Adaptive Scaling and Spectrum-Aware Enhancement of O-LSDC for Robust MIMO Detection under Realistic Channel Conditions

International Journal of Electrical and Electronics Engineering

© 2026 by SSRG - IJEEE Journal

Volume 13 Issue 3

Year of Publication : 2026

Authors : Sagar Sutar, Chetan More

10.14445/23488379/IJEEE-V13I3P119

How to Cite?

Sagar Sutar, Chetan More, "Adaptive Scaling and Spectrum-Aware Enhancement of O-LSDC for Robust MIMO Detection under Realistic Channel Conditions," SSRG International Journal of Electrical and Electronics Engineering, vol. 13,  no. 3, pp. 260-274, 2026. Crossref, https://doi.org/10.14445/23488379/IJEEE-V13I3P119

Abstract:

Multiple-Input Multiple-Output (MIMO) systems have significant difficulties observing in strong signals because of inter-antenna interference, channel estimation errors, and signal-propagation errors due to the use of iterative cancellation-based detectors. These problems decrease the accuracy of detection and performance in different SNR and CSI. The paper proposes an ingenious detection system that involves adaptive scaling with spectral-domain analysis, which is known as Enhanced O-LSDC, as a way of eliminating these limitations. The method combines mutually adaptive scaling in which the cancellation mechanism is dynamically changed as a function of real-time SNR, CSI, and network behavior. It is also extended to deal with realistic impairments like imperfect CSI, multi-user interference, and error-propagation estimation, and also performs an analysis in the spectral domain to investigate signal distribution, coding energy, and spectral efficiency. The results of the simulation indicate that the proposed Enhanced O-LSDC outperforms the conventional fixed-scaling techniques in terms of bit-error rates and spectral efficiency, as well as offers more CSI uncertainty tolerance and performance variation with a wide range of SNR and channel conditions. These results suggest that the adaptive-scaling-based O-LSDC is a high-quality and computationally small detection strategy that can be used in next-generation wireless systems to support the demands of emerging 5G/6G MIMO structures.

Keywords:

MIMO, O-LSDC, Adaptive scaling, SNR, CSI, Spectrum analysis, 5G/6G.

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