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Optimizing adaptive modulation technique using standard propagation model for enhanced wireless communication
Rahim Khan1, Zahid Ullah Khan2, Sher Taj3
1College of Information and Communication Engineering, Harbin Engineering University, Harbin150001, China.
Scientific Reports
|August 21, 2025
Summary
This study introduces an adaptive modulation technique integrated with the Standard Propagation Model (SPM) to improve wireless communication efficiency. The SPM-enhanced system significantly reduces Bit Error Rate (BER) and boosts spectral efficiency for long-range links.
Area of Science:
- Wireless Communication Systems
- Signal Processing
- Telecommunications Engineering
Background:
- Modern wireless systems face limitations like packet loss and low spectral efficiency.
- Existing communication paradigms require enhancement for better performance.
Purpose of the Study:
- To enhance communication efficiency in wireless systems using an adaptive modulation technique.
- To minimize Bit Error Rate (BER) and maximize throughput for long-range cellular links.
- To optimize Standard Propagation Model (SPM) parameters for improved bandwidth utilization.
Main Methods:
- Leveraged an adaptive modulation technique integrated with the Standard Propagation Model (SPM).
- Evaluated performance across Additive White Gaussian Noise (AWGN), Rayleigh, and Rician fading models.
- Employed an advanced optimization algorithm to dynamically select SPM parameters.
Main Results:
- Achieved a target BER of 10⁻² and enhanced spectral efficiency for 64-QAM modulation over a 6 km cell radius.
- Demonstrated significant Signal-to-Interference-plus-Noise Ratio (SINR) improvements: 40% (AWGN), 43% (Rayleigh), and 41% (Rician).
- SPM-enhanced system enabled stable 64-QAM deployment with superior SINR and reduced BER compared to non-SPM methods.
Conclusions:
- The proposed SPM-integrated adaptive modulation technique effectively enhances wireless communication efficiency.
- The system demonstrates robust performance across diverse channel conditions, outperforming conventional approaches.
- Optimized SPM parameters are crucial for achieving high spectral efficiency and low BER in long-range cellular links.
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