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A METHOD FOR FAST TIMER coding OF TEXTS

CYBERNETICS AND SYSTEMS ANALYSIS 2013年第1期49卷 133-138页

作者： Skuratovskii, R. V. Natl Tech Univ Ukraine Kyiv Polytech Inst Kiev Ukraine

A statistics-oriented data compression method based on unconventional timer encryption is developed. Necessary complexity estimates are made. The method can be used to compress sms messages. A probabilistic analysis is performed and its efficiency is evaluated. The theoretical data compression rate is the world's highest. The time complexity is determined, which can be used to find the archiving time taking into account the frequency of the text generator.

关键词： block coding archiving data compression algorithm timer coding

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Techniques for PAPR Reduction in OFDM Systems

Techniques for PAPR Reduction in OFDM Systems

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International Conference on Manufacturing Science and Materials Engineering (ICMSME 2011)

作者： Chen, Lin Hu, Xuelong Shanghai Univ Elect Power Dept Commun Engn Shanghai Peoples R China

ISBN: (纸本)9783037852897

Orthogonal Frequency Division Multiplexing (OFDM) has been focused on in high-data-rate wireless communication research. But the high Peak-to-Average Power Ratio (PAPR) is one of the main obstacles to limit wide applications of OFDM. In this paper, based on the definition of the PAPR in OFDM systems, these techniques on PAPR reduction are presented, including signal distortion, signal scrambling, and block coding. The advantages and disadvantages of these techniques are discussed in detail and some performances are achieved by Monte Carlo simulations.

关键词： OFDM PAPR Signal Distortion Signal Scrambling block coding

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Advanced 3b4b channel coding for low error-rate optical links at 2.488 Gbit/s

Advanced 3b4b channel coding for low error-rate optical link...

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2nd International Conference on Information Technology - coding and Computing (ITCC 2001)

作者： Reinecke, M Hansen, K DESY Deutsch Elektronen Synchtrotron Dept FEC D-22603 Hamburg Germany

ISBN: (纸本)0769510620

We report on the performance of an optimized parallel channel coder for high-speed optical transmission systems. The coding properties are discussed by an evaluation of the signal statistics of the coded pulse train in the time and frequency domain. The discussion is mainly based on the results far the power spectral density (PSD) and the autocorrelation function (AKF). The theoretical investigations have been verified by measurements with a developed 2.488 Gbit/s optical transmission system. Reliability studies have shown a system's bit error rate below 10(-13).

关键词： channel coding optical data transmission code spectra bit error rate block coding

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Polarization Angle Diversity and New digital software radio architecture

Polarization Angle Diversity and New digital software radio ...

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International Conference on Circuit, Power and Computing Technologies (ICCPCT)

作者： Aono, Masahiro Takei, Ken Hitachi Ltd Hitachi Res Lab Dept Energy Management Syst 1-1Omika Cho 7 Chome Hitachi Ibaraki Japan

ISBN: (纸本)9781479970759

we are developing new radio architecture for applying a wireless communication system to controlling and monitoring systems in industrial infrastructure systems. Using polarization angle diversity, we can achieve reliable communication in a non line-of-sight situation. To realize polarization angle diversity, we use a rotating polarized radio wave. When we use polarization angle diversity, we need to control radio frequencies more easily. New software radio architecture create radio frequency in a digital circuit directly. It has a possibility to control a rotating polarization radio wave. And by experiment, I show a result of basic communication test and confirm its functions.

关键词： M2M radio block coding polarization diversity

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Hybrid Companding and coding for Peak to Average Power Ratio Reduction in Filter Bank Based Multicarrier System

Hybrid Companding and Coding for Peak to Average Power Ratio...

