https://www.paradigmpress.org/jpeps <p><a href="https://www.paradigmpress.org/jpeps/about"> <img src="https://www.paradigmpress.org/public/journals/10/journalThumbnail_en_US.jpg" /> </a></p> Paradigm Academic Press Limited en-US Journal of Progress in Engineering and Physical Science 2709-4006 https://www.paradigmpress.org/jpeps/article/view/1976 <p>The paper “Cosmological Consequences of the Lorentz and Doppler Transformations” by Vaclav Vavryčuk claims that the Lorentz transformation’s physical interpretation is flawed and advocates for a “Doppler metric” instead of the standard Minkowski metric as a better description of spacetime distortion, an idea that contradicts the well-established foundation of Einstein’s Special Relativity and is not supported by mainstream physics.</p> A. Sfarti Copyright (c) 2026 2026-02-11 2026-02-11 5 1 1 3 10.63593/JPEPS.2026.03.01 https://www.paradigmpress.org/jpeps/article/view/1988 <p>This paper examines the implementation of Wi-Fi devices in signal-processing methods to transmit and receive data reliably in complex wireless networks. It describes radio signal mechanisms at the physical layer for transmitting digital information and decoding it at the other end, accounting for noise, interference, and multipath fading. Such technologies as Orthogonal Frequency Division Multiplexing (OFDM), Multiple-Input Multiple-Output (MIMO), and Channel State Information (CSI) are examined to demonstrate how contemporary Wi-Fi systems become very fast and powerful. It also discusses how these signal-processing techniques support uses like Wi-Fi sensing, security surveillance, and health tracking.</p> Chenglu Zhou Copyright (c) 2026 2026-02-24 2026-02-24 5 1 4 8 10.63593/JPEPS.2026.03.02