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Corresponding, good signal strength will makes WiFi energy consumption decreased.
Experiment results show that obstacle materials made of concrete reducing WiFi signal the most, followed by metal and wood.
We develop a new digital signal processing algorithm called Common Multiple Folding (CMF) that accurately amplifies periodic beacons in WiFi interference signals.
However, the multi-path fading of WiFi signals causes time-varying received signal strengths of WiFi signals, which leads to poor accuracy of WiFi localization.
Open accessJournal ArticleDOI
Jongtaek Oh, Jisu Kim 
01 Jun 2018-ICT Express
47 Citations
In this Letter, I propose an algorithm that adapts the K value for each position by analysing the correlation between the K value and the received WiFi signal strength.
Our study also points out to a greater need for interference management techniques in TVWS networks than WiFi networks due to increased RF coverage in TV bands.
For example, smartphones generally show worse WiFi performance than other WiFi devices (e. g., laptops and tablets) because smartphones suffer from additional signal loss due to hand-grips and the low antenna gains of their embedded antennas.
The embedded signal in TV contents should be successfully received in a typical TV-watching environment by (i) delivering information at least at 15 bps with significantly low volume to avoid human perception, (ii) despite the presence of ambient noise, e. g., a tick, a snap, or a knock.
The signal strength at a given location is a guide as to how high the TV antenna should be to avoid obstructing objects like tall trees, buildings, as well as hills.
Proceedings ArticleDOI
Sihui Han, Kang G. Shin 
01 May 2017
18 Citations
It enhances both WiFi signal and low-power IoT devices without changing their configurations or network protocols.

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