Adaptive OFDM-IM System Over Faded Shadowing Channel

Ibrahim Mokhtar Aboharba; Quazi Mehbubar Rahman; Raveendra Rao

doi:doi:10.11648/j.ajnc.20190801.14

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Adaptive OFDM-IM System Over Faded Shadowing Channel

Ibrahim Mokhtar Aboharba, Quazi Mehbubar Rahman, Raveendra Rao

Published in American Journal of Networks and Communications (Volume 8, Issue 1)

Received: 25 April 2019 Accepted: 30 May 2019 Published: 17 July 2019

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Abstract

Spectral efﬁciency (SE) and energy efﬁciency (EE) play major roles in evaluating the quality of service (QoS) of a wireless communication system. Designing an efﬁcient wireless communication system requires trade-off between these two parameters. Orthogonal frequency division multiplexing technique with Index Modulation (OFDM-IM) has been introduced in the literature to increase the SE compared to traditional OFDM. In this paper, an adaptive technique with OFDM-IM is introduced in an M-QAM based scheme to maintain a guaranteed level of average bit error probability (ABEP) with enhanced SE. It has been demonstrated that by adaptively varying the number of active subcarriers and modulation levels in M-QAM scheme, maximum EE can also be achieved for an acceptable ABEP. The closed-form expressions of ABEP and pairwise error probability (PEP) for OFDM-IM with M-ary QAM modulation are derived and examined over the composite Nakagami-m Gamma (NG) fading channel model using greedy detection (GD). In addition, the performance of adaptive OFDM-IM with M-QAM Modulation scheme is evaluated in terms of efﬁciency metrics, outage probability, and ABEP. The obtained results show that the adaptive scheme offers high potential for accomplishing signiﬁcant improvement in SE and EE while maintaining acceptable ABEP even under severe channel impairment.

Published in	American Journal of Networks and Communications (Volume 8, Issue 1)
DOI	10.11648/j.ajnc.20190801.14
Page(s)	32-46
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Orthogonal Frequency Division Multiplexing (OFDM), Index Modulation (IM), Pairwise Error Probability (PEP), Adaptive Modulation

References

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[8]	I. Aboharba, H. Boud, Q. M. Rahman, and R. K. Rao, “Performance analysis of a low-complexity detection for OFDM Index Modulation over Nakagami-m fading,” in 2017 IEEE 30th Canadian Conference on Electrical and Computer Engineering (CCECE), April 2017, pp. 1–4.
[9]	I. Aboharba, H. Boud, Q. M. Rahman, and R. K. Rao, “On the performance of ofdm index modulation over nakagami fading channels,” in 2017 IEEE 30th Canadian Conference on Electrical and Computer Engineering (CCECE), April 2017, pp. 1–5.
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[16]	Hamed, M. Alsharef, and R. K. Rao, “Analysis of energy and spectral efﬁciency in urban shadowing environment.” IAENG International Journal of Computer Science, vol. 43, no. 2, 2016.
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APA Style

Ibrahim Mokhtar Aboharba, Quazi Mehbubar Rahman, Raveendra Rao. (2019). Adaptive OFDM-IM System Over Faded Shadowing Channel. American Journal of Networks and Communications, 8(1), 32-46. https://doi.org/10.11648/j.ajnc.20190801.14

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ACS Style

Ibrahim Mokhtar Aboharba; Quazi Mehbubar Rahman; Raveendra Rao. Adaptive OFDM-IM System Over Faded Shadowing Channel. Am. J. Netw. Commun. 2019, 8(1), 32-46. doi: 10.11648/j.ajnc.20190801.14

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AMA Style

Ibrahim Mokhtar Aboharba, Quazi Mehbubar Rahman, Raveendra Rao. Adaptive OFDM-IM System Over Faded Shadowing Channel. Am J Netw Commun. 2019;8(1):32-46. doi: 10.11648/j.ajnc.20190801.14

