M.A. Zuñiga Zamalloa
63 records found
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The advancement in transparent screen technology has promoted adoption of full-screen design on mobile devices, reducing the area occupied by optical sensors to maximize the devices' screen-to-body ratio. In modern smartphones, front-facing optical sensors, such as ambient light
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Sunlight-based Passive VLC
Utilizing the sun to establish wireless connections
Nowadays,wireless connectivity is ubiquitous: humans use smartphones, smartwatches, laptops and other devices, while at the same time, the Internet of Things (IoT) is adding millions of connected objects. This large number of devices uses mainly the radio frequency (RF) spectrumf
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LightVest
A smart vest to provide visible light communication inside pockets
Visible light communication (VLC) has gained attention recently as radio frequencies become increasingly congested. VLC offers a promising alternative for wireless communication with several advantages: It provides 10 times more bandwidth than traditional radio frequencies, is mo
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Indoor localization technology has become increasingly crucial as the demand for precise and reliable positioning systems grows across various applications. Traditional methods, such as vision-based techniques, radio signal-based technologies (including UWB, WiFi, RFID, and Bluet
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Modern building facades and indoor partition walls feature large amounts of transparency for sufficient lighting and social safety. However, this transparency leads to concerns about privacy invasion, as sensitive objects, such as computer monitors, are exposed to onlookers. The
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Visible Light Communication (VLC) leverages the visible light spectrum to establish wireless communication, offering advantages such as broader bandwidth, and reduced energy consumption compared to traditional radio frequency methods. VLC offers two main approaches: passive and a
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Crowd-control is an emerging problem in urban areas and cameras are commonly seen as the solution, however, there are major concerns regarding privacy. To overcome these issues, while still maintaining the ability to keep track of people, mmWave sensors can be utilized instead, b
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Temporal Dynamics in Human Pose Estimation Models
Monitoring people without cameras: Privacy is important!
Human Pose Estimation using Millimeter Wave radars has emerged as a promising alternative to traditional camera-based systems, addressing privacy and deployment constraints. While state-of-the-art Deep Learning models predominantly focus on spatial feature extraction to determine
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Tracking People for an mmWave-Based Interactive Game
Reducing Stationary Target Noise in Tracking and Movement Reconstruction
Interactive video games often use vision-based systems or wearables to track player movements. Vision-based systems are privacy-invasive, and wearables require frequent recalibration and recharging. Frequently-Modulated Continuous-Wave (FMCW) radars have been proposed as an alter
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Exploring the Spatial Characteristics of MARS
Assessing the Impact of Neural Net Depth Increase and PointNet Architecture Integration on MARS Performance
The modern workplace often exposes individuals to privacy risks, such as the unauthorised visibility of their computer screens. MARS (mmWave-based Assistive Rehabilitation System for Smart Healthcare), coupled with VideowindoW screens, offers an innovative solution to these threa
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Temporal Dynamics Modelling for People Counting in Point Clouds
An Extension on PointNet and MARS through LSTM Integration
The People Counting Problem requires calculating the number of people in a region of interest. This is needed in crowd-monitoring scenarios but has become increasingly problematic when relying on video cameras, as they raise privacy concerns. Instead, we propose using a mmWave ra
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Sound pollution is becoming an increasingly pressing issue in today’s world. To effectively address it, it must be measured. To this end, Serval was developed, an edge-ai powered sound recognition solution. Its lack of accuracy, however, makes it difficult to deploy. This thesis
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In the ever-evolving field of music technology, new solutions continue to emerge that enhance musical expression and creativity. This thesis introduces WaveTune, a novel lightweight hand gesture recognition system that enables real-time control of musical composition and performa
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Drones that perform complex autonomous movements require a perfect estimate of their current position. However, internal measurement unit (IMU) errors introduce drift in this estimate, leading to significant discrepancies between the predicted and actual location. Various solutio
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The advancement of wireless communication technologies has transformed how we exchange information in our daily lives. However, the increasing demand for wireless communication faces challenges due to limited radio wave bandwidth availability. In this context, visible light commu
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In recent years, with the rapid expansion of IoT (Internet of Things) devices, more and more research and commercial projects have focused on various application areas of IoT. Signify, as a leading player in the smart home industry, has been deeply involved in this field for many
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This thesis describes the design and implementation of Coloured Multiple Pulse Position Modulation (CMPPM) which is a novel Visible Light Communications (VLC) modulation scheme focusing on expanding upon the standard Pulse Position Modulation (PPM) via taking advantage of the inf
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Due to trends such as the Internet of Things, there has been a growing number of devices that use wireless technologies for communication. This increase leads to bandwidth limitations that forced researchers to explore other types of wireless communication. One of these alternati
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The current wireless networks can face congestion issues due to the increasing number of digital devices. One way to overcome this is to establish communica-tion at a different range of frequencies, specifically in visible light. Most studies in Visible Light Communication (VLC)
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In the last decades our usage of the Radio Frequency (RF) spectrum has intensified a lot due to the increasing number of mobile devices. The spectrum is getting crowded and new communication alternatives might become necessary in the future. One such alternative is Visible Light
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