Effects of Narrow Beam Phased Antenna Arrays over the Radio Channel Metrics, Doppler Power Spectrum, and Coherence Time, in a Context of 5G Frequency Bands

With the arrival of 5G wireless communication systems, there has been increased interest in exploring higher frequency bands above 6 GHz, up to millimeter-wave frequencies. Radio wave propagation at these frequencies can suffer from substantial Doppler impairments. The linear dependency shifts with carrier make them challenging use high-mobility cellular scenarios. Therefore, power spectrum (DPS) characteristics and radio channel coherence time (CT) received signals are great importance for systems. In this way, paper presents effects a narrow beam phased antenna array reducing DPS (due user movement) and, simultaneously, increasing (CT). Functional complete descriptive assessments beamwidths versus CT, through different elements geometries array, analyzed. Moreover, terms CT DPS, better performance on scenarios was obtained.