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@article{10.11648/j.ajnc.20190801.14,
  author = {Ibrahim Mokhtar Aboharba and Quazi Mehbubar Rahman and Raveendra Rao},
  title = {Adaptive OFDM-IM System Over Faded Shadowing Channel},
  journal = {American Journal of Networks and Communications},
  volume = {8},
  number = {1},
  pages = {32-46},
  doi = {10.11648/j.ajnc.20190801.14},
  url = {https://doi.org/10.11648/j.ajnc.20190801.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajnc.20190801.14},
  abstract = {Spectral efﬁciency (SE) and energy efﬁciency (EE) play major roles in evaluating the quality of service (QoS) of a wireless communication system. Designing an efﬁcient wireless communication system requires trade-off between these two parameters. Orthogonal frequency division multiplexing technique with Index Modulation (OFDM-IM) has been introduced in the literature to increase the SE compared to traditional OFDM. In this paper, an adaptive technique with OFDM-IM is introduced in an M-QAM based scheme to maintain a guaranteed level of average bit error probability (ABEP) with enhanced SE. It has been demonstrated that by adaptively varying the number of active subcarriers and modulation levels in M-QAM scheme, maximum EE can also be achieved for an acceptable ABEP. The closed-form expressions of ABEP and pairwise error probability (PEP) for OFDM-IM with M-ary QAM modulation are derived and examined over the composite Nakagami-m Gamma (NG) fading channel model using greedy detection (GD). In addition, the performance of adaptive OFDM-IM with M-QAM Modulation scheme is evaluated in terms of efﬁciency metrics, outage probability, and ABEP. The obtained results show that the adaptive scheme offers high potential for accomplishing signiﬁcant improvement in SE and EE while maintaining acceptable ABEP even under severe channel impairment.},
 year = {2019}
}

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TY  - JOUR
T1  - Adaptive OFDM-IM System Over Faded Shadowing Channel
AU  - Ibrahim Mokhtar Aboharba
AU  - Quazi Mehbubar Rahman
AU  - Raveendra Rao
Y1  - 2019/07/17
PY  - 2019
N1  - https://doi.org/10.11648/j.ajnc.20190801.14
DO  - 10.11648/j.ajnc.20190801.14
T2  - American Journal of Networks and Communications
JF  - American Journal of Networks and Communications
JO  - American Journal of Networks and Communications
SP  - 32
EP  - 46
PB  - Science Publishing Group
SN  - 2326-8964
UR  - https://doi.org/10.11648/j.ajnc.20190801.14
AB  - Spectral efﬁciency (SE) and energy efﬁciency (EE) play major roles in evaluating the quality of service (QoS) of a wireless communication system. Designing an efﬁcient wireless communication system requires trade-off between these two parameters. Orthogonal frequency division multiplexing technique with Index Modulation (OFDM-IM) has been introduced in the literature to increase the SE compared to traditional OFDM. In this paper, an adaptive technique with OFDM-IM is introduced in an M-QAM based scheme to maintain a guaranteed level of average bit error probability (ABEP) with enhanced SE. It has been demonstrated that by adaptively varying the number of active subcarriers and modulation levels in M-QAM scheme, maximum EE can also be achieved for an acceptable ABEP. The closed-form expressions of ABEP and pairwise error probability (PEP) for OFDM-IM with M-ary QAM modulation are derived and examined over the composite Nakagami-m Gamma (NG) fading channel model using greedy detection (GD). In addition, the performance of adaptive OFDM-IM with M-QAM Modulation scheme is evaluated in terms of efﬁciency metrics, outage probability, and ABEP. The obtained results show that the adaptive scheme offers high potential for accomplishing signiﬁcant improvement in SE and EE while maintaining acceptable ABEP even under severe channel impairment.
VL  - 8
IS  - 1
ER  -

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Author Information

Ibrahim Mokhtar Aboharba

Department of Electrical and Computer Engineering, Western University, London, Canada
Quazi Mehbubar Rahman

Department of Electrical and Computer Engineering, Western University, London, Canada
Raveendra Rao

Department of Electrical and Computer Engineering, Western University, London, Canada

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APA Style

Ibrahim Mokhtar Aboharba, Quazi Mehbubar Rahman, Raveendra Rao. (2019). Adaptive OFDM-IM System Over Faded Shadowing Channel. American Journal of Networks and Communications, 8(1), 32-46. https://doi.org/10.11648/j.ajnc.20190801.14

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ACS Style

Ibrahim Mokhtar Aboharba; Quazi Mehbubar Rahman; Raveendra Rao. Adaptive OFDM-IM System Over Faded Shadowing Channel. Am. J. Netw. Commun. 2019, 8(1), 32-46. doi: 10.11648/j.ajnc.20190801.14

