A Generic Layer Pruning Method for Signal Modulation Recognition Deep Learning Models
This work addresses deployment challenges in communication systems by reducing model complexity, though it is incremental as it builds on existing pruning techniques.
The paper tackles the high computational complexity and large model sizes of deep neural networks in signal modulation recognition by proposing a novel layer pruning method, achieving efficiency and effectiveness across five datasets compared to state-of-the-art baselines.
With the successful application of deep learning in communications systems, deep neural networks are becoming the preferred method for signal classification. Although these models yield impressive results, they often come with high computational complexity and large model sizes, which hinders their practical deployment in communication systems. To address this challenge, we propose a novel layer pruning method. Specifically, we decompose the model into several consecutive blocks, each containing consecutive layers with similar semantics. Then, we identify layers that need to be preserved within each block based on their contribution. Finally, we reassemble the pruned blocks and fine-tune the compact model. Extensive experiments on five datasets demonstrate the efficiency and effectiveness of our method over a variety of state-of-the-art baselines, including layer pruning and channel pruning methods.