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International Conference on Control Communication and Computing (ICCC)

作者： Mishmy, T. S. Sheeba, V. S. Govt Engn Coll Trichur Dept Elect & Commun Trichur Kerala India

ISBN: (纸本)9781479905751;9781479905737

OFDM is usually selected as a good candidate for Digital Subscriber Line (DSL) systems. However, the weaknesses of the OFDM technique, such as low bandwidth efficiency and high out-of-band emission, lead to the introduction of Filter Bank based Multi Carrier (FBMC) system. In this paper, an efficient FBMC system using Cosine Modulated Filter Banks (CMFB) has been proposed. Peak to Average Power Ratio (PAPR) is an important problem in FBMC system as in every multicarrier system. PAPR reduction using companding, block coding and a hybrid of both methods are carried out and their performance is evaluated using CCDF plot and BER plot. The simulation results show that hybrid method outperforms the other methods and gives better PAPR reduction.

关键词： FBMC CMFB PAPR block coding Companding

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Understanding College Level Student Learning of Basic Programming at an Open Access Institution 2023

Understanding College Level Student Learning of Basic Progra...

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Annual ACM Southeast Conference (ACMSE)

作者： Robertson, Cindy Doloc-Mihu, Anca Georgia Gwinnett Coll Lawrenceville GA 30043 USA

ISBN: (纸本)9781450399210

In this study, we present our findings with regard to teaching basic programming concepts at an Open Access Institution. The goal was to gather insight into how to best introduce programming to our students. We found that our students should start with block coding, as a means to slowly and easily introduce coding concepts. Then they are ready for text-based programming skills. This flow allows them to understand and be able to apply basic computing concepts and enjoy the process of learning. Also, introducing block coding should be done via a fun game or activity to entice them to want to learn programming.

关键词： Project-based Learning Teaching Assessment block coding Critical Thinking CS Education IT Outreach Programming Online Gamification

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Secured Data Transmission Over Insecure Networks-on-Chip by Modulating Inter-Packet Delays

Secured Data Transmission Over Insecure Networks-on-Chip by ...

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ACM/IEEE Int Conf on Hardware/Software Codesign and Syst Synthesis / Int Conf on Compilers, Architectures, and Synthesis for Embedded Syst / Int Conf on Embedded Software part of the Embedded Syst Week

作者： Xu, Jiaen Wang, Xiaohang Jiang, Yingtao Singh, Amit Kumar Gu, Chongyan Huang, Letian Yang, Mei Li, Shunbin South China Univ Technol Sch Software Engn Guangzhou 510006 Peoples R China Zhejiang Univ Sch Cyber Sci & Technol Hangzhou 310027 Peoples R China Chinese Acad Sci Inst Comp Technol Zhejiang Lab Beijing 100045 Peoples R China Chinese Acad Sci Inst Comp Technol State Key Lab Comp Architecture Beijing 100045 Peoples R China Univ Nevada Dept Elect & Comp Engn Las Vegas NV 89154 USA Univ Essex Sch Comp Sci & Elect Engn Colchester CO4 3SQ Essex England Queens Univ Belfast Sch Elect Elect Engn & Comp Sci Belfast BT3 9DT Antrim North Ireland Univ Elect Sci & Technol China Sch Elect Sci & Engn Chengdu 610056 Peoples R China Zhejiang Lab Hangzhou 311121 Peoples R China

As the network-on-chip (NoC) integrated into an SoC design can come from an untrusted third party, there is a growing risk that data integrity and security get compromised when supposedly sensitive data flows through such an untrusted NoC. We thus introduce a new method that can ensure secure and secret data transmission over such an untrusted NoC. Essentially, the proposed scheme relies on encoding binary data as delays between packets travelling across the source and destination pair. The maximum data transmission rate of this inter-packet-delay (IPD)-based communication channel can be determined from the analytical model developed in this article. To further improve the undetectability and robustness of the proposed data transmission scheme, a new block coding method and communication protocol are also proposed. Experimental results show that the proposed IPD-based method can achieve a packet error rate (PER) of as low as 0.3% and an effective throughput of 2.3 x 10(5) b/s, outperforming the methods of thermal covert channel, cache covert channel, and circuit-based encryption and, thus, is suitable for secure data transmission in unsecure systems.

