Archive:: International Journal of Information and Communication Sciences:: Science Publishing Group

Volume 1, Issue 2, October 2016

Digital Chaotic Scrambling of Voice Based on Duffing Map

Amina Mahdi, Ameer K. Jawad, Saad S. Hreshee

Issue: Volume 1, Issue 2, October 2016

Pages: 16-21

Received: 15 June 2016

Accepted: 18 June 2016

Published: 26 August 2016

DOI: 10.11648/j.ijics.20160102.11

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Abstract: With the significant development in communication systems especially in the public channels through which our information travels, there are more increasing in the channels problems. The information security is the important one that should be enhanced. This paper presents a chaos-based speech scrambling system. Chaotic maps have been successfully ... Show More

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Decision Wave Equation and Block Diagram of Electro Magneto Elastic Actuator Nano - and Micro Displacement for Communications Systems

S. M. Afonin

Issue: Volume 1, Issue 2, October 2016

Pages: 22-29

Received: 2 August 2016

Accepted: 12 August 2016

Published: 6 September 2016

DOI: 10.11648/j.ijics.20160102.12

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Abstract: Decision wave equation, structural - parametric model and block diagram of electro magneto elastic actuators are obtained, its transfer functions are bult. Effects of geometric and physical parameters of electro magneto elastic actuators and external load on its dynamic characteristics are determined. For calculation of communications systems with ... Show More

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Spectrally Efficient SAC-OCDMA System Using a New Two-Code Keying Scheme

Hamza M. R. Al-Khafaji, Razali Ngah, Alaa J. Mousa, S. A. Aljunid

Issue: Volume 1, Issue 2, October 2016

Pages: 30-34

Received: 2 July 2016

Accepted: 19 August 2016

Published: 26 September 2016

DOI: 10.11648/j.ijics.20160102.13

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Abstract: This paper introduces a new two-code keying scheme for increasing the spectral efficiency (SE) of spectral-amplitude-coding optical code-division multiple-access (SAC-OCDMA) system. The analytical expression is derived for the SE of SAC-OCDMA system based on the proposed scheme utilizing multi-diagonal (MD) code. The theoretical results demonstrate... Show More

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Efficiency Improvement for Optical OFDM Systems

Mohammad Ghanbarisabagh, Nasreddine Maloulki, Bechir Nsiri

Issue: Volume 1, Issue 2, October 2016

Pages: 35-38

Received: 27 July 2016

Accepted: 25 August 2016

Published: 30 September 2016

DOI: 10.11648/j.ijics.20160102.14

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Abstract: The evaluation of Optical Orthogonal Frequency Division Multiplexing (OOFDM) using Least Mean Square Time-domain Equalizer (LMSTE), Recursive Least Squares-Time-domain Equalizer (RLSTE) and Decision Feedback Time-domain Equalizer (DFTE) to reduce Cyclic Prefix (CP) length over 1200 Km of Standard Single Mode Fiber (SSMF) is presented. All of these ... Show More

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