Figure 7. Jitter Variation in Materials
CONCLUSION
In conclusion, the results obtained from the surveyed data with the aid of RF signal Tracker and Open NetTest software using Infinix X608 mobile phone showed that, the construction materials have significant impact on 2G signal in terms of Received Signal Strength and Quality of Service. The result of the penetration loss, indoor and outdoor signal strength are compared in table XIII and table XIV, this revealed that, all the 5 selected materials namely; Material A,B,C,D and E have significant effects on signals .
The result from the penetration loss confirms that Material C has the highest penetration loss of 19.8dBm while Material E has the lowest penetration loss of 2.9dBm. This attests to the facts from the reviewed works that the type of construction materials affect 2G signal.
Material C has 46.1%\(\times 10^{-2}\) increase in indoor signal strength, material E has insignificant change in indoor signal strength, material D, B and A has 1.0%\(\times 10^{-2}\) decrease, 10.2%\(\times 10^{-2}\) increase and 16.4%\(\times 10^{-2}\)increase respectively in indoor received signal strength.
The result from QOS parameter (Jitter) are compared for both outdoor and indoor, this conclusively showed that Material B, C and E will provide improved experience to the user, as a result of their spread.
It is opined that, calculating the material penetration loss account for attenuation of signal strength. Therefore, Penetration Loss is a function of the material composition.
In addition, it is observed that, while taking the readings during the day, penetration loss tends to increase, since it is the rush or busy hour, human and other materials has some level of absorption, hence they may cause destructive interference.