Characterization of WLAN System for 60 GHz Residential Indoor Environment Based on Statistical Channel Modeling

Abstract

This article investigates on developing a methodology for statistical channel modeling for 60 GHz Wireless Local Area Network (WLAN) system. The most significant characteristics of indoor 60 GHz propagation channels such as large scale propagation path loss, quasi-optical propagation nature, reflection, diffraction, shadowing effect, clustering nature of the channel, effective impact of polarization and necessity of steerable directional antennas are taken into account. This research work has focused on modeling of the 60 GHz WLAN system to estimate the RMS delay spread (RDS) considering both directional and non-directional antennas for residential indoor environment. RDS is a measure of communication channel delay and estimates fading characteristics. Multipath effects and channel deep-fade can be alleviated by minimizing the channel RDS. This research work analyses the RDS characteristics of a living room environment considering two different indoor channel model approaches. Here, the IEEE 802.11ad living room channel model and the Saleh-Valenzuela (S-V) model are considered while developing channel impulse response as well as RDS. The investigations show that highly directional steerable antennas can effectively reduce the channel delay spread. A comparative study between the IEEE 802.11ad and the S-V models has also been performed in the later section.

A Study on Propagation Models for 60 GHz Signals in Indoor Environments

“…Since the angle of diffraction and size of wavelength are directly proportional, propagation due to diffraction is not viable at the 60 GHz frequency range. Consequently, most of the transmission power is propagated between the transmitter and receiver through LOS and low-order reflected paths (Maltsev et al, 2010b;Sharmin and Boby, 2020).…”

“…This approach is being considered for 5G systems employing the 60 GHz band (Ekti et al, 2016). In addition, the 60 GHz band allows for the reduction of the radios and antennas because of the small wavelength at this frequency (Sharmin and Boby, 2020).…”

“…Singh et al described studies performed in outdoor scenarios aiming to investigate the main propagation mechanisms in the 60 GHz band (Singh et al, 2018). In addition, Sharmin and Boby investigated a methodology for statistical channel modeling for 60 GHz WLAN system in a residential indoor environment and presented a comparative study between the IEEE 802.11ad and Saleh-Valenzuela models (Sharmin and Boby, 2020). Indoor scenarios have also been investigated in (Shabbir et al, 2021), in which the models ABG and CI with a frequency-weighted (CIF) path loss exponent (PLE) are compared for a wide range of frequency bands, including 60 GHz.…”

Behind the Door: Practical Parameterization of Propagation Parameters for IEEE 802.11ad Use Cases

“…However, the efficacy of using millimeter waves (mm-waves) for high-speed data transmission remains a subject of intense debate in current research [3], mainly due to the significant overhead associated with the implementation of beamforming and other complementary techniques. This challenge is further compounded by the emergence of shadowing effects induced by non-static and non-stationary scatterers, such as individuals in motion proximate to the antennas deployed at the base access point (AP) or to the user terminal (STA) [4].…”

Impact of Wall Coating on the Behavior of Indoor OWC under Diffuse Topology

“…The reflectance of such wall covers depends on the material, color and roughness of the coating surface. This reflectance is a function of the wavelength of the radiation that is incident on the walls [13][14][15][16]. As a consequence of this wavelength dependence, a dispersion and/or distortion of the received signal may be occurred especially when multipath phenomenon is encountered during indoor communications.…”