کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

Automatic Modulation Recognition Based on a Dual-Branch Architecture and SNR-Aware Feature Adjustment

نویسندگان :

Bita Asgari¹ Samaneh Noroozi² Sajad Haghzad Klidbary³

1- University of Zanjan 2- University of Zanjan 3- University of Zanjan

کلمات کلیدی :

Automatic Modulation Recognition،SNR-Aware Feature Adjustment،Dual-Branch Architecture،Deep Learning

چکیده :

Automatic Modulation Recognition (AMR) in noisy environments, particularly at low Signal-to-Noise Ratios (SNRs), is prone to substantial performance degradation. In this paper, we propose a novel framework for robust low-SNR modulation recognition, featuring a dual-branch architecture that concurrently leverages two complementary signal representations: raw I/Q samples, and Amplitude-Phase Continuous Spectrum (APCS). An SNR-FiLM conditioning layer is incorporated to adaptively adjust the network's activations based on SNR levels. Evaluation on the RadioML2016.10a dataset demonstrates an overall accuracy improvement from 61.36% in the baseline model to 67.60%. In low-SNR scenarios, notable gains are achieved, with accuracy at -6 dB and -4 dB increasing from 52.45% and 67.00% to 70.09% and 81.68%, respectively.

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