Interference mitigation using random antenna selection in millimeter wave beamforming system

被引：2
作者：
Lim, Woochang [1 ]
Kwon, Girim [2 ]
Park, Hyuncheol [2 ]
机构：
[1] Agcy Def Dev, POB 35, Daejeon 305600, South Korea
[2] Korea Adv Inst Sci & Technol, Sch Elect Engn, Daehak Ro 291, Daejeon 305338, South Korea
来源：
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | 2017年
基金：
新加坡国家研究基金会;
关键词：
Millimeter wave; Beamforming; Antenna selection; Large array; EQUAL GAIN TRANSMISSION;
D O I：
10.1186/s13638-017-0868-5
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：
In multi-user beamforming systems, the inter-user interference are controlled by spatial filtering. Since the implementation of digital beamforming is difficult due to high hardware cost of large array system, the analog beamforming system with one phase shifter at each antenna element is considered with antenna selection scheme. However, the beamwidth is not sufficiently narrow to perfectly remove the interference due to limited size of antenna arrays. To mitigate the interference, we propose the random antenna selection system in millimeter wave channel. The random antenna selection expands the effective array size so that the beamwidth becomes narrow. We compare the beamwidth of conventional fixed antenna selection with random antenna selection and analyze the amount of interference for each selection scheme. Theoretical analysis and bit error rate simulation results indicate that the beamforming with random antenna selection can take advantage of large array.
引用
收藏
页数：16
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