An Experimental Demonstration of over 100 Gbit/s OAM Multiplexing Transmission at a Distance of 100 m on 40 GHz Band

Sasaki, Hirofumi; Yagi, Yasunori; Yamada, Takayuki; Semoto, Tomoki; Lee, Doohwan

doi:10.1109/iccworkshops49005.2020.9145429

Cited by 17 publications

(10 citation statements)

References 19 publications

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“…The highest bit rate of OAM type is 32 Gbit/s using 60-GHz band, 2 modes, polarization duplex, and 16QAM [13]. The one of OAM-MIMO type is 100 Gbit/s using a 40-GHz band using 7 modes, polarization duplex, and 256QAM [19]. However, their bandwidth is limited to less than 4% and the data were processed offline.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Millimeter-Wave Multiplexed Wideband Wireless Link Using Rectangular-Coordinate Orthogonal Multiplexing (ROM) Antennas

Tomura

Hirokawa

Ali

et al. 2021

J. Lightwave Technol.

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This paper is the first demonstration of multiplexed wideband data transmission in the millimeter-wave range using rectangular-coordinate orthogonal multiplexing (ROM) antennas. This spatial wireless multiplex communication method can be applied at several hundred GHz for further improvements in the data rate because much wider bandwidth is available and this multiplexing method does not require any signal processing. The multiplexing is achieved through the spatial eigenmodes of a novel antenna based on a rectangular coordinate system and magic-T which eliminates the need for computational signal processing efforts. The aperture distributions of these spatial eigenmodes are designed to have different polarities to avoid crosstalk and operate over a wide bandwidth range. We demonstrate their performance with four eigenmodes, achieving crosstalk between modes below −37.8 dB over a 14.6% relative bandwidth (57-66 GHz). We have introduced these antennas on a photonics-enabled real-time wireless data transmission, transmitting over two channels simultaneously, without any signal processing at the transmitter (multiplex) or the receiver (demultiplex). The two multiplexed channels show a total data rate up to 9.0 Gbps at most (5.875 Gbps and 3.125 Gbps for each channel) limited by the bandwidth of the low noise amplifiers at the receiver. The measured bit error rate (BER) is below the forward error correction (FEC) limit.

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Section: Discussionmentioning

confidence: 99%

“…To overcome the hardware limitations, OAM-MIMO has been proposed and successfully demonstrated multiplex communication [17]- [19]. However, when the carrier frequency becomes very high and wide bandwidth is used, software processing becomes difficult.…”

Section: Introductionmentioning

confidence: 99%

Millimeter-Wave Multiplexed Wideband Wireless Link Using Rectangular-Coordinate Orthogonal Multiplexing (ROM) Antennas

Tomura

Hirokawa

Ali

et al. 2021

J. Lightwave Technol.

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“…Since the famous Venice experiment [5] was reported, a series of OAM based MDM experiments in the line-of-sight (LoS) scenario have been published continually [6]- [9]. In [9], NTT Corporation has demonstrated an exhilarating work, in which they have successfully carried out an experiment of 100 Gbit/s OAM transmission at a distance of 100 m. Besides, OAM wave has been extended to other application fields including radar imaging and detection [10], [11], eigenmodebeamforming [12], [13] and rotational doppler measurement [14], etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Plane Spiral OAM Mode-Group Based MIMO Communications

Xiong

Zheng

Zhu

et al. 2022

IEEE Trans. Antennas Propagat.

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Spatial division multiplexing using conventional orbital angular momentum (OAM) has become a well-known physical layer transmission method over the past decade. The mode-group (MG) superposed by specific single mode plane spiral OAM (PSOAM) waves has been proved to be a flexible beamforming method to achieve the azimuthal pattern diversity, which inherits the spiral phase distribution of conventional OAM wave. Thus, it possesses both the beam directionality and vorticity. In this paper, it's the first time to show and verify novel PSOAM MG based multiple-in-multiple-out (MIMO) communication link (MG-MIMO) experimentally in a line-ofsight (LoS) scenario. A compact multi-mode PSOAM antenna is demonstrated experimentally to generate multiple independent controllable PSOAM waves, which can be used for constructing MGs. After several proof-of-principle tests, it has been verified that the beam directionality gain of MG can improve the receiving signal-to-noise (SNR) level in an actual system, meanwhile, the vorticity can provide another degree of freedom (DoF) to reduce the spatial correlation of MIMO system. Furthermore, a tentative long-distance transmission experiment operated at 10.2 GHz has been performed successfully at a distance of 50 m with a singleway spectrum efficiency of 3.7 bits/s/Hz/stream. The proposed MG-MIMO may have potential in the long-distance LoS backhaul scenario.

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“…In the generation of OAM signals, a uniform circular array (UCA) enables simultaneous transmission of multiple modes and can be regarded as a practical approach for realizing OAM multiplexing [4,6]. Moreover, OAM signals can adopt polarization multiplexing as well as mode multiplexing to enhance the system capacity further [7,8,9,10,11]. Several meaningful studies have analytically [7,8,9] and experimentally [10,11] investigated polarized OAM multiplexing.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, OAM signals can adopt polarization multiplexing as well as mode multiplexing to enhance the system capacity further [7,8,9,10,11]. Several meaningful studies have analytically [7,8,9] and experimentally [10,11] investigated polarized OAM multiplexing. Especially in [7,8], the effectiveness of polarization on UCA-based OAM multiplexing has been analytically investigated in comparison with traditional OAM multiplexing at a constant transmission power.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness evaluation of polarization in OAM multiplexing

et al. 2021

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This paper investigates the system capacity of polarized orbital angular momentum (OAM) multiplexing by comparing it with OAM multiplexing without polarization for the same number of antenna elements. Since the same number of antenna elements is assumed for both approaches, their performances can be compared under the same number of simultaneous OAM streams, thereby allowing the effectiveness of polarization on UCA-based OAM multiplexing to be examined. Numerical results, obtained through computer simulations, provide the mode selectivity and system capacity with respect to link distance and carrier frequency.

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An Experimental Demonstration of over 100 Gbit/s OAM Multiplexing Transmission at a Distance of 100 m on 40 GHz Band

Cited by 17 publications

References 19 publications

Millimeter-Wave Multiplexed Wideband Wireless Link Using Rectangular-Coordinate Orthogonal Multiplexing (ROM) Antennas

Millimeter-Wave Multiplexed Wideband Wireless Link Using Rectangular-Coordinate Orthogonal Multiplexing (ROM) Antennas

Experimental Study of Plane Spiral OAM Mode-Group Based MIMO Communications

Effectiveness evaluation of polarization in OAM multiplexing

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