An Experimental Demonstration of 28 GHz Band Wireless OAM-MIMO (Orbital Angular Momentum Multi-Input and Multi-Output) Multiplexing

This paper presents wireless OAM (orbital angular momentum) and OAM-MIMO (multi-input and multi-output) multiplexing in a 28 GHz frequency band. We have implemented transmission (Tx) and reception (Rx) antennas consisting of multiple uniform circular arrays (UCAs) to confirm the feasibility. Each UCA can concurrently transmit or receive five OAM mode signals (0, ±1, ±2). Using implemented antennas, we rectified mode-selective Rx SNR degradation caused by the inherent nature of OAM beams. With a combination of antenna selection and receiver diversity we have achieved a 45 Gbps transmission rate using five OAM modes. We also experimentally demonstrated the effectiveness of the OAM-MIMO multiplexing by using a total of eleven OAM modes (three OAM 0 modes and two sets of OAM ±1 and ±2 modes). Experimental results reached a new milestone in point-to-point transmission rates by achieving 100 Gbps at 10 m transmission distance.

[1]  Ksenia Sharshavina,et al.  An 8×8 Butler matrix for generation of waves carrying Orbital Angular Momentum (OAM) , 2014, The 8th European Conference on Antennas and Propagation (EuCAP 2014).

[2]  A. Willner,et al.  High-capacity millimetre-wave communications with orbital angular momentum multiplexing , 2014, Nature Communications.

[3]  Yan Yan,et al.  Line-of-Sight Millimeter-Wave Communications Using Orbital Angular Momentum Multiplexing Combined With Conventional Spatial Multiplexing , 2017, IEEE Transactions on Wireless Communications.

[4]  Liu Liu,et al.  Beam axis detection and alignment for uniform circular array-based orbital angular momentum wireless communication , 2016, IET Commun..

[5]  Stuart D. Walker,et al.  4-Gbps Uncompressed Video Transmission over a 60-GHz Orbital Angular Momentum Wireless Channel , 2013, IEEE Wireless Communications Letters.

[6]  Zeyu Zhao,et al.  Generation and detection of orbital angular momentum via metasurface , 2016, Scientific reports.

[7]  Takayuki Kobayashi,et al.  A Sparsity Managed Adaptive MIMO Equalization for Few-Mode Fiber Transmission With Various Differential Mode Delays , 2016, Journal of Lightwave Technology.

[8]  Doohwan Lee,et al.  Orbital Angular Momentum (OAM) Multiplexing: An Enabler of a New Era of Wireless Communications , 2017, IEICE Trans. Commun..

[9]  Andreas F. Molisch,et al.  A dual-channel 60 GHz communications link using patch antenna arrays to generate data-carrying orbital-angular-momentum beams , 2016, 2016 IEEE International Conference on Communications (ICC).

[10]  Zhijun Zhang,et al.  Generation of OAM Radio Waves Using Circular Vivaldi Antenna Array , 2013 .

[11]  A. Willner.  Communication with a twist , 2016, IEEE Spectrum.

[12]  Rashaunda M. Henderson,et al.  Let's Do the Twist!: Radiators, Experiments, and Techniques to Generate Twisted Waves at Radio Frequencies , 2017, IEEE Microwave Magazine.

[13]  Matteo Oldoni,et al.  Near-Field Experimental Verification of Separation of OAM Channels , 2015, IEEE Antennas and Wireless Propagation Letters.

[14]  Ryuji Zenkyu,et al.  An experimental study on OAM mode-multiplexing with dielectric lens fed by uniform circular array , 2017, 2017 International Symposium on Antennas and Propagation (ISAP).