4 × 4 MIMO architecture supporting IFoF-based analog indoor distributed antenna system for 5G mobile communications

Kim, Joon‐Young; Sung, Minkyu; Kim, Eon‐Sang; Cho, Seung-Hyun; Lee, Jong Hyun

doi:10.1364/oe.26.028216

Cited by 19 publications

(6 citation statements)

References 13 publications

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“…It is observed that 5G network technology would enable 20 Gb/s peak rate per cell and 1000 times data traffic compared to the existing 4G LTE [94]. 5G systems can support MIMO technology, enhancing the spectral efficiency and satisfying the high data rate requirements for today's mobile devices [67].…”

Section: G Mimo Signals Over Fibrementioning

confidence: 99%

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A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

et al. 2020

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Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.

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Section: G Mimo Signals Over Fibrementioning

confidence: 99%

“…In addition, the wireless transmission in only over 2.2 m. The extreme bit rate is equal to 4.8 Gbit/s over a bandwidth of 1.96 GHz. An analogue indoor dispersed antenna system (DAS) for 5G mobile communications, which supports 4 × 4 MIMO, is demonstrated in [94]. The maximum bit rate is identical to 5.3 Gbit/s.…”

Section: G Mimo Signals Over Fibrementioning

confidence: 99%

A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

et al. 2020

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“…Nowadays, because of its rapid transfer rate and higher performance, the fifth generation is growing in global research 1 . As an essential technology in mobile communication systems, MIMO technology has attracted considerable attention in recent years because it can significantly increase the channel capacity without expanding the spectrum resources 2‐3 . However, due to the smallness of wireless devices, the space available for antennas is limited.…”

Section: Introductionmentioning

confidence: 99%

Isolation enhancement of 5G multiple‐input multiple‐output microstrip patch antenna using metamaterials and the theory of characteristic modes

Abdelaziz

Hamad

2020

Int J RF Microw Comput Aided Eng

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This paper presents a compact 5G multiple-input multiple-output (MIMO) microstrip antenna with isolation enhancement based on a slotted complementary split-ring resonator (SCSRR) and the theory of characteristic modes (TCMs). The metamaterial unit consists of three CSRR connected by extra slots. These added slots improve significantly the rejection response in terms of bandwidth and suppression. The dispersion diagram analysis is introduced to show the filtering characteristics of the band-gap structure before and after adding these additional slots. The TCM is employed to investigate the behavior of this 5G MIMO antenna before and after adding the slotted CSRR. The TCM is also applied to the MIMO antenna system to build up a precise methodology that can foresee whether the isolation can be upgraded further or not. The slotted CSRR is inserted meticulously in specific locations to block the coupling modes and almost does not affect the results of the noncoupling modes to improve the isolation remarkably. With this slotted CSRR, a 27-dB reduction in the mutual coupling between the two patch antennas is achieved. The whole design has been simulated utilizing the Microwave Studio CST ver. 18 simulator. The antenna being proposed is highly efficient and suitable for 5G wireless communication.

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“…One of merits of the fiber-optic link is its great dynamic range (e.g., >100 dB•Hz 2/3 ) as well as the broad bandwidth (e.g., a tens of GHz) [10]. It indicates that one does not necessarily need to include the digitization step for the DAS network where the transmission distance would be normally less than a few km.…”

Section: Introductionmentioning

confidence: 99%

Coverage Extension of Indoor 5G Network Using RoF-Based Distributed Antenna System

et al. 2020

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We propose and demonstrate a cascaded distributed antenna system (DAS) for efficiently extending the coverage of the mmWave-based 5G indoor network. For this, we exploit the radio-over-fiber (RoF) system based on the intermediate-frequency-over-fiber (IFoF) transmission technique that is enabled to add/drop the specific wavelength to the designated remote antenna unit (RAU) with using optical splitters and coarse wavelength division multiplexing (CWDM) filters. Moreover, the IFoF transceivers (TRx) perform the subcarrier multiplexing (SCM) in order to transmit 2×8 frequency allocation (FA) 5G signals per a single optical carrier, where each FA has 100 MHz bandwidth, leading each RAU to support 2×2 MIMO operation. Consequently, the cascaded structure allows for the adaptive and flexible configuration of the order of MIMO in accordance of the required data throughput at the specific indoor area. We introduce the cascaded IFoF link structure that can support up-to 13.5 dB optical power budget with following error-vector-magnitude (EVM) performance characterizations. And then we experimentally demonstrate the RoF-based cascaded DAS network, showing that more than 1 Gb/s total throughput can be achieved per a single antenna. Furthermore, we examine the use of avalanche photodiode (APD) to further increase the optical power budget (i.e., the coverage) based on experiment as well as simulation.

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4 × 4 MIMO architecture supporting IFoF-based analog indoor distributed antenna system for 5G mobile communications

Cited by 19 publications

References 13 publications

A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

Isolation enhancement of 5G multiple‐input multiple‐output microstrip patch antenna using metamaterials and the theory of characteristic modes

Coverage Extension of Indoor 5G Network Using RoF-Based Distributed Antenna System

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