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

Applied Sciences

Marco A. Panduro¹  David H. Covarrubias¹  Elizvan Juárez¹  Brian J. Sánchez¹  Leonardo F. Yepes² 

[1] Department of Electronics and Telecommunications, CICESE Research Center, Ensenada 22860, Mexico;Faculty of Basic Sciences and Engineering, Catholic University of Pereira, Risaralda 660005, Colombia;

关键词: narrow beamwidth;    Doppler power spectrum;    coherence time;    phased antenna array;    5G wireless communication;    radio wave propagation;   

DOI  :  10.3390/app112110081

来源: DOAJ

【 摘 要 】

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

【 授权许可】

Unknown