• Journal of electromagnetic engineering and science
• /
• v.4 no.2
• /
• pp.63-67
• /
• 2004

DAM(Delay-And-Multiplier) intercept receiver usually detects the symbol rate of the transmitted DS spread spectrum signal for the feature extraction. It is important for secure communication to reduce the normalized output signal-to-noise ratio that is generated at the DAM intercept receiver as a measure of detectability. In this paper, several kinds of chip waveforms are novelly analyzed for LPI(Low-Probability of Intercept) communication against DAM intercept receiver. Consequently, it is shown that the rectangular chip waveform shows the best LPI performance in the bandwidth of 2/$T_c$TEX>, 4/$T_c$TEX>, and 6/$T_c$TEX>/. Except the rectangular waveform, kaiser chip waveform show better LPI performance than the other waveforms in the bandwidth of 4/$T_c$TEX> and 6/$T_c$TEX>.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.21 no.3
• /
• pp.285-291
• /
• 2010

In this paper, we demonstrate that indoor wireless optical communication is possible with an LED and a solar cell. A lighting LED is used for lighting and signal transmission. A solar cell is used for collecting light energy and signal detection. This scheme is very useful because transmission is possible without any additional communication systems. In experiments, wireless optical communication was carried out at a data rate of 9.6 kbps using a lighting LED and a solar cell.

• Journal of Information Processing Systems
• /
• v.15 no.3
• /
• pp.457-463
• /
• 2019

The blockchain and crypto currency has become one of the most essential components of a communication network in the recent years. Through communication networking, we browse the internet, make VoIP phone calls, have video conferences and check e-mails via computers. A lot of researches are being conducting to address the blockchain and crypto currency challenges in communication networking and provide corresponding solutions. In this paper, a diverse kind of novel research works in terms of mechanisms, techniques, architectures, and frameworks have been proposed to provide possible solutions against the existing challenges in the communication networking. Such novel research works involve thermal load capacity techniques, intelligent sensing mechanism, secure cloud computing system communication algorithm for wearable healthcare systems, sentiment analysis, optimized resources.

• International Journal of Computer Science & Network Security
• /
• v.22 no.11
• /
• pp.189-191
• /
• 2022

The article is devoted to the study of the prerequisites and stages of the formation of information and communication competence, its place in the system of professional competence of a teacher, and the way its development occurs. Information and communication competence is presented in the paper as a systemic property of the subject's personality, and the components of this system, namely the activity, communication, reflexive, and cognitive components, are disclosed.

• Proceedings of the Korean Information Science Society Conference
• /
• 2010.06a
• /
• pp.17-18
• /
• 2010

• Proceedings of the Korean Information Science Society Conference
• /
• 2010.06a
• /
• pp.15-16
• /
• 2010

• Korean Management Science Review
• /
• v.10 no.1
• /
• pp.1-22
• /
• 1993

Systemetic classification of a technology is critical to the development of technology strategy. This paper suggests a new technology classification scheme for computer and communication : a two-level scheme. Technology is first classified by its role and function in the upper level which forms a 2 * 2 matrix. The technology is then further classified into the lower level of 3 classes by associations among technology elements. Thus, a new classification scheme of 2 * 2 * 3 matrix is proposed for the computer and communication technology.

• Bulletin of the Korean Space Science Society
• /
• 2002.05b
• /
• pp.47.1-47
• /
• 2002

• Journal of Information Processing Systems
• /
• v.15 no.1
• /
• pp.1-6
• /
• 2019

Recently, big data and artificial intelligence (AI) based on communication systems have become one of the hottest issues in the technology sector, and methods of analyzing big data using AI approaches are now considered essential. This paper presents diverse paradigms to subjects which deal with diverse research areas, such as image segmentation, fingerprint matching, human tracking techniques, malware distribution networks, methods of intrusion detection, digital image watermarking, wireless sensor networks, probabilistic neural networks, query processing of encrypted data, the semantic web, decision-making, software engineering, and so on.

• Food Science and Industry
• /
• v.48 no.3
• /
• pp.37-44
• /
• 2015