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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1978 1
2007 1
2009 2
2012 1
2014 2
2015 2
2016 5
2017 3
2018 7
2019 3
2020 6
2021 7
2022 11
2023 12
2024 5

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66 results

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Page 1
A dataset for Wi-Fi-based human activity recognition in line-of-sight and non-line-of-sight indoor environments.
Alsaify BA, Almazari MM, Alazrai R, Daoud MI. Alsaify BA, et al. Data Brief. 2020 Nov 18;33:106534. doi: 10.1016/j.dib.2020.106534. eCollection 2020 Dec. Data Brief. 2020. PMID: 33299909 Free PMC article.
The experiments performed in the first two environments are of a line-of-sight (LOS) nature, while the experiments performed in the third environment are of a non-line-of-sight (NLOS) nature. Each subject performed 20 trials for each of t …
The experiments performed in the first two environments are of a line-of-sight (LOS) nature, while the experiments perf …
Reflector-aided underwater optical channel modeling.
Yildiz S, Baǧlica İ, Kebapçi B, Elamassie M, Uysal M. Yildiz S, et al. Opt Lett. 2022 Oct 15;47(20):5321-5324. doi: 10.1364/OL.474028. Opt Lett. 2022. PMID: 36240352
Underwater visible light communication (UVLC) has been proposed as a high-speed alternative to acoustic signaling. While most UVLC systems are configured to work in line-of-sight (LOS) conditions, it is also possible to exploit reflected signals for performan …
Underwater visible light communication (UVLC) has been proposed as a high-speed alternative to acoustic signaling. While most UVLC systems a …
Synchronous time multiplexing for non-line-of-sight multiple-input multiple-output optical camera communications.
Chen S, Chi X. Chen S, et al. Opt Lett. 2024 May 15;49(10):2657-2660. doi: 10.1364/OL.522540. Opt Lett. 2024. PMID: 38748129
In typical multiple-input multiple-output (MIMO) optical camera communication (OCC) systems, the spatial correlation of MIMO channels is large. Optical signals between light sources can easily interfere with each other, negatively impacting the overall transmission …
In typical multiple-input multiple-output (MIMO) optical camera communication (OCC) systems, the spatial correlation of MIMO channels …
Non-line-of-sight underwater optical wireless communication network.
Arnon S, Kedar D. Arnon S, et al. J Opt Soc Am A Opt Image Sci Vis. 2009 Mar;26(3):530-9. doi: 10.1364/josaa.26.000530. J Opt Soc Am A Opt Image Sci Vis. 2009. PMID: 19252651
Addressing the special features of underwater wireless communication in sensor networks, we propose a novel non-line-of-sight network concept in which the link is implemented by means of back-reflection of the propagating optic signal at the ocean-air interfa …
Addressing the special features of underwater wireless communication in sensor networks, we propose a novel non-line-of-sig …
A Novel Adaptive Modulation Based on Nondata-Aided Error Vector Magnitude in Non-Line-Of-Sight Condition of Wireless Sensor Network.
Yang F, Zeng X, Mao H, Jian X, Tan X, Du D. Yang F, et al. Sensors (Basel). 2018 Jan 15;18(1):229. doi: 10.3390/s18010229. Sensors (Basel). 2018. PMID: 29342944 Free PMC article.
With the increase of reliability and diversity of information streams, the higher requirements on throughput and quality of service (QoS) have been put forward in data transmission between two sensor nodes. However, lower spectral efficiency becomes a bottleneck in non- …
With the increase of reliability and diversity of information streams, the higher requirements on throughput and quality of service (QoS) ha …
Wideband TDoA Positioning Exploiting RSS-Based Clustering.
Fuchs A, Wielandner L, Neunteufel D, Arthaber H, Witrisal K. Fuchs A, et al. Sensors (Basel). 2023 Jun 20;23(12):5772. doi: 10.3390/s23125772. Sensors (Basel). 2023. PMID: 37420936 Free PMC article.
The accuracy of radio-based positioning is heavily influenced by a dense multipath (DM) channel, leading to poor position accuracy. The DM affects both time of flight (ToF) measurements extracted from wideband (WB) signals-specifically, if the bandwidth is below 100 MHz-as …
The accuracy of radio-based positioning is heavily influenced by a dense multipath (DM) channel, leading to poor position accuracy. T …
Transmission characteristics of the rough surface scattering channel for wireless ultraviolet communication in a cemented ground scenario.
Li X, Lu T, Song P. Li X, et al. Appl Opt. 2023 Jun 10;62(17):4591-4599. doi: 10.1364/AO.482957. Appl Opt. 2023. PMID: 37707156
During non-line-of-sight ultraviolet (UV) communication, as the elevation angle of the transmitter decreases, more UV photons can be scattered by the ground and reach the receiver, and those photons are important components of the received signals. In this pa …
During non-line-of-sight ultraviolet (UV) communication, as the elevation angle of the transmitter decreases, more UV p …
Channel Characterization of Magnetic Human Body Communication.
Wen E, Sievenpiper D, Mercier P. Wen E, et al. IEEE Trans Biomed Eng. 2022 Feb;69(2):569-579. doi: 10.1109/TBME.2021.3101766. Epub 2022 Jan 21. IEEE Trans Biomed Eng. 2022. PMID: 34347590
RESULTS: The mHBC link for the ear-to-ear non-line-of-sight (NLOS) path measures up to -23.1 dB and -31.2 dB with large and small coils, respectively, which is 50 dB more efficient than the conventional Bluetooth channels utilizing antennas of similar …
RESULTS: The mHBC link for the ear-to-ear non-line-of-sight (NLOS) path measures up to -23.1 dB and -31.2 dB with large …
Long-range wireless optical power transfer system using an EDFA.
Javed N, Nguyen NL, Ali Naqvi SF, Ha J. Javed N, et al. Opt Express. 2022 Sep 12;30(19):33767-33779. doi: 10.1364/OE.468766. Opt Express. 2022. PMID: 36242404 Free article.
An improved safety mechanism is proposed to terminate the resonance when an obstacle blocks the transmitter-receiver line of sight. The measured incident power of 1 W decreases to 0.79 mW after the WDM filter is deployed which is well within defined maximum p …
An improved safety mechanism is proposed to terminate the resonance when an obstacle blocks the transmitter-receiver line of …
Security and eavesdropping in terahertz wireless links.
Ma J, Shrestha R, Adelberg J, Yeh CY, Hossain Z, Knightly E, Jornet JM, Mittleman DM. Ma J, et al. Nature. 2018 Nov;563(7729):89-93. doi: 10.1038/s41586-018-0609-x. Epub 2018 Oct 15. Nature. 2018. PMID: 30323288
Here we demonstrate that, contrary to this expectation, an eavesdropper can intercept signals in line-of-sight transmissions, even when they are transmitted at high frequencies with narrow beams. The eavesdropper's techniques are different from those f …
Here we demonstrate that, contrary to this expectation, an eavesdropper can intercept signals in line-of-sight trans …
66 results