A Comparative Study of Dual-Slope Path Loss Model in Various Indoor Environments at 14 to 22 GHz

Oyie, Nicholas O.; Afullo, Thomas J.

doi:10.23919/piers.2018.8597901

Cited by 10 publications

(10 citation statements)

References 13 publications

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“…6 represents the floor plan of the indoor corridor environment adopted. More information about these measurement campaigns can be found in [1], [19], [20].…”

Section: B Measurements Scenario and Experimental Proceduresmentioning

confidence: 99%

“…The mmWave frequency regime has massively available blocks of contiguous raw bandwidth that is capable of supporting more data traffic for various multimedia services [1]- [20]. Nevertheless, the 5 system will still have access to the licensed spectrum in the higher centimeter wave (cmWave) bands.…”

Section: Introductionmentioning

confidence: 99%

“…The 5 mmWave frequency bands have the opportunity to support such throughput data rates for low latency content, high-definition (HD) video, virtual interaction between people and machines, and other applications that require extremely high data rate transfer [1], [20], [23].…”

Section: Introductionmentioning

confidence: 99%

“…The study examined two essential aspects of a corridor typical model propagation phenomenon, which are waveguiding effects in a corridor and breakpoint. Accurate path loss models are essential for indoor corridor environments in the candidate mmWave regime for applications in future generation communication systems [20]. The 5 networks will rely on the LOS probability in terms of the coverage capability in indoor corridor environments [19].…”

Section: Introductionmentioning

confidence: 99%

“…A performance study of multi-frequency path loss prediction models at 14 to 22 bands based on the DS and ABG was performed [20]. The models take into consideration the modal attenuation of signal strength as it is guided along the indoor corridors.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Performance study of path loss models at 14, 18, and 22 GHz in an indoor corridor environment for wireless communications

2021

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“…6 represents the floor plan of the indoor corridor environment adopted. More information about these measurement campaigns can be found in [1], [19], [20].…”

Section: B Measurements Scenario and Experimental Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance study of path loss models at 14, 18, and 22 GHz in an indoor corridor environment for wireless communications

2021

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An Efficient Approach of Improving Path Loss Models for Future Mobile Networks in Enclosed Indoor Environments

Elmezughi

Afullo

2021

IEEE Access

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Path loss is the primary aspect that determines the overall coverage of networks. Designing reliable wireless communication systems requires accurate path loss prediction models. Future wireless mobile systems will rely mainly on the super-high frequency (SHF) and the millimeter-wave (mmWave) frequency bands due to the massive available bandwidths that will meet projected users' demand, such as the needs of the fifth-generation (5G) wireless systems and other high-speed multimedia services. However, these bands are more sensitive and exhibit a different propagation behavior compared to the frequency bands below 6 GHz. Hence, improving the existing models and developing new models are vital for characterizing the wireless communication channel in both indoor and outdoor environments for future SHF and mmWave services. This paper proposes an efficient improvement of the well-known close-in (CI) free space reference distance model and the floating-intercept (FI) model. Real measured data was taken for both line-of-sight (LOS) and non-line-of-sight (NLOS) communication scenarios in a typical indoor corridor environment at three selected frequencies within the SHF band, namely 14 GHz, 18 GHz, and 22 GHz. The research finding of this work reveals that the proposed models have better performance in terms of their accuracy of fitting real measured data collected from measurement campaigns. In addition, this work studies the impact of the angle of arrival and the antenna heights on the current and improved CI and FI models. The results show that the improved models provide better stability and sensitivity to the change of these parameters. Furthermore, the mean square error between the models and their improved versions were presented. Finally, this paper shows that shadow fading's standard deviation can have a notable reduction in both the LOS and NLOS scenarios (especially in the NLOS), which means higher precision in predicting the path loss.INDEX TERMS Path loss, propagation measurements, 5G, angle of arrival, antenna height.

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Service Quality of the Urban Microcellular Scenario in the Sub-6 GHz Frequency Bands

Paulo,

Teixeira,

Velez

2024

IEEE Access

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This paper compares the service quality between 4G and 5G New Radio (NR) among different sub-6 GHz frequency bands in an urban micro-cellular outdoor setting. An updated version of LTE-Sim is considered to obtain the exponential effective signal-to-interference-plus-noise ratio in 4G while determining the modulation and coding scheme. System capacity is obtained by considering a video application at 3.1 Mb/s and the proportional fair (PF) scheduler while comparing 4G and 5G NR through system-level simulations (the 5G-air-simulator is considered for 5G NR). The modified largest weighted delay first (M-LWDF) scheduler is compared with the PF, though only in 4G. Optimal system performance is reached both in 4G and 5G NR for cell radii longer than two times the breakpoint distance (or beyond), which are preferable compared to the shortest values for the cell radius. We have learned that the packet loss ratio (PLR) is higher for the cell radii, R, shorter than breakpoint distance, d ′ BP . For d ′ BP ≤ R ≤ 1000 m, the PLR first decreases and then increases. For a target PLR < 2%, in 4G, the highest maximum average goodput is obtained with the M-LWDF scheduler (10-25% increase). This maximum occurs at the 2.6 GHz and 3.5 GHz frequency bands for 300 ≤ R ≤ 500 m, while at 5.62 GHz the highest goodput occurs for the longest Rs. With 5G NR and the PF, the maximum average goodput increases, in our simulations, from ≈ 14.1 (in 4G) to 26.1 Mb/s (20 MHz bandwidth).

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A Comparative Study of Dual-Slope Path Loss Model in Various Indoor Environments at 14 to 22 GHz

Cited by 10 publications

References 13 publications

Performance study of path loss models at 14, 18, and 22 GHz in an indoor corridor environment for wireless communications

Performance study of path loss models at 14, 18, and 22 GHz in an indoor corridor environment for wireless communications

An Efficient Approach of Improving Path Loss Models for Future Mobile Networks in Enclosed Indoor Environments

Service Quality of the Urban Microcellular Scenario in the Sub-6 GHz Frequency Bands

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