An Evaluation of Orbital Angular Momentum Multiplexing Technology

Applied Sciences

Hirofumi Sasaki¹  Yasunori Yagi¹  Takashi Shimizu¹  Doohwan Lee¹  Hiroyuki Fukumoto¹ 

[1] NTT Network Innovation Laboratories, NTT Corporation, 1-1 Hikarinooka, Yokosuka-Shi 239-0847, Japan;

关键词: orbital angular momentum multiplexing;    OAM;    OAM-MIMO;    28 GHz;    uniform circular array;    dielectric lens;   

DOI  :  10.3390/app9091729

来源: DOAJ

【 摘 要 】

This paper reports our investigation of wireless communication performance obtained using orbital angular momentum (OAM) multiplexing, from theoretical evaluation to experimental study. First, we show how we performed a basic theoretical study on wireless OAM multiplexing performance regarding modulation, demodulation, multiplexing, and demultiplexing. This provided a clear picture of the effects of mode attenuation and gave us insight into the potential and limitations of OAM wireless communications. Then, we expanded our study to experimental evaluation of a dielectric lens and end-to-end wireless transmission on 28 gigahertz frequency bands. To overcome the beam divergence of OAM multiplexing, we propose a combination of multi-input multi-output (MIMO) and OAM technology, named OAM-MIMO multiplexing. We achieved 45 Gbps (gigabits per second) throughput using OAM multiplexing with five OAM modes. We also experimentally demonstrated the effectiveness of the proposed OAM-MIMO multiplexing using a total of 11 OAM modes. Experimental OAM-MIMO multiplexing results reached a new milestone for point-to-point transmission rates when 100 Gbps was achieved at a 10-m transmission distance.

【 授权许可】

Unknown