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AMA Style

Ibrahim Mokhtar Aboharba, Quazi Mehbubar Rahman, Raveendra Rao. Adaptive OFDM-IM System Over Faded Shadowing Channel. Am J Netw Commun. 2019;8(1):32-46. doi: 10.11648/j.ajnc.20190801.14

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@article{10.11648/j.ajnc.20190801.14,
  author = {Ibrahim Mokhtar Aboharba and Quazi Mehbubar Rahman and Raveendra Rao},
  title = {Adaptive OFDM-IM System Over Faded Shadowing Channel},
  journal = {American Journal of Networks and Communications},
  volume = {8},
  number = {1},
  pages = {32-46},
  doi = {10.11648/j.ajnc.20190801.14},
  url = {https://doi.org/10.11648/j.ajnc.20190801.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajnc.20190801.14},
  abstract = {Spectral efﬁciency (SE) and energy efﬁciency (EE) play major roles in evaluating the quality of service (QoS) of a wireless communication system. Designing an efﬁcient wireless communication system requires trade-off between these two parameters. Orthogonal frequency division multiplexing technique with Index Modulation (OFDM-IM) has been introduced in the literature to increase the SE compared to traditional OFDM. In this paper, an adaptive technique with OFDM-IM is introduced in an M-QAM based scheme to maintain a guaranteed level of average bit error probability (ABEP) with enhanced SE. It has been demonstrated that by adaptively varying the number of active subcarriers and modulation levels in M-QAM scheme, maximum EE can also be achieved for an acceptable ABEP. The closed-form expressions of ABEP and pairwise error probability (PEP) for OFDM-IM with M-ary QAM modulation are derived and examined over the composite Nakagami-m Gamma (NG) fading channel model using greedy detection (GD). In addition, the performance of adaptive OFDM-IM with M-QAM Modulation scheme is evaluated in terms of efﬁciency metrics, outage probability, and ABEP. The obtained results show that the adaptive scheme offers high potential for accomplishing signiﬁcant improvement in SE and EE while maintaining acceptable ABEP even under severe channel impairment.},
 year = {2019}
}

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TY  - JOUR
T1  - Adaptive OFDM-IM System Over Faded Shadowing Channel
AU  - Ibrahim Mokhtar Aboharba
AU  - Quazi Mehbubar Rahman
AU  - Raveendra Rao
Y1  - 2019/07/17
PY  - 2019
N1  - https://doi.org/10.11648/j.ajnc.20190801.14
DO  - 10.11648/j.ajnc.20190801.14
T2  - American Journal of Networks and Communications
JF  - American Journal of Networks and Communications
JO  - American Journal of Networks and Communications
SP  - 32
EP  - 46
PB  - Science Publishing Group
SN  - 2326-8964
UR  - https://doi.org/10.11648/j.ajnc.20190801.14
AB  - Spectral efﬁciency (SE) and energy efﬁciency (EE) play major roles in evaluating the quality of service (QoS) of a wireless communication system. Designing an efﬁcient wireless communication system requires trade-off between these two parameters. Orthogonal frequency division multiplexing technique with Index Modulation (OFDM-IM) has been introduced in the literature to increase the SE compared to traditional OFDM. In this paper, an adaptive technique with OFDM-IM is introduced in an M-QAM based scheme to maintain a guaranteed level of average bit error probability (ABEP) with enhanced SE. It has been demonstrated that by adaptively varying the number of active subcarriers and modulation levels in M-QAM scheme, maximum EE can also be achieved for an acceptable ABEP. The closed-form expressions of ABEP and pairwise error probability (PEP) for OFDM-IM with M-ary QAM modulation are derived and examined over the composite Nakagami-m Gamma (NG) fading channel model using greedy detection (GD). In addition, the performance of adaptive OFDM-IM with M-QAM Modulation scheme is evaluated in terms of efﬁciency metrics, outage probability, and ABEP. The obtained results show that the adaptive scheme offers high potential for accomplishing signiﬁcant improvement in SE and EE while maintaining acceptable ABEP even under severe channel impairment.
VL  - 8
IS  - 1
ER  -

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