This paper presents the measurement and prediction of received signal level and path loss through vegetation. Results were estimated under free space, single tree, and vegetation conditions which revealed that the presence of isolated trees along a radio path can affect signal pr...
Open access
Research Article10.9734/ajr2p/2021/v4i430148
This study investigates the impact of different rain classifications and elevation angles on copolar attenuation, a critical factor influencing radio wave propagation in communication systems operating in adverse weather conditions. Using data collected over the years 2021 and 20...
Open access
Research Article10.9734/ajr2p/2024/v8i2161
This study was aimed at analyzing the effect of temperature and relative humidity on downlink satellite communication systems over Warri, in Delta State, Nigeria. The data used in this study were temperature, relative humidity and radio signal strength (RSS) obtained from the Nig...
Open access
Research Article10.9734/ajr2p/2021/v5i430170
This paper presents the design and construction of a smart-home automation system using nodeMCU and Google assistant. The device consist of Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) module that contains all clock generators, shift registers and dat...
Open access
Research Article10.9734/ajr2p/2021/v5i430168
This paper presents the modeling of the rain rate and rain attenuation for the design of line-of-sight link budget. Rain rate data were collected from the Nigeria Meteorological Agency (NIMET) for Warri, Delta State (5.5540N 5.7930E). The rain rate data were collect for the perio...
This paper presents measurement and evaluation of radiation power density emitted from mobile cellular base stations in Abuja and it’s environ. Forty (40) mobile base stations with ten (10) each from AIRTEL, ETISALAT, GLO and MTN located in areas with high population were randoml...
Open access
Research Article10.9734/ajr2p/2021/v4i130132
This paper presents the evaluation of propagation losses due to rain attenuated signal on terrestrial radio link. Rain rate data were measured using Davis weather station for the months of July, August and October 2017 at (9.9565° N, 8.8583° E; 1258 meters) Jos Plateau state of...
Open access
Research Article10.9734/psij/2019/v23i130140
The 12 to 18 GHz frequency bands are commonly deployed for mobile network metropolitan microwave radio links using small antennas and low transmit power to deliver high channel capacities. Jos Plateau region with the blend of tropical and temperate climate is characterized with h...
Open access
Research Article10.9734/psij/2020/v24i130170