In-home healthcare services based on the Internet-of-Things (IoT) have great business potential; however, a comprehensive platform is still missing. In this paper, an intelligent home-based platform, iHome Health-IoT, proposed and implemented. particular, involves open-platform-based medicine box (iMedBox) with enhanced connectivity interchangeability for integration of devices services; pharmaceutical packaging (iMedPack) communication capability enabled by passive radio-frequency...

To enable high-speed long-distance underwater optical wireless communication (UOWC) supplementing traditional communication, a low-power 520 nm green laser diode (LD) based UOWC system was proposed and experimentally demonstrated to implement maximal capacity of up 2.70 Gbps data rate over 34.5 m transmission distance by using non-return-to-zero on-off keying (NRZ-OOK) modulation scheme. Moreover, maximum rates 4.60 Gbps, 4.20 3.93 3.88 3.48 at distances 2.3 m, 6.9 11.5 16.1 20.7 were...

High-speed underwater optical wireless communication (UOWC) was achieved using an 80 μm blue-emitting GaN-based micro-LED. The micro-LED has a peak emission wavelength of ~440 nm and power attenuation 1 dB/m in tap water. -3 dB electrical-to-optical modulation bandwidth the packaged increases with increasing current saturates at ~160 MHz. At distance 0.6 m, 800 Mb/s data rate bit error (BER) 1.3 × 10-3, below forward correction (FEC) criteria. And we obtained 100 speed received light output...

Abstract Protein self‐assembly allows for the formation of diverse supramolecular materials from relatively simple building blocks. In this study, a single‐component self‐assembling hydrogel is developed using recombinant protein CsgA, and its successful application spinal cord injury repair demonstrated. Gelation achieved by physical entanglement CsgA nanofibrils, resulting in self‐supporting at low concentrations (≥5 mg mL −1 ). By leveraging programmability gene sequence, bioactive...

In this investigation, we experimentally demonstrated a high-speed Gbps long-distance real-time visible light communication system based on non-return-to-zero on-off keying modulation by using high-bandwidth Gallium nitride-based micro-LED with bandwidth of ∼230 MHz and size 40 <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> m <inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$ \times...

White light generated by mixing the red, green, and blue laser diodes (RGB LDs) for simultaneous high-speed underwater wireless optical communication (UWOC) high-efficiency solid-state lighting (SSL) was proposed demonstrated experimentally first time. The allowable maximum real-time data transmission rates of 3.2 Gbps, 3.4 3.1 Gbps RGB LDs with corresponding BERs 3.6 × 10-3, 3.5 10-3 3.7 were obtained at a 2.3 m distance using an on-off keying (OOK) modulation scheme, respectively. And UWOC...

In this Letter, high-speed optical wireless communication (OWC) with three light-emitting diodes (LED) and five micro-LEDs (μLEDs) is proposed as a proof-of-concept wavelength division multiplexing (WDM) system. It covers wide spectrum from deep ultraviolet (UV) to visible light thus could offer both (VLC) UV simultaneously. An aggregated data rate of up 25.20 Gbps over 25 cm free space achieved, which, the best our knowledge, highest for LED-based OWC ever reported. Among them, μLEDs 18.43...

Predictive maintenance techniques are designed to help anticipate equipment failures allow for advance scheduling of corrective maintenance, thereby preventing unexpected downtime, improving service quality customers, and also reducing the additional cost caused by over-maintenance in preventative policies. Many types equipment—e.g., automated teller machines (ATMs), information technology equipment, medical devices, etc.—track run-time status generating system messages, error events, log...

In this study, we built a single photon avalanche diode (SPAD) receiver based underwater wireless optical communication (UWOC) system. The bit error rate (BER) and signal-to-noise ratio (SNR) performance of UWOC with different distances data transmission rates were obtained. Based on the water attenuation coefficient 0.12 m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> , series neutral density (ND) filters exploited to attenuate light...

Benefiting from technological advances in the smart grid era, next-generation multi-input multi-output (MIMO) communication systems are expected to be powered by renewable energy sources (RES) integrated distribution grid, thus realizing vision of “green communications.” However, penetration renewables introduces variabilities traditional power system, making RES benefits achievable only after appropriately mitigating their inherently high variability, which challenges existing resource...

