1. Introduction

Purpose
In the modern homes, almost all if not all families have Wi-Fi connection in their house. However not everybody knows the factors that affect the signal strength of the Wi-Fi signals, and these factors will then affect the speed of the Wi-Fi. Therefore, our aim and purpose of our experiment is to find out the factors that affect the signal strength of the experiment.


Background Research
There are a lot of things that could possibly interfere with the Wi-Fi Connectivity. Some examples are physical interference and electromagnetic interference. However, for our research, we’ll be mainly be talking about physical interference.

There are a lot of hidden interferences within our own home, for example, as stated by  PcPro (2011), our building materials of our own house, like the walls, actually interfere with our Wi-Fi connection. PcPro also stated that large mirrors reflects the signal back, therefore also influencing the Wi-Fi connections. According to Georgia (2011), our hands are also one of the many physical interference that could affect the Wi-Fi connection. According to Bertolucci (2011) , even the water in our body plays a part in affecting the strength of our Wi-Fi signal.


Electromagnetic interference affects the Wi-Fi connection just as bad as physical interference does, for example, PcPro reported that if the router is within 25 feet of the microwave, data throughput of the router would be reduced up to 64%. Juniper.net (2013) stated that WRFI (wireless radio frequency interference), which was caused by multiple connections made with the same channel, thus causing the slowing of network connection, however, this could be solved by changing the channel of the router (some routers enable 5 GHz channel connection so that it would not be affected by this problem). Similarly, Bertolucci (2011) also stated in his article on PCWorld that household electronic devices such as microwaves and bluetooth devices that emit radio signals will affect the Wi-Fi signal strength.

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