2020/12/01 by Ahmed Iyanda Sulyman, Abdulmalik Alwarafy, Sulyman, Ahmed Iyanda +7 · 1 citation
Engineering · #Advanced MIMO Systems Optimization #FOS: Electrical engineering #Microwave Engineering and Waveguides #Millimeter-Wave Propagation and Modeling #Power Line Communications and Noise #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2012.00636
openalex publication_date 2020/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Fifth-generation (5G) cellular systems are likely to operate in the\ncentimeter-wave (3-30 GHz) and millimeter-wave (30-300 GHz) frequency bands,\nwhere a vast amount of underutilized bandwidth exists world-wide. To assist in\nthe research and development of these emerging wireless systems, a myriad of\nmeasurement studies have been conducted to characterize path loss in urban\nenvironments at these frequencies. The standard theoretical free space (FS) and\nStanford University Interim (SUI) empirical path loss models were recently\nmodified to fit path loss models obtained from measurements performed at 28 GHz\nand 38 GHz, using simple correction factors. In this paper, we provide similar\ncorrection factors for models at 60 GHz and 73 GHz. By imparting slope\ncorrection factors on the FS and SUI path loss models to closely match the\nclose-in (CI) free space reference distance path loss models, millimeter-wave\npath loss can be accurately estimated (with popular models) for 5G cellular\nplanning at 60 GHz and 73 GHz. Additionally, new millimeter-wave beam combining\npath loss models are provided at 28 GHz and 73 GHz by considering the\nsimultaneous combination of signals from multiple antenna pointing directions\nbetween the transmitter and receiver that result in the strongest received\npower. Such directional channel models are important for future adaptive array\nsystems at millimeter-wave frequencies.\n