In this work, a blue gallium nitride (GaN) micro-light-emitting-diode (micro-LED)-based underwater wireless optical communication (UWOC) system was built, and UWOCs with varied Maalox, chlorophyll, sea salt concentrations were studied. Data transmission performance of the UWOC influence light attenuation investigated systematically. Maximum data rates at distance 2.3 m 933, 800, 910, 790 Mbps for experimental conditions no impurity, 200.48 mg/m3 12.07 5 kg/m3 salt, respectively, much higher...

SUMMARY A network‐coded cooperative relaying aided free‐space optical (FSO) transmission scheme is designed. The resultant multiple‐source cooperation diversity exploited by the relay to mitigate strong turbulence‐induced fading experienced in FSO channels. At destination, an iterative multiple source detection algorithm proposed conjunction with a chip‐level soft network decoding method. Our performance evaluation results using simulation analysis demonstrate that capable of approaching...

Automatic modulation recognition (AMR) is an integral part of intelligent transceiver for future underwater optical wireless communications (UOWC). In this paper, orthogonal frequency division multiplexing (OFDM) based progressive growth meta-learning (PGML) AMR scheme proposed and analyzed over UOWC turbulence channels. The novel PGML few-shot framework, mainly suffering from the severe environments, can achieve fast self-learning new tasks with less training time data. algorithm,...

In this paper, we design a novel Poisson photon-counting based iterative successive interference cancellation (SIC) scheme for transmission over free-space optical (FSO) channels in the presence of both multiple access (MAI) as well Gamma-Gamma atmospheric turbulence fading, shot-noise and background light. Our simulation results demonstrate that proposed exhibits strong MAI suppression capability. Importantly, an order magnitude BER improvements may be achieved compared to conventional...

The large-signal modulation characteristics of a GaN-based micro-LED have been studied for Gbps visible-light communication. With an increasing signal depth the bandwidth decreases, which matches up with increase in sum rise time and fall time. By simulating band diagram carrier recombination rate under modulation, sweep-out effect are analyzed found to be dominant mechanisms behind variation bandwidth. These results give further insight into improving high-speed

This paper gives an experimental demonstration of non-line-of-sight (NLOS) visible light communication (VLC) using a single 80 μm gallium nitride (GaN) based micro-light-emitting diode (micro-LED). device shows 3-dB electrical-to-optical modulation bandwidth 92.7 MHz. IEEE 802.11ac scheme with MHz bandwidth, as entry level the fifth generation Wi-Fi, was employed to use micro-LED efficiently. These practical techniques were successfully utilized achieve line-of-sight (LOS) VLC at speed 433...

Selection relaying is a promising technique for practical implementation of cooperative systems with multiple relays. However, to select the best relay, globe channel knowledge required at selecting entity. In this paper, we consider relay selection problem in dual-hop amplify-and-forward (AF) communication partial state information (CSI). We present strategies aiming minimizing outage probability different kinds available, including perfect, statistical and quantized CSI. Simulation results...

In this paper, we consider the design of a network-coded cooperation (NetCC) transmission scheme for free-space optical (FSO) two-way relay networks (TWRN). The achieved spatial diversity gain can effectively enhance FSO communication quality over strong turbulence channels. Different from traditional assumption perfect channel state information (CSI) prior known at destination, develop an optimal bit detection method based on Bayesian estimate receiving nodes in absence CSI. We then derive...

In energy harvesting (EH) networks, the storage devices (i.e., batteries) are usually not perfect. this paper, we consider a practical battery model with finite capacity, (dis-)charging loss, and dissipation. Taking into account such imperfections, rely on Lyapunov optimization technique to develop stochastic online control scheme that aims maximize utility of data rates for EH multi-hop wireless networks. It is established proposed algorithm can provide feasible efficient admission, power...

Photon counting is an effective technique to detect low-power optical signals in underwater wireless communications (UOWC), but undergoes signal-dependent Poisson shot noises that lead intractable data rate expressions and hinder power allocation of photon-counting systems. This paper presents a new approach the optimal multiuser UOWC system, where we first derive asymptotic achievable as background radiation large under noises. With tractability rate, formulate problem maximize weighted...