NOC4SC: A Bandwidth-Efficient Multi-User Semantic Communication Framework for Interference-Resilient Transmission
Yunhao Wang, Shuai Ma, Pengfei He, Dahua Gao, Guangming Shi, Xiang Cheng

TL;DR
This paper introduces NOC4SC, a novel semantic communication framework that enables interference-resilient, bandwidth-efficient multi-user transmission using shared encoders and adaptive deep learning techniques.
Contribution
It presents a new non-orthogonal semantic communication scheme with adaptive SNR modulation and shared transformers, improving multi-user interference mitigation and spectral efficiency.
Findings
Achieves performance comparable to DeepJSCC-PNOMA
Outperforms existing multi-user SemCom methods
Effectively mitigates inter-user interference
Abstract
With the explosive growth of connected devices and emerging applications, current wireless networks are encountering unprecedented demands for massive user access, where the inter-user interference has become a critical challenge to maintaining high quality of service (QoS) in multi-user communication systems. To tackle this issue, we propose a bandwidth-efficient semantic communication paradigm termed Non-Orthogonal Codewords for Semantic Communication (NOC4SC), which enables simultaneous same-frequency transmission without spectrum spreading. By leveraging the Swin Transformer, the proposed NOC4SC framework enables each user to independently extract semantic features through a unified encoder-decoder architecture with shared network parameters across all users, which ensures that the user's data remains protected from unauthorized decoding. Furthermore, we introduce an adaptive NOC…
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Taxonomy
TopicsWireless Signal Modulation Classification · Advanced Wireless Communication Technologies · Indoor and Outdoor Localization Technologies
