Universiti Teknologi Malaysia Institutional Repository

Comparative study of indoor propagation model below and above 6 ghz for 5g wireless networks

Al-Samman, Ahmed Mohammed and Abd. Rahman, Tharek and Al-Hadhrami, Tawfik and Daho, Abdusalama and Hindia, M. H. D. Nour and Azmi, Marwan Hadri and Dimyati, Kaharudin and Alazab, Mamoun (2019) Comparative study of indoor propagation model below and above 6 ghz for 5g wireless networks. Electronics (Switzerland), 8 (1). ISSN 2079-9292


Official URL: http://dx.doi.org/10.3390/electronics8010044


It has been widely speculated that the performance of the next generation based wireless network should meet a transmission speed on the order of 1000 times more than the current cellular communication systems. The frequency bands above 6 GHz have received significant attention lately as a prospective band for next generation 5G systems. The propagation characteristics for 5G networks need to be fully understood for the 5G system design. This paper presents the channel propagation characteristics for a 5G system in line of sight (LOS) and non-LOS (NLOS) scenarios. The diffraction loss (DL) and frequency drop (FD) are investigated based on collected measurement data. Indoor measurement results obtained using a high-resolution channel sounder equipped with directional horn antennas at 3.5 GHz and 28 GHz as a comparative study of the two bands below and above 6 GHz. The parameters for path loss using different path loss models of single and multi-frequencies have been estimated. The excess delay, root mean square (RMS) delay spread and the power delay profile of received paths are analyzed. The results of the path loss models show that the path loss exponent (PLE) in this indoor environment is less than the free space path loss exponent for LOS scenario at both frequencies. Moreover, the PLE is not frequency dependent. The 3GPP path loss models for single and multi-frequency in LOS scenarios have good performance in terms of PLE that is as reliable as the physically-based models. Based on the proposed models, the diffraction loss at 28 GHz is approximately twice the diffraction loss at 3.5 GHz. The findings of the power delay profile and RMS delay spread indicate that these parameters are comparable for frequency bands below and above 6 GHz.

Item Type:Article
Uncontrolled Keywords:delay spread, IoT, path loss, smart city
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:88595
Deposited By: Yanti Mohd Shah
Deposited On:15 Dec 2020 18:31
Last Modified:15 Dec 2020 18:31

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