Results 211 to 220 of about 217,962 (248)

Indoor localization using received signal strength

2013 8th IEEE Design and Test Symposium, 2013
A comparison between two indoor localization algorithms using received signal strength is carried out. The first algorithm is the vector algorithm; the second is the matrix algorithm. The comparison considered the effects of the reference points, the access point, and the frequency on the accuracy of the localization process.
Huthaifa A. Obeidat, R. A. Abd-Alhameed, Jim M. Noras, S. Zhu, T. Ghazaany, Nazar T. Ali, E. Almahdi Elkhazmi   +6 more
openaire   +1 more source

Received signal strength indication for movement detection

2015 Eighth International Conference on Mobile Computing and Ubiquitous Networking (ICMU), 2015
Wireless networks are spreading continuously, filling our homes and the world around us. By using a ZigBee network we will show that a person can be detected by analyzing the fluctuations of signal strength inside the network. The simplicity of our approach means that it could be extended to all wireless networks.
Omar Alfandi, Arne Bochem, Kirill Bulert, Dieter Hogrefe, Alwin Maier   +4 more
openaire   +1 more source

On the Use of Uplink Received Signal Strength Measurements for Handover

VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008
In most cellular systems, handover decisions are based on measurements of the downlink signal strength. When the average path gain in downlink and uplink is similar, such principles yield good performance in both directions of transmission. In cases with systematic imbalances between downlink and uplink however, it is not evident that the uplink ...
Konstantinos D. Dimou, Anders Furuskar
openaire   +1 more source

A received signal strength indication-based localization system

21st Mediterranean Conference on Control and Automation, 2013
Localization using the received signal strength indication (RSSI) of wireless local area networks with a priori knowledge of the coordinates of the routers/access points is addressed in this paper. The proposed algorithm employs a path loss model that allows for the inclusion of the logarithmic measurements of the signal strength directly in the state ...
Pedro Lourenço, Pedro Tiago Martins Batista, Paulo Oliveira 0001, Carlos Silvestre, C. L. Philip Chen   +4 more
openaire   +1 more source

Characterization of Distance Error with Received Signal Strength Ranging

2010 IEEE Wireless Communication and Networking Conference, 2010
Location aware applications benefit from accurate position information. The position uncertainty can be reduced through cooperative localization in distributed systems with accurate point-to-point ranging. Received signal strength (RSS) measurement enables low cost, low complexity distance estimation.
Jared Dulmage, Robert Cioffi, Michael P. Fitz, Danijela Cabric   +3 more
openaire   +1 more source

Impact of orientation and wire placement on received signal strengths

2016 IEEE 21st International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD), 2016
Many radio transceivers provide an instantaneous measure of radio-frequency (RF) energy through their received signal strength indicator (RSSI) output. Applications of this measurement include media access control (MAC), e.g., implemented as listen-before-talk (LBT), and location estimation.
Nicholas M. Boers, Derek Mak
openaire   +1 more source

Direction of Arrival Estimation With the Received Signal Strength Gradient

IEEE Transactions on Vehicular Technology, 2018
Direction of arrival (DoA) estimation has wide-ranging applications and is particularly challenging in complex propagation environments. Conventional approaches estimate the DoA based on the phase of the impinging signal on a sensor array. This approach has several challenges: for example, it requires tight synchronization among array elements and the ...
Gunjan Verma, Fikadu T. Dagefu, Brian M. Sadler, Jeffrey N. Twigg   +3 more
openaire   +1 more source

Received signal strength calibration for handset localization in WLAN

2012 IEEE International Conference on Communications (ICC), 2012
Terminal localization for indoor Wireless Local Area Networks (WLANs) is critical for the deployment of location based services inside of buildings. A key challenge in localization arises when more than one mobile device is used for collecting received signal strength (RSS) measurements due to the existence of inconsistencies in the signal measurement ...
Diego Felix, Michael McGuire
openaire   +1 more source

Analysis and Design of CMOS Received Signal Strength Indicator

IEEE Transactions on Circuits and Systems I: Regular Papers, 2014
This paper presents a CMOS received signal strength indicator (RSSI) based on the successive detection architecture. Theoretical analyses of the RSSI value, error, and dynamic range are developed. The RSSI value relates to the single-stage voltage gain and the saturated output voltage level of each limiting ampifier cell. The RSSI error depends only on
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The Effect of Regeneration on the Received Signal Strength

Proceedings of the IRE, 1928
It is the purpose of this paper to give a theory of the effect of regeneration using the solution of a non-linear differential equation, and to present experimental verification of the theory. It is shown that: (a) as a first approximation, detection has no effect on the radio-frequency grid voltage developed under the influence of an incoming signal, (
openaire   +1 more source