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181“…The results also provide insight into the delays caused by buffering in the protocol stack and especially in the WiFi interface.…”
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182“…The main topic faced by the paper is concentrated on case study-based ZigBee as well as WiFi networks implementation in the area of the acquisition of data from sensors and measuring transducers connected to the terminal network. …”
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183“…However, continuous GPS positioning consumes much energy, which may drain the battery of mobile devices quickly. Although WiFi and cell tower positioning are alternatives, they provide lower accuracy compared to GPS. …”
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184“…The system is remotely controllable over WiFi and easily automated using the MQTT communication protocol. …”
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185“…For this reason, indoor positioning based on WiFi has attracted great attention. Compared with the received signal strength indicator (RSSI), channel state information (CSI) captures the radio propagation environment more accurately. …”
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186“…WiFi localization based on channel state information (CSI) fingerprints has become the mainstream method for indoor positioning due to the widespread deployment of WiFi networks, in which fingerprint database building is critical. …”
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187“…The widespread availability of WiFi received signal strength indicator (RSSI) makes it a suitable candidate for indoor localization. …”
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188“…The past few years in computing have seen the emergence of smart mobile devices, sporting multi-core embedded processors, powerful graphical processing units, and pervasive high-speed wireless network connections (supported by WIFI or EDGE/UMTS). The relatively limited capacity of these devices,…”
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189“…Parental questionnaires provided data on whether they had WiFi at home and cordless phone ownership and model. …”
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190por Nazari, Iraj, Mousavi, Seyyed Masoud, Sadeghpour, Ahmad, Alamshah, Seyyed Mansour, Dastoorpoor, Maryam“…Mean decrease in Rutherford class in DCB and PB were 2.56, 2.28 (P>0.05). Mean decrease in WIFI class in DCB and PB were 1.48, 1.11 (P>0.05). …”
Publicado 2020
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191“…The hardware consists of a Raspberry PI Model B 3 with a WiFi connection and an OmniVision OV5647 sensor with a mounted wide-angle lens, a circular polarizing (CPL) filter and a natural density (ND) filter. …”
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192“…Indoor localization based on WiFi has attracted a lot of research effort because of the widespread application of WiFi. …”
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193“…Most commonly, a particle filter is used to fuse information from dead reckoning and WiFi or Bluetooth adapters to provide an accurate location of the person holding a smartphone. …”
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194por Horn, Berthold K. P.“…The IEEE 802.11mc WiFi standard provides a protocol for a cellphone to measure its distance from WiFi access points (APs). …”
Publicado 2020
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195“…This paper presents an innovative solution for monitoring the status of temperature and other atmospheric conditions. A UbiBot WS1 WIFI wireless temperature logger was used, with an external DS18B20 temperature sensor integrated into an S49 (49E1)-type rail as T(szyn) WS1 WIFI. …”
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196“…With the massive deployment of WiFi access points and low-cost cameras, it is possible to combine the above three methods to achieve more accurate, complete, and reliable location results. …”
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197“…In this paper, we present printed sensor antennas for the [862–928] MHz band supporting LoRa and Sigfox and the [2.4–2.5] GHz band for WiFi, Bluetooth, and IEEE802.15.4 communication. …”
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198por Sylla, Tidiane, Mendiboure, Leo, Maaloul, Sassi, Aniss, Hasnaa, Chalouf, Mohamed Aymen, Delbruel, Stéphane“…To manage a growing number of users and an ever-increasing demand for bandwidth, future 5th Generation (5G) cellular networks will combine different radio access technologies (cellular, satellite, and WiFi, among others) and different types of equipment (pico-cells, femto-cells, small-cells, macro-cells, etc.). …”
Publicado 2022
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199“…We capture the WiFi signals of detected drinking using wireless devices; then, we calculate channel state information (CSI), perform noise removal and feature extraction, and apply ANN for drinking category detection. …”
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200por Landman, Adam, Emani, Srinivas, Carlile, Narath, Rosenthal, David I, Semakov, Simon, Pallin, Daniel J, Poon, Eric G“…Some users experienced difficulty with WiFi connectivity which was addressed by enhancing CliniCam to check for connectivity on launch. …”
Publicado 2015
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