分层稀疏向量传输提升多用户超可靠低时延通信性能
Hierarchical Sparse Vector Transmission for Ultra Reliable and Low Latency Communications
- 将信息分为公共与私有部分，通过非零段索引和块长编码分别传输
- 仿真显示块错误率优于当前最优稀疏向量传输方案
- 适合高可靠性低时延场景，如工业控制与车联网
稀疏向量传输（SVT）是实现超可靠低时延通信（URLLC）的有前景技术。本文提出一种面向多用户URLLC场景的分层SVT方案。该方案将传输比特分为公共与私有部分：公共信息通过稀疏向量中非零段的索引传递，各用户私有信息则嵌入具有特定块长的非零块中。接收端先从检测到的非零段恢复公共比特，再根据对应的非零块索引解码用户专属私有比特。仿真结果表明，所提方案在块错误率方面优于当前最先进的SVT方案。
原文摘要 · Abstract (English)
Sparse vector transmission (SVT) is a promising candidate technology for achieving ultra-reliable low-latency communication (URLLC). In this paper, a hierarchical SVT scheme is proposed for multi-user URLLC scenarios. The hierarchical SVT scheme partitions the transmitted bits into common and private parts. The common information is conveyed by the indices of non-zero sections in a sparse vector, while each user's private information is embedded into non-zero blocks with specific block lengths. At the receiver, the common bits are first recovered from the detected non-zero sections, followed by user-specific private bits decoding based on the corresponding non-zero block indices. Simulation results show the proposed scheme outperforms state-of-the-art SVT schemes in terms of block error rate.
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