Optical wireless bandwidth efficiency enhancement using interval Shift key
Joint Authors
al-Malih, Muhammad A.
Mustafa, Amin B.
Jamal al-Din, Muhammad A.
Uthman, Ashraf A.
Source
Journal of Science and Technology : in Engineering and Computer Sciences
Issue
Vol. 17, Issue 3 (31 Dec. 2016), pp.67-77, 11 p.
Publisher
Sudan University of Science and Technology Deanship of Scientific Research
Publication Date
2016-12-31
Country of Publication
Sudan
No. of Pages
11
Main Subjects
Information Technology and Computer Science
Topics
Abstract EN
Optical wireless communication is an emerging technology that has generated a vast number of interesting solutions to very complicated communication challenges.
For example high data rate, high capacity, unlicensed spectrum, high security and minimum interference links.
The optical systems are significantly different from radio frequency channels where amplitude, frequency and carrier phase are modulated, in optical signal the intensity is modulated.
Unfortunately, optical sources suffer from long rise/fall times such as in light emitting diodes.
This leads to inefficient utilization of optical communication bandwidth.
Consequently, the modulation bandwidth is restricted to only few megahertz’s.
Additionally, optical detectors exhibit large capacitance that prohibits high data rate.
Moreover, the optical transmission power is limited by factors such as human eye safety and power consumption limits.
In this paper, a modulation technique named Interval Shift Key (ISK) is used to modulate subcarriers of optical orthogonal frequency-division multiplexing (OFDM).
This technique improves the bandwidth utilization and power efficiencies and reduce bit error rate (BER).
The MATLAB software is used in this study to simulate BER and power efficiency in an adaptive white Gaussian noise channel.
The technique is validated by comparing simulated and published results where good agreement is achieved.
American Psychological Association (APA)
Mustafa, Amin B.& Jamal al-Din, Muhammad A.& al-Malih, Muhammad A.& Uthman, Ashraf A.. 2016. Optical wireless bandwidth efficiency enhancement using interval Shift key. Journal of Science and Technology : in Engineering and Computer Sciences،Vol. 17, no. 3, pp.67-77.
https://search.emarefa.net/detail/BIM-728903
Modern Language Association (MLA)
Uthman, Ashraf A.…[et al.]. Optical wireless bandwidth efficiency enhancement using interval Shift key. Journal of Science and Technology : in Engineering and Computer Sciences Vol. 17, no. 3 (2016), pp.67-77.
https://search.emarefa.net/detail/BIM-728903
American Medical Association (AMA)
Mustafa, Amin B.& Jamal al-Din, Muhammad A.& al-Malih, Muhammad A.& Uthman, Ashraf A.. Optical wireless bandwidth efficiency enhancement using interval Shift key. Journal of Science and Technology : in Engineering and Computer Sciences. 2016. Vol. 17, no. 3, pp.67-77.
https://search.emarefa.net/detail/BIM-728903
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 76-77
Record ID
BIM-728903