窄带物联网接入信号设计  

Initial access signal design for narrowband Internet of Things

作　　者：张晓丹[1] 仝勋伟[2] 刘锟[2] 鲁照华[2] 

机构地区：[1]深圳信息职业技术学院,深圳518172 [2]中兴通讯股份有限公司,深圳518057

出　　处：《现代电信科技》2017年第3期18-26,共9页Modern Science & Technology of Telecommunications

摘　　要：提出两种窄带物联网的物理随机接入信道的设计方案,包括多子载波方案和单子载波方案。多子载波方案遵循LTE接入信号的设计原理,对接入信道带宽、子载波间隔以及序列的选取进行了重新设计;单子载波方案将终端全部功率集中在单个子载波上,可以提供更高的功率谱密度,更适合恶劣的无线信道环境下终端接入需求。仿真结果表明,给出的接入信号设计方案可满足窄带物联网的接入需求。Two kinds of narrowband Internet of things physical random access channel design schemes are proposed, including single tone scheme and multi-tone scheme. Multi-tone scheme follows LTE PRACH design principle, which bandwidth/subcarrier spacing and sequence are redesigned to meet the requirements of random access. Single tone scheme, which all Tx power concentrated in a single subcarrier, provides higher power spectral density and is more suitable in harsh wireless channel environment. In this paper, based on the analysis and simulation, the single tone design can meet the requirements of random access.

关 键 词：窄带物联网 物联网 随机接入信道 单子载波 多子载波 

分 类 号：TN911.2[电子电信—通信与信息系统]