Robust Synchronization Waveform Design for Massive IoT

被引：9
|
作者：
Zhang, Jingjing [1 ]
Wang, Mao [2 ]
Hua, Min [1 ]
Yang, Wenjie [1 ]
You, Xiaohu [2 ]
机构：
[1] Nanjing Univ Sci & Technol, Nanjing 210092, Jiangsu, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 211102, Jiangsu, Peoples R China
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2017年 / 16卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Massive low-power Internet-of-Things (mIoT); 5G mIoT waveform; synchronization waveform; system acquisition; coverage extension; frequency offset; NONORTHOGONAL MULTIPLE-ACCESS; CHALLENGES; SYSTEMS;
D O I：
10.1109/TWC.2017.2750138
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Machine-type communication (MTC) is the key technology to support data transfer among devices (sensors and actuators) in Internet of Things (IoT). However, MTC, especially when applied to massive low-power IoT (mIoT), poses some unique and serious challenges due to the low-cost and low-power nature of an mIoT device. One of the most challenging issues is providing a robust way for an mIoT device to acquire the network under a large frequency offset/error (due to the use of a low-cost crystal oscillator) and a low operating SNR (due to the extended coverage). We address the issues in the existing mIoT system acquisition, particularly the initial synchronization waveform detection, and derive a new synchronization waveform that is more robust in an mIoT environment. The mathematical approach provides a useful analytical insight into the design of the synchronization signal waveform for the 5G mIoT system.
引用
收藏
页码：7551 / 7559
页数：9
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