Millimeter wave propagation measurements and characteristics for 5g system
In future 5G systems, the millimeter wave (mmWave) band will be used to support a large capacity for current mobile broadband. Therefore, the radio access technology (RAT) should be made available for 5G devices to help in distinct situations, for example device-to-device communications (D2D) and mu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020
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| Online Access: | http://eprints.utm.my/86485/1/AhmedMohammedAlSamman2020_MillimeterWavePropagationMeasurements.pdf |
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| author | Al-Samman, A. M. Azmi, M. H. Al-Gumaei, Y. A. Al-Hadhrami, T. Rahman, T. A. Fazea, Y. Al-Mqdashi, A. |
| author_facet | Al-Samman, A. M. Azmi, M. H. Al-Gumaei, Y. A. Al-Hadhrami, T. Rahman, T. A. Fazea, Y. Al-Mqdashi, A. |
| author_sort | Al-Samman, A. M. |
| collection | ePrints |
| description | In future 5G systems, the millimeter wave (mmWave) band will be used to support a large capacity for current mobile broadband. Therefore, the radio access technology (RAT) should be made available for 5G devices to help in distinct situations, for example device-to-device communications (D2D) and multi-hops. This paper presents ultra-wideband channel measurements for millimeter wave bands at 19, 28, and 38 GHz. We used an ultra-wideband channel sounder (1 GHz bandwidth)in an indoor to outdoor (I2O) environment for non-line-of-sight (NLOS) scenarios. In an NLOS environment, there is no direct path (line of sight), and all of the contributed paths are received from different physical objects by refection propagation phenomena. Hence, in this work, a directional horn antenna (high gain) was used at the transmitter, while an omnidirectional antenna was used at the receiver to collect the radio signals from all directions. The path loss and temporal dispersion were examined based on the acquired measurement data-the 5G propagation characteristics. Two different path loss models were used, namely close-in (CI) free space reference distance and alpha-beta-gamma (ABG) models. The time dispersion parameters were provided based on a mean excess delay, a root mean square (RMS) delay spread, and a maximumexcess delay. The path loss exponent for this NLOS specific environment was found to be low for all of the proposed frequencies, and the RMS delay spread values were less than 30 ns for all of the measured frequencies, and the average RMS delay spread values were 19.2, 19.3, and 20.3 ns for 19, 28, and 38 GHz frequencies, respectively. Moreover, the mean excess delay values were found also at 26.1, 25.8, and 27.3 ns for 19, 28, and 38 GHz frequencies, respectively. The propagation signal through the NLOS channel at 19, 28, and 38 GHz was strong with a low delay; it is concluded that these bands are reliable for 5G systems in short-range applications. |
| first_indexed | 2024-03-05T20:39:05Z |
| format | Article |
| id | utm.eprints-86485 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:39:05Z |
| publishDate | 2020 |
| publisher | MDPI AG |
| record_format | dspace |
| spelling | utm.eprints-864852020-09-30T08:41:03Z http://eprints.utm.my/86485/ Millimeter wave propagation measurements and characteristics for 5g system Al-Samman, A. M. Azmi, M. H. Al-Gumaei, Y. A. Al-Hadhrami, T. Rahman, T. A. Fazea, Y. Al-Mqdashi, A. TK Electrical engineering. Electronics Nuclear engineering In future 5G systems, the millimeter wave (mmWave) band will be used to support a large capacity for current mobile broadband. Therefore, the radio access technology (RAT) should be made available for 5G devices to help in distinct situations, for example device-to-device communications (D2D) and multi-hops. This paper presents ultra-wideband channel measurements for millimeter wave bands at 19, 28, and 38 GHz. We used an ultra-wideband channel sounder (1 GHz bandwidth)in an indoor to outdoor (I2O) environment for non-line-of-sight (NLOS) scenarios. In an NLOS environment, there is no direct path (line of sight), and all of the contributed paths are received from different physical objects by refection propagation phenomena. Hence, in this work, a directional horn antenna (high gain) was used at the transmitter, while an omnidirectional antenna was used at the receiver to collect the radio signals from all directions. The path loss and temporal dispersion were examined based on the acquired measurement data-the 5G propagation characteristics. Two different path loss models were used, namely close-in (CI) free space reference distance and alpha-beta-gamma (ABG) models. The time dispersion parameters were provided based on a mean excess delay, a root mean square (RMS) delay spread, and a maximumexcess delay. The path loss exponent for this NLOS specific environment was found to be low for all of the proposed frequencies, and the RMS delay spread values were less than 30 ns for all of the measured frequencies, and the average RMS delay spread values were 19.2, 19.3, and 20.3 ns for 19, 28, and 38 GHz frequencies, respectively. Moreover, the mean excess delay values were found also at 26.1, 25.8, and 27.3 ns for 19, 28, and 38 GHz frequencies, respectively. The propagation signal through the NLOS channel at 19, 28, and 38 GHz was strong with a low delay; it is concluded that these bands are reliable for 5G systems in short-range applications. MDPI AG 2020-01 Article PeerReviewed application/pdf en http://eprints.utm.my/86485/1/AhmedMohammedAlSamman2020_MillimeterWavePropagationMeasurements.pdf Al-Samman, A. M. and Azmi, M. H. and Al-Gumaei, Y. A. and Al-Hadhrami, T. and Rahman, T. A. and Fazea, Y. and Al-Mqdashi, A. (2020) Millimeter wave propagation measurements and characteristics for 5g system. Applied Sciences (Switzerland), 10 (1). ISSN 2076-3417 https://dx.doi.org/10.3390/app10010335 DOI:10.3390/app10010335 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Al-Samman, A. M. Azmi, M. H. Al-Gumaei, Y. A. Al-Hadhrami, T. Rahman, T. A. Fazea, Y. Al-Mqdashi, A. Millimeter wave propagation measurements and characteristics for 5g system |
| title | Millimeter wave propagation measurements and characteristics for 5g system |
| title_full | Millimeter wave propagation measurements and characteristics for 5g system |
| title_fullStr | Millimeter wave propagation measurements and characteristics for 5g system |
| title_full_unstemmed | Millimeter wave propagation measurements and characteristics for 5g system |
| title_short | Millimeter wave propagation measurements and characteristics for 5g system |
| title_sort | millimeter wave propagation measurements and characteristics for 5g system |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/86485/1/AhmedMohammedAlSamman2020_MillimeterWavePropagationMeasurements.pdf |
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