A Link-Selection Mechanism for Hybrid FSO-mmWave Systems based on Index Modulation

Tokgoz, Sezer C.; Althunibat, Saud; Qaraqe, Khalid

doi:10.1109/icc40277.2020.9148634

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…Combination of free-space optical and mmWave systems provide significantly high data rates in wireless transmissions in spite of rapid variations in channel and environmental conditions. The selection of active link is determined by index modulation that does not need CSI or any feedback at Tx and it provides higher spectral efficiency [12]. The combination of optical and digital system architectures at THz bands provide data rates of Terabits/s, nearly zero latency and bandwidths greater than 50 GHz.…”

Section: Applications Of Mmwave and Thz Frequency Bandsmentioning

confidence: 99%

Design and Feasibility Verification of 6G Wireless Communication Systems with State of the Art Technologies

Dilli

2021

Int J Wireless Inf Networks

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Frequencies above 100 GHz are the promising frequency bands for 6G wireless communication systems because of the abundant unexplored and unused spectrum. The increasing global demand for ultra-high spectral efficiencies, data rates, speeds and bandwidths in next-generation wireless networks motivates the exploration of peak capabilities of massive MIMO (Multi–Input–Multi–Output) wireless access technology at THz bands (0.1–10 THz). The smaller wavelengths (order of microns) of these frequencies give an advantage of making high gain antennas with smaller physical dimensions and allows massive spatial multiplexing. This paper presents the design of ultra-massive MIMO (ultra-mMIMO) hybrid beamforming system for multi users and its feasibility to function at THz frequency bands. The functionality of the proposed system is verified at higher order modulation schemes to achieve higher spectral efficiencies using performance metrics that includes error vector magnitude, symbol constellations, and antenna array radiation beams. The performance results suggest to use a particular mMIMO antenna configuration based on number of independent data streams per user and strongly recommended to use higher number of data streams per user in order to achieve higher throughputs that satisfy the needs of 6G wireless systems. Also the performance of the proposed system at 0.14 THz is compared with mmWave systems that operate at 28 GHz and 73 GHz bands to justify the feasibility of the proposed work.

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Section: Applications Of Mmwave and Thz Frequency Bandsmentioning

confidence: 99%

Design and Feasibility Verification of 6G Wireless Communication Systems with State of the Art Technologies

Dilli

2021

Int J Wireless Inf Networks

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“…The complementary behaviors of both transmission technology against different conditions pave the way for parallel employment of mmWave and FSO links to satisfy quality of service requirements of 5G and beyond networks [7]. Furthermore, wireless data rates supported by each transmission are compatible to each other, which enable the parallel employment of both links to increase spectral efficiency or transmit diversity [8]- [10]. By other means, multi-hop relaying schemes are widely used as energy efficient techniques to increase the system reliability, coverage area, and capacity [11].…”

Section: Introductionmentioning

confidence: 99%

Outage Analysis of Relay-Based Dual-Hop Hybrid FSO-mmWave Systems

Tokgoz¹,

Althunibat

Miller

et al. 2022

IEEE Access

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Bearing in mind the high data rate and volume requirements of 5G and beyond networks, millimeter wave (mmWave) systems can be utilized with the assistance of free-space optical (FSO) systems since both technologies exhibit distinctive behaviors under different weather conditions. Therefore, in this study, we investigate a relay-based dual-hop hybrid FSO-mmWave systems from an outage performance point of view, where the communication in each hop is established on both FSO and mmWave links simultaneously. Specifically, Nakagami-m distribution is used for mmWave fading channels, while gammagamma distribution is assumed for FSO turbulence channels. Two well-known amplify-and-forward (AF) relaying schemes are examined during data transmission, in which the power amplification operation is based on partial and full channel state information of the system, namely, fixed-gain and variable-gain AF relaying methods. The effects of fundamental system variables on the outage analysis of the relay-based hybrid transmissions are investigated by obtaining exact closed-form derivations of the outage probability and effective throughput. Based upon the results, it is shown that the proposed closed-form expressions are in good match with the Monte-Carlo simulations.

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On the secrecy capacity of hybrid FSO-mmWave links with correlated wiretap channels

Tokgoz

Althunibat

Miller

et al. 2021

Optics Communications

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A Link-Selection Mechanism for Hybrid FSO-mmWave Systems based on Index Modulation

Cited by 7 publications

References 21 publications

Design and Feasibility Verification of 6G Wireless Communication Systems with State of the Art Technologies

Design and Feasibility Verification of 6G Wireless Communication Systems with State of the Art Technologies

Outage Analysis of Relay-Based Dual-Hop Hybrid FSO-mmWave Systems

On the secrecy capacity of hybrid FSO-mmWave links with correlated wiretap channels

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