标题： 一种无源多址接入的耦合压缩感知方案 显示英文标题

标题： A Coupled Compressive Sensing Scheme for Unsourced Multiple Access

摘要： 本文介绍了一种用于无源多址通信问题的新范式。 这种分而治之的方法利用了压缩感知和前向纠错的最新进展，以产生一种计算高效的算法。 在所提出的框架中，每个活动设备首先将其数据分成几个子块，然后使用系统线性块码添加冗余。 随后采用压缩感知技术来恢复子块，并通过一种低复杂度的基于树的算法将各部分连接起来以获得原始消息。 数值结果表明，所提出的方案优于其他现有的实用编码方案。 测量的性能大约距离 Polyanskiy 可实现极限$4.3$~dB，该极限是在没有复杂度约束的情况下获得的。 显示英文摘要

摘要： This article introduces a novel paradigm for the unsourced multiple-access communication problem. This divide-and-conquer approach leverages recent advances in compressive sensing and forward error correction to produce a computationally efficient algorithm. Within the proposed framework, every active device first partitions its data into several sub-blocks, and subsequently adds redundancy using a systematic linear block code. Compressive sensing techniques are then employed to recover sub-blocks, and the original messages are obtained by connecting pieces together using a low-complexity tree-based algorithm. Numerical results suggest that the proposed scheme outperforms other existing practical coding schemes. Measured performance lies approximately $4.3$~dB away from the Polyanskiy achievability limit, which is obtained in the absence of complexity constraints.