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Line-of-sight control of the CSI evolutionary model: μ control
1992 Edition, June 1, 1992 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The design, analysis, and simulation of a control law that guarantees a fine pointing performance under external disturbances and model uncertainties is investigated. This paper examines the achievable performance and modeling errors for the...

Transmit diversity implementation through phase conjugation in line of Sight and Non Line of Sight scenerios
2015 Edition, November 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In this work, we have demonstrated transmit diversity using phase conjugating scheme. A six bit digital phase shifter and three voltage controlled phase shifters were developed to implement the pre-coded phase conjugate in the transmit signal. Deliberate constructive...

Non-line-of-sight cloud-scatter communication
2009 Edition, May 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We report novel low bit rate non-line-of-sight optical free space communication over 200 km employing forward scattering from clouds with 134 dB link loss and mid-path scatter gain of 10 dBi.

Massive MIMO in Line-of-Sight Propagation
2017 Edition, June 1, 2017 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

By calculating the effective max-min SINR (signal- to-interference-plus-noise ratio) and the corresponding power controls explicitly, and selectively dropping a small number of mobiles based on a simple and effective algorithm, we demonstrate that for both downlink and...

Line-of-sight paths over random terrain
1975 Edition, Volume 54, April 1, 1975 - AT&T Corp.

Line-of-sight paths are important as VHF radio channels. In a mobile radio system, for example, the landscape determines the communication possibilities in a complicated way. This paper analyzes a simple model of rough terrain to relate statistical...

WiFi-Based Indoor Line-of-Sight Identification
2015 Edition, Volume 14, November 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Wireless LANs, particularly WiFi, have been pervasively deployed and have fostered myriad wireless communication services and ubiquitous computing applications. A primary concern in designing these applications is to combat harsh indoor propagation environments, particularly...

LiFi: Line-Of-Sight identification with WiFi
2014 Edition, April 1, 2014 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Wireless LANs, especially WiFi, have been pervasively deployed and have fostered myriad wireless communication services and ubiquitous computing applications. A primary concern in designing each scenario-tailored application is to combat harsh indoor propagation environments, particularly...

Thermal Non-Line-of-Sight Imaging
2019 Edition, May 1, 2019 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We propose a novel non-line-of-sight (NLOS) imaging framework with long-wave infrared (IR). At long-wave IR wavelengths, certain physical parameters are more favorable for high-fidelity reconstruction. In contrast to prior work in visible light NLOS, at long-wave IR...

Line of Sight Differentiation via Kalman Filter
1993 Edition, January 1, 1993 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Modern guidance and location systems use a Kalman Filter for target position estimation. Terminal guidance systems for missile interceptors make use of Proportional Navigation (PN), which is a guidance law based upon differentiation of the Line Of Sight...

Maximum MIMO Capacity in Line-of-Sight
2005 Edition, January 1, 2005 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In this paper, we investigate the capacity limits of Multiple-input, multiple-output (MIMO) communication systems in line-of-sight (LoS) environments. Under this scenario, the channel is usually rank deficient due to the linear dependence of...

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