Low-Complexity OFDM Deep Neural Receivers

Ankit Gupta; Onur Dizdar; Yun Chen; Fehmi Emre Kadan; Ata Sattarzadeh; Stephen Wang

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arXiv · 2512.05249

Low-Complexity OFDM Deep Neural Receivers

Ankit Gupta·Onur Dizdar·Yun Chen·Fehmi Emre Kadan·Ata Sattarzadeh·Stephen Wang

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Abstract

Deep neural receivers (NeuralRxs) for Orthogonal Frequency Division Multiplexing (OFDM) signals are proposed for enhanced decoding performance compared to their signal-processing based counterparts. However, the existing architectures ignore the required number of epochs for training convergence and floating-point operations (FLOPs), which increase significantly with improving performance. To tackle these challenges, we propose a new residual network (ResNet) block design for OFDM NeuralRx. Specifically, we leverage small kernel sizes and dilation rates to lower the number of FLOPs (NFLOPs) and uniform channel sizes to reduce the memory access cost (MAC). The ResNet block is designed with novel channel split and shuffle blocks, element-wise additions are removed, with Gaussian error linear unit (GELU) activations. Extensive simulations show that our proposed NeuralRx reduces NFLOPs and improves training convergence while improving the decoding accuracy.

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Ankit Gupta, Onur Dizdar, Yun Chen, Fehmi Emre Kadan, Ata Sattarzadeh, Stephen Wang. 2025-12-04. Low-Complexity OFDM Deep Neural Receivers. https://arxiv.org/abs/2512.05249

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