The need for low-complexity precoding and the fact that inter-user interference (IUI) lowers spectral efficiency (SE) at user terminals (UTs) make it even more important to find a solution that reduces IUI and increas...
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Orthogonal frequency division multiplexing passive optical network(OFDM-PON) has superior anti-dispersion property to operate in the C-band of fiber for increased optical power budget. However,the downlink broadcast e...
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Orthogonal frequency division multiplexing passive optical network(OFDM-PON) has superior anti-dispersion property to operate in the C-band of fiber for increased optical power budget. However,the downlink broadcast exposes the physical layer vulnerable to the threat of illegal eavesdropping. Quantum noise stream cipher(QNSC) is a classic physical layer encryption method and well compatible with the OFDM-PON. Meanwhile, it is indispensable to exploit forward error correction(FEC) to control errors in data transmission. However, when QNSC and FEC are jointly coded, the redundant information becomes heavier and thus the code rate of the transmitted signal will be largely reduced. In this work, we propose a physical layer encryption scheme based on polar-code-assisted QNSC. In order to improve the code rate and security of the transmitted signal, we exploit chaotic sequences to yield the redundant bits and utilize the redundant information of the polar code to generate the higher-order encrypted signal in the QNSC scheme with the operation of the *** experimentally demonstrate the encrypted 16/64-QAM, 16/256-QAM, 16/1024-QAM, 16/4096-QAM QNSC signals transmitted over 30-km standard single mode fiber. For the transmitted 16/4096-QAM QNSC signal, compared with the conventional QNSC method, the proposed method increases the code rate from 0.1 to 0.32 with enhanced security.
The development of triboelectric nanogenerators (TENGs) using sustainable materials addresses the global electronic waste issue. This research focuses on fabricating a TENG device with biodegradable polylactic acid (P...
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This research explores the potential of a new lead-based 2D perovskite material, ((4F-PEA)2 (FAx MA1-x)4 Pb5 I16), for use as an absorber layer in perovskite solar cells. Utilizing the SCAPS-1D simulation software, we...
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In this article, a compact four-element broadband multiple-input and multiple-output (MIMO) antenna system with a focus on adequate isolation and wide-bandwidth. The MIMO antenna is designed and optimized to cover a b...
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Most e-rickshaws in our country use lead acid batteries, which can be made with local raw materials, recycled easily, and at a lower cost as against lithium-ion batteries (Li-Ion), which use imported raw materials or ...
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The study examines the idea of hand motion control in the busy game community using a novel method. This will help find a unique method to encourage talk among the game and computer vision community. Acquisition of ca...
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Our daily life starts with providing nutrition to our human body. A huge amount of food is provided by the agricultural sector. But always there isn't 100% yield because of some issues like plant diseases, irregul...
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The proposed design uses the 2×2 integration architecture as an array that is recovered to a T-resonator in order to access the Hilbert curve. In conjunction with a transmission line that has two air gaps, the re...
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In recent trends of growth in technologies, data management, maintenance of medical records, sharing of data, diagnosis of disease, and medication are the key areas where digital healthcare plays a vital role. Despite...
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