An efficient adaptive modulation technique over realistic wireless communication channels based on distance and SINR

Rahim Khan; Qiang Yang; Alam Noor; Sohaib Bin Altaf Khattak; Liang Guo; Ahsan Bin Tufail

doi:10.1515/freq-2021-0066

Article

An efficient adaptive modulation technique over realistic wireless communication channels based on distance and SINR

Rahim Khan , Qiang Yang , Alam Noor , Sohaib Bin Altaf Khattak , Liang Guo and Ahsan Bin Tufail

Published/Copyright: August 20, 2021

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From the journal Frequenz Volume 76 Issue 1-2

Abstract

A growing trend has been observed in recent research in wireless communication systems. However, several limitations still exist, such as packet loss, limited bandwidth and inefficient use of available bandwidth that needs further investigation and research. In light of the above limitations, this paper uses adaptive modulation under various parameters, such as signal to interference plus noise ratio (SINR), and communication channel’s distances. The primary goal is to minimize bit error rate (BER), improve throughput and utilize the available bandwidth efficiently. Additionally, the impact of Additive White Gaussian Noise (AWGN), Rayleigh and Rician fading channels on the performance of various modulation schemes are also studied. The simulation results demonstrate that our proposed technique optimally improves the BER and spectral efficiency in the long-range communication as compared to the fixed modulation schemes under the co-channel interference of surrounding base stations. The results indicate that the performance of fixed modulation schemes is suitable only either at high SINR and low distance or at low SINR and high distance values. Moreover, on the other hand, its performance was suboptimal in the entire wireless communication channel due to high distortion and attenuation. Lastly, we also noted that BER performance in the AWGN channel is better than Rayleigh and Rician channels with Rayleigh channel exhibiting poor performance than the Rician channel.

Keywords: adaptive modulation; BER; different communication channels; M-PSK; M-QAM; SINR

Corresponding author: Qiang Yang, School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China, E-mail: yq@hit.edu.cn

Funding source: National Natural Science Foundation of China doi.org/10.13039/501100001809

Award Identifier / Grant number: 62031014

Funding source: Key Research and Development Program of Hainan Province (China)

Award Identifier / Grant number: ZDYF2019195

Acknowledgments

This work has been supported by the National Natural Science Foundation of China and Key Research and Development Program of Hainan Province (China).

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work has been supported by National Natural Science Foundation of China and Key Research and Development Program of Hainan Province (China). This research was funded by the National Natural Science Foundation of China under grant 62031014 and Key Research and Development Program of Hainan Province (China) under grant ZDYF2019195.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-03-12

Accepted: 2021-07-18

Published Online: 2021-08-20

Published in Print: 2022-01-27

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Articles in the same Issue

https://doi.org/10.1515/freq-2021-0066

Keywords for this article

adaptive modulation; BER; different communication channels; M-PSK; M-QAM; SINR