AI 中文总结
针对环境物联网硬件限制，提出基于张量的免授权随机接入方案用于初始接入消息，设备发送秩-1张量形式的短有效载荷副本，接收器经张量分解等操作进行联合检测等，实现吞吐量显著提升且保持发射机低复杂度。
AI 中文摘要
环境物联网（A-IoT）部署面临严格硬件限制，如低阶调制和简单收发器架构。我们针对这些限制，提出一种基于张量的免授权随机接入方案用于初始接入消息（Msg1）。每个设备在多个接入时机发送其短有效载荷的副本，其结构为秩-1张量。A-IoT接收器通过张量分解和连续干扰消除进行联合活动检测、信道估计和解码。结果表明，该方案在保持低复杂度发射机设计的同时，吞吐量比传统方案有显著提高。
英文摘要
Ambient Internet of Things (A-IoT) deployments impose stringent hardware constraints, including low-order modulations and simple transceiver architectures. We propose a tensor-based grant-free random access scheme for the initial access message (Msg1) tailored to these limitations. Each device transmits replicas of its short payload structured as a rank-1 tensor over multiple access occasions. The A-IoT receiver performs joint activity detection, channel estimation, and decoding via tensor decomposition and successive interference cancellation. Results show significant throughput gains over conventional schemes while preserving low-complexity transmitter designs.
Comments6 pages, 4 figures
