We analyze the performance of ultra-wideband (UWB) communications in presence interference. Closed-form expressions are provided for jam resistance UWB with binary pulse position modulation utilizing rectangular pulses. A simple approximation is obtained special case tone The analysis extended to more practical waveforms such as Gaussian and Rayleigh monocycles. comparison between interference suppression capabilities direct-sequence spread-spectrum (DS-SS) carried out under conditions...

We compute the channel capacity of M-ary pulse position modulation (PPM) ultra-wideband (UWB) communications over additive white Gaussian noise channel. The computation extends known PPM orthogonal signals to incorporate UWB-specific constraints. constraints are power spectrum density limitation under FCC Part 15 rules and a specified spreading ratio. UWB is expressed as function range demonstrating fundamental trade-off in system design. also compared phase shift keying (PSK) direct...

Bio-based polyurethanes are promising for the controlled release of nutrients and fertilizers, but their toughness plasticity need to be improved. We developed a smooth, dense, elastic, indestructible bio-based polyurethane (BPU) coating with nutrient ∼150% superior, tensile strength ∼300% higher, ∼1200% higher than those original BPU coating. Through one-step reaction soybean oil polyols (accounting more 60%), isocyanate, benzil dioxime, dynamic covalent network based on oxime-carbamate...

In this paper we compute the channel capacity of M-ary pulse position modulation ultra-wideband (UWB) communications over multiple-access channels. Under certain assumptions, noise component at receiver can be modeled as Gaussian. An expression for signal-to-noise ratio is developed UWB utilizing rectangular pulses. The information theoretic system expressed a function number users. Utilizing expressions developed, other trade-offs determined between parameters and capacity.

Life detection radar can detect human physiological signals (respiration, heartbeat, body movement, etc.) from a long distance away by penetrating nonmetal mediums (brick walls, ruins, etc.). However, interference is often caused respiratory movements of the radar's operator when detecting vital signs another target. The accuracy be significantly influenced this kind interference. In letter, an experimental setup with dual-frequency continuous-wave life investigated. system operates...

Optical interconnects are being discussed as a replacement for conventional electrical and expected to be applied future generations of high-performance supercomputers data centers. Benes networks have attracted much attention because they require only 2 × optical switches, which reduce the cost rearrangeable nonblocking. However, power imbalances can significantly challenge receiver sensitivity. In this work, insertion loss (IL) fairness has been proposed field switches achieve relative...

We study the information theoretic capacity of M-ary pulse position modulation (PPM) ultra-wideband (UWB) communications for multi-user channels. Under certain assumptions, multiple-access interference component at receiver is modeled as Gaussian. An expression signal-to-noise ratio developed UWB utilizing rectangular pulses. The system studied a function number users. A closed form and lower bound are found case binary PPM. upper on aggregate large

This page proposed an intelligent transfusion control and monitoring system which designed by using AT89S52 micro controller as the core, keyboard photoelectric sensor input module, digital tube motor output module. The is independent can offer reliable detection for liquid drop speed bottle page. When amount less than warning value, sounded alarm, you remove alert hand movement. With advantages of controllable pulse power be maintained motor, through upper lower slow-moving drip to purpose.

In this paper we analyze the performance of ultra-wideband (UWB) communications in presence interference. The interference is modeled as a zero mean random process with constant power spectral density over certain bandwidth. Closed-form expressions are developed for processing gain pulse position modulation UWB utilizing rectangular pulses. Simple approximations obtained special cases (narrowband and wideband interference). We compare suppression properties direct-sequence spread spectrum...

To improve the reliability and energy efficiency of datacenters, as well to reduce infrastructure costs environmental impacts, we demonstrated evaluated use a 10 kW Proton Exchange Membrane Fuel Cell (PEMFC) stack system for powering servers in data center. In this study, designed, tested PEMFC Distributed Generation (DG) prime mover that has high both steady state dynamic operations. The 10kW was designed power server rack eliminate distribution datacenter. electrical properties such...

Human body communication (HBC) using the human as transmission medium, which has been regarded one of most promising short-range communications in wireless area networks (WBAN). Compared to traditional networks, two challenges are existed HBC based WBAN. (1) Its sensor nodes should be energy saving since it is inconvenient replace or recharge battery on these nodes; (2) coordinator able react dynamically and rapidly burst traffic triggered by sensing events. Those conditions include vital...

Driving cycle (DC) plays an important role in designing and evaluating EVs, many Markov chain-based DC construction methods describe driving profiles of unfixed-line vehicles with state transition probability. However, for fixed-line electric vehicles, the time-sequence microtrips brings huge influences on their brake, drive, battery management systems. Simply describing topography, traffic, location, features, environment a stochastic manner cannot reflect continuity characteristics hidden...

Non-enzymatic glycation reaction in food can produce diet‑derived advanced end products (dAGEs), which have potential health risks. Thus, it is of great significance to find efficient substances improve the negative effects induced by dAGEs on human health. This study investigated intervening peanut skin procyanidins (PSP) dAGEs-induced oxidative stress and systemic inflammation experimental mice model. Results showed that accumulation AGEs serum, liver, kidney was significantly increased...

In wireless networks current standard MAC layer protocols don't provide any error correction scheme for broadcast/multicast. this paper, we enhance a Leader Based Protocol (LBP) and propose Beacon-driven (BLBP) the multicast control. To guarantee very low Packet Loss Ratio (PLR) under strict delay constraints video over Gilbert-Elliott (GE) channel, analyze BLBP compare it with LBP different application control schemes via simulation experiments. Both theoretical analysis results show that...

Based on the method of distributed power control, a MAC protocol used for underwater acoustic sensor networks (UW-ASN) has been proposed in this paper. It dynamically controls and adjusts data transmission to overcome near-far problem adopting multiple access technique CDMA. And it also improves traditional handshake mechanism achieve high throughput low energy consumption. Simulation results show that performance new is more excellent than protocols.

This paper proposes a dual-path convolutional recurrent network with group attention for ICASSP Signal Processing Grand Challenge: L3DAS23 Challenge. We design structure based on encoder-decoder, and frequency-time blocks are introduced in the middle. The encoder is used to extract local representation from complex spectrum, correlation along frequency axis time captured through groups of time-frequency processing modules key information feature flow extracted by attention. As result, our...

An effective way of increasing the effectiveness, energy use decline, and reducing emissions are Combined Cooling, Heating, Power (CCHP) system. In this paper, an optimization procedure based on a new modified metaheuristic method, called Modified Harris Hawks Optimization (MHHO) algorithm has been introduced for developing efficiency CHP system in with regards to economics, environment, thermodynamics assessment. The CCHP includes 5-kW Proton-Exchange Membrane (PEM) Fuel Cell stack...