Samad Md Abdus, Choi Dong-You, Choi Kwonhue
Department of Information and Communication Engineering, Yeungnam University, Gyeongsan-si 38541, Korea.
Department of Electronics and Telecommunication Engineering, International Islamic University Chittagong, Chittagong 4318, Bangladesh.
Sensors (Basel). 2022 Aug 31;22(17):6593. doi: 10.3390/s22176593.
The millimeter-wave (mmWave) frequency is considered a viable radio wave band for fifth-generation (5G) mobile networks, owing to its ability to access a vast spectrum of resources. However, mmWave suffers from undesirable characteristics such as increased attenuation during transmission. Therefore, a well-fitted path loss model to a specific environment can help manage optimal power delivery in the receiver and optimal transmitter power in the transmitter in the mmWave band. This study investigates large-scale path loss models in a university hall environment with a real-measured path loss dataset using directional horn antennas in co-polarization (H-H) and tracking antenna systems (TAS) in line-of-sight (LOS) circumstances between the transmitter and receptor at mmWave and centimeter-level bands. Although the centimeter-level band is used in certain industrialized nations, path loss characteristics in a university hall environment have not been well-examined. Consequently, this study aims to bridge this research gap. The results of this study indicate that, in general, the large-scale floating-intercept (FI) model gives a satisfactory performance in fitting the path loss both in the center and wall side links.
毫米波（mmWave）频段因其能够接入大量频谱资源而被视为适用于第五代（5G）移动网络的可行无线电频段。然而，毫米波存在诸如传输过程中衰减增加等不良特性。因此，一个适用于特定环境的路径损耗模型有助于管理毫米波频段中接收机的最佳功率传输以及发射机的最佳发射功率。本研究使用定向喇叭天线在共极化（H-H）模式下以及跟踪天线系统（TAS），在毫米波和厘米级频段的发射机与接收机之间的视距（LOS）情况下，利用实测路径损耗数据集，对大学礼堂环境中的大规模路径损耗模型进行了研究。尽管某些工业化国家使用厘米级频段，但大学礼堂环境中的路径损耗特性尚未得到充分研究。因此，本研究旨在填补这一研究空白。本研究结果表明，总体而言，大规模浮动截距（FI）模型在拟合中心链路和墙壁侧链路的路径损耗方面表现令人满意。