关键词： block coding inter-packet delay network-on-chip (NoC) secure channel

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IMPROVED SPEECH EMOTION RECOGNITION USING ERROR CORRECTING CODES

IMPROVED SPEECH EMOTION RECOGNITION USING ERROR CORRECTING C...

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IEEE International Conference on Multimedia & Expo (ICME)

作者： Chakraborty, Rupayan Kopparapu, Sunil Kumar TCS Innovat Labs Mumbai Yantra Pk Thane West 400601 Maharashtra India

ISBN: (纸本)9781509015528

We propose the use of the popular error correcting codes (ECC) in a multi-class audio emotion recognition scenario to improve the emotion recognition accuracy in spoken speech. In this paper, we visualize the emotion recognition system as a noisy communication channel, thus motivating the use of ECC in the emotion recognition process. We assume the emotion recognition process consists of an audio feature extraction module followed by an artificial neural network (ANN) for emotion (represented by a binary string) classification. The noisy communication channel, in our formulation, is the insufficiently learnt ANN classifier which in turn results in an erroneous (binary string) emotion classification. In our system, we use ECC to encode the binary string representing the emotion class using a block Coder (BC). We show through rigorous experimentation, on Emo-DB database, that the use of ECC improves the recognition accuracy of the emotion classification system in the range of (4.6 -9.35)% in comparison to the baseline ANN-based emotion classification system.

关键词： Emotion recognition error correction codes artificial neural network block coding

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The timer compression of information

The timer compression of information

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4th World Conference on Smart Trends in Systems, Security and Sustainability (WorldS4)

作者： Skuratovskii, Ruslan Osadchyy, Yevgen Osadchyy, Volodymyr NTU KPI Dept Informat & Comp Sci Kiev Ukraine IAPM Kiev Ukraine Natl Univ Kiev Ukraine Igor Sikorsky Kyiv Polytech Inst Fac Informat & Comp Engn Kiev Ukraine

ISBN: (纸本)9781728168234

This paper is devoted to a transform-based quantitative data compression technique involving rapid enumeration in a unary-binary time-based numeral system (NS). The symbols comprising the alphabets of human-computer interaction languages (HCIL), which are used in an informational message (IM), are collected in primary code tables, such as the ASCII table. The statistical-oriented data compression method using unconventional timer encryption and encoding information are proposed by us. It was constructed probability - discrete model of the set of character sequences and characterized some probabilistic algorithms associated with the recovery of text by its public key and its cipher. We find the possibility of parallel implementation of this method by building a block of timer tags. The necessary complex assessments are made. The method can be used to compress SMS messages. Probabilistic-statistical analysis and evaluation of their effectiveness are obtained.

关键词： block coding archiving data compression algorithm timer coding

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A hybrid 2-3-3 bits-based image encoding scheme

A hybrid 2-3-3 bits-based image encoding scheme

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6th IEEE International Symposium on Signal Processing and Information Technology

作者： Zahir, Saif Chowdhury, Rejaul Univ Northern British Columbia Dept Comp Sci Prince George BC V2N 4Z9 Canada

ISBN: (纸本)9780780397538

In this paper, we present a hybrid 2-3-3 bits based encoding scheme for gray scale images. In this scheme, the gray scale image is converted to its equivalent 8-binary maps. We employ our lossless block coding technique along with a two dimensional information preserving skip-line routine on the two most significant binary maps. Then, we apply our lossy block coding technique along with a lossy skip-line routine to the next three binary maps. Finally, the three least significant binary maps are set to zero. We tested this scheme on a large set of images of different sizes and applications. The simulation results show that the proposed scheme outperformed the standard JPEG compression in most of the cases while maintained high SNR values.

关键词： block coding sparse data compression image compression binary image coding

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