Underground mines are challenging environments for off-body wireless communication, since the signal propagation is majorly affected by small scale and large scale fading. The use of multiple antennas at the transmitter and the receiver sides is a known technique to combat fading and enhance capacity. In this paper, the channel parameters of a 2 × 2 Multiple-Input MultipleOutput (MIMO) off-body...

The degrees of freedom (DoFs) attained in monostatic integrated sensing and communications (ISAC) are analyzed. Specifically, aims for extracting target-orientation information from the line sight (LoS) channel between transmitter target, since Non-LoS (NLoS) paths only contain clutter or interference. By contrast, wireless communications, typically, both LoS NLoS exploited achieving diversity ...

With the continuous development of artificial intelligence technology, visible-light positioning (VLP) based on machine learning and deep algorithms has become a research hotspot for indoor technology. To improve accuracy robot positioning, we established three-dimensional (3D) system consisting two LED lights three photodetectors. In this system, photodetectors are located robot’s head. We con...

Non-Line-of-Sight (NLoS) propagation condition is a crucial factor affecting the precision of localization in Ultra-Wideband (UWB) Indoor Positioning System (IPS). Numerous supervised Machine Learning (ML) approaches have been applied for NLoS identification to improve accuracy IPS. However, it difficult existing ML maintain high classification when database contains small number signals and la...

Intelligent reflecting surface (IRS) is a rapidly emerging paradigm to enable non-line-of-sight (NLoS) wireless transmission. In this paper, we focus on IRS-aided radar estimation performance of moving hidden or NLoS target. Unlike prior works that employ single IRS, investigate problem using multiple IRS platforms and assess the by deriving associated Cramér-Rao lower bound (CRLB). We then des...

Abstract Multipath interference seriously degrades the performance of Global Navigation Satellite System (GNSS) positioning in an urban canyon. Most current multipath mitigation algorithms suffer from heavy computational load or need external assistance. We propose a algorithm based on steepest descent approach, which has merits less and no for aid. A new ranging code tracking loop is designed ...

Underwater optical wireless communication (UOWC) systems have been widely studied to achieve high-speed communications. To investigate and design UOWC systems, a mathematical model characterize the accurate performance of is important. However, previous models limitations, which mainly focused on line-of-sight (LOS) link, only considered vertical incident background light or filters with consta...

Direct eye-pattern measurements based on a deep-ultraviolet (DUV) light emitting diode (LED) optical wireless communication system were performed in sunlight. A state-of-the-art, high-power DUV-LED was developed and used as transmitter consisting of only one LED chip with output power greater than 500 mW at its peak emission wavelength 265 nm. DUV receiver also that excluded sunlight high perfo...

Simple and accurate expressions for path gain are derived from electromagnetic fundamentals in a wide variety of common environments, including Line-of-Sight (LOS) Non-Line-of-Sight (NLOS) indoor urban canyons, urban/rural macro, outdoor-indoor suburban streets with vegetation. Penetration into scattering region, sometimes aided by guiding, is the "universal" phenomenon shared diverse morpholog...

Abstract Wireless connectivity has been realized for multiple environments and different frequency bands. However, little research exists about mmWave communication in industrial environments. This paper presents the 60 GHz double-directional radio channel a ship hull Line-of-Sight (LOS) non-Line-of-Sight (NLOS) conditions. We performed measurements using Terragraph sounder at locations fitted ...