating designs dominate over the AM transmitter market - Pulse Width Modulation (PWM) technology and digital technology. In both cases, it is profitable to implement the modulator in all-digital form, which enables to use powerful DSP algorithms. This paper presents performance study of digital PWM generator, which is the key component of the PWM AM transmitters. As only the natural PWM is baseband distortion-free modulation scheme, the digital PWM generator must calculate the intersection of the modulating signal and a piecewise linear reference signal, requiring a low-distortion interpolating algorithm. Moreover, the digital PWM generator output stage must offer exceptional time resolution and low jitter. Therefore, the accuracy of interpolating algorithm and time resolution of PWM generator are surely the critical points of the digital PWM generator design. Both phenomena are discussed in this paper. The different interpolating algorithms are tested for Signal-to-Sampling Noise Ratio (SSNR) and the digital PWM generator time resolution impact on spectral properties is simulated.","PeriodicalId":398720,"journal":{"name":"20th International Conference Radioelektronika 2010","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133175212","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

Temporal-spatial error concealment algorithm for intra-frames in H.264/AVC coded video H.264/AVC编码视频帧内的时空错误隐藏算法

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478576

Branislav Hrusovský, J. Mochnáč, S. Marchevsky

引用次数: 12

Weak signal enhancement in radar signal processing 雷达信号处理中的弱信号增强

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478571

J. Rovnáková, D. Kocur

引用次数: 22

Multiplatform library configuration and tuning tool for multiprocessor system on chip 片上多处理器系统的多平台库配置和调优工具

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478558

F. Adamec, T. Fryza

{"title":"Multiplatform library configuration and tuning tool for multiprocessor system on chip","authors":"F. Adamec, T. Fryza","doi":"10.1109/RADIOELEK.2010.5478558","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2010.5478558","url":null,"abstract":"The article introduces the Multiplatform Library Configuration and Tuning Tool (MLCTT) system idea. Today there are many complex projects with digital hardware, where fast speed, low development cost and low power consumption are required. We hope that presented idea can be a good solution for this problem. The introduced MLCTT system is combination of Multiprocessor System on Chip and Multi Core System on Chip. It consists of rich set of functional blocks, which are part of almost all modern digital processing systems and defines some basic principles for easy connectivity between those blocks and external environment. By using this solution, the developers can easily create necessarily hardware for target application and easily change it during software development, if necessarily. The main advantage of this solution is independence on used processor(s) and easy network on chip scalability. The whole system is based on the SystemC TLM-2.0 model, because those features are suitable for software profiling and dynamic system generation. This allows the best performance and power consumption tuning for a desired application. The basic of this concept and its advantages are introduced in the paper.","PeriodicalId":398720,"journal":{"name":"20th International Conference Radioelektronika 2010","volume":"73 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116658535","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

Evaluation of channel estimation error inflicted by nonlinear amplification and of its recovery by the means of iterative algorithm 非线性放大对信道估计误差的评估及其迭代恢复方法

20th International Conference Radioelektronika 2010 Pub Date : 2010-04-19 DOI: 10.1109/RADIOELEK.2010.5478582

J. Štěrba, D. Kocur

{"title":"Evaluation of channel estimation error inflicted by nonlinear amplification and of its recovery by the means of iterative algorithm","authors":"J. Štěrba, D. Kocur","doi":"10.1109/RADIOELEK.2010.5478582","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2010.5478582","url":null,"abstract":"When high power amplifiers are in OFDM transmitters employed in the area of their nonlinear characteristics, the transmitters became more energy efficient and their consumption decreases. However, transmitted signal is nonlinearly amplified and therefore subject to nonlinear distortion. When assuming perfect channel state information present at the receiver, only data symbols are nonlinearly distorted, what results in a decreased performance. However, real world devices must obtain channel state information through estimation process, which is usually based on insertion of pilot symbols into transmission and subsequent pilot symbols channel estimation. In this case, also transferred pilot symbols are subject to nonlinear amplification and distortion, which lowers the accuracy of channel estimation process, and further decreases the transmission performance. This article concerns with evaluation of channel estimation error in a situation of nonlinear amplification, and with an improvement of channel estimation error by iterative algorithm of nonlinear distortion estimation, cancellation and channel reestimation.","PeriodicalId":398720,"journal":{"name":"20th International Conference Radioelektronika 2010","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115337763","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