arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1801.05089cs.ITmath.IT
收藏

用于5G免授权大规模接入的Reed-Muller序列

Reed-Muller Sequences for 5G Grant-free Massive Access

Huazi Zhang, Rong Li, Jun Wang, Yan Chen, Zhaoyang Zhang

摘要:

我们提出使用二阶Reed-Muller(RM)序列用于5G免授权接入中的用户识别。RM序列的优点主要在于两个方面,(i)支持大得多的用户空间,因此具有较低的冲突概率,以及(ii)较低的检测复杂度。这两个特性对于满足5G中的大规模连接($10^7$链路/km $^2$)、超可靠和低延迟要求至关重要,例如,具有$\leq 10^{-4}$分组出错率的单次传输($\leq 1$ ms)。然而,在序列空间扩展过程中引入的非正交性导致检测性能变差。在本文中,我们提出了一个抗噪声的检测算法,随着分层序列的建设,以满足苛刻的要求。在窄带和基于OFDM的场景中的链路级仿真表明,RM序列适用于5G。

英文摘要:

We propose to use second order Reed-Muller (RM) sequence for user identification in 5G grant-free access. The benefits of RM sequences mainly lie in two folds, (i) support of much larger user space, hence lower collision probability and (ii) lower detection complexity. These two features are essential to meet the massive connectivity ($10^7$ links/km$^2$), ultra-reliable and low-latency requirements in 5G, e.g., one-shot transmission ($\leq 1$ms) with $\leq 10^{-4}$ packet error rate. However, the non-orthogonality introduced during sequence space expansion leads to worse detection performance. In this paper, we propose a noise-resilient detection algorithm along with a layered sequence construction to meet the harsh requirements. Link-level simulations in both narrow-band and OFDM-based scenarios show that RM sequences are suitable for 5G.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