Low-overhead Multi-antenna-enabled Random Access for Machine-type Communications with Low Mobility

被引：0
作者：
Zou, Yihan [1 ]
Kim, Kwang Taik [1 ]
Lin, Xiaojun [1 ]
Chiang, Mung [1 ]
Ding, Zhi [2 ]
Wichman, Risto [3 ]
Hamalainen, Jyri [3 ]
机构：
[1] Purdue Univ, Sch ECE, W Lafayette, IN 47907 USA
[2] Univ Calif Davis, ECE, Davis, CA USA
[3] Aalto Univ, Sch Elect Engn, Espoo, Finland
来源：
2019 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM) | 2019年
基金：
芬兰科学院; 美国国家科学基金会;
关键词：
D O I：
10.1109/globecom38437.2019.9013303
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A pseudo-random beamforming (PRBF) based random access (RA) system is proposed to enable uplink (UL) machine-type communications (MTC) with ultra low signaling overheads. Specifically, a pseudo random (PR) sequence is used as public information to coordinate the beamforming vectors used at the base station (BS) and the devices. Within the coherence time window, each device distributively determines in advance the "good" time slots and receiving beams for transmission. This UL protocol reduces the overheads due to the feedback of channel state information and the control signals for centralized scheduling. This paper derives the throughput and user scaling of the proposed M-PRBF-CA protocol for achieving spatial multiplexing gain, under both an i.i.d. slow fading channel and a correlated slow fading channel. Our simulation results confirm the analysis in both fading channel models.
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页数：6
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