The existing ultraviolet (UV) single scattering models do not incorporate the applicability of transceiver geometry, which makes them have certain errors even in short-range cases. To solve this issue, we propose a model Letter, is suitable for case where field view above ground. This meets requirements general UV communication. For tractable analysis, utilize number intersections between special rays on cone to classify communication scenarios. Calculation results show that when elevation...

Existing studies of ultraviolet (UV) communication channel models focus mainly on point-to-point scenarios. To analyze UV characteristics in omni-directional scenarios, we propose a multiple scattering model based the Monte Carlo method this Letter, where assume that receiver can be anywhere certain area and all receivers point to vertical axis transmitter. Meanwhile, validate proposed comparison existing simulation model. Simulation results demonstrate single is not applicable analysis due...

Linear minimum mean square error (LMMSE) receivers are often applied in practical communication scenarios for single-input-multiple-output (SIMO) systems owing to their low computational complexity and competitive performance. However, performance is only the best among all linear receivers, as they minimize bit (MSE) alone space. To overcome this limitation, study, we propose an LMMSE receiver based on measurements augmented by nonlinear conversion a photon-counting receiver,...

In this Letter, a single scattering turbulence model in narrow beam case for ultraviolet (UV) communication is proposed based on the division of effective volume. This takes variation atmospheric scattering, absorption, and different paths into account. Meanwhile, applicable transceiver configurations are provided by analyzing path loss error caused assumption UV channel. Furthermore, we investigate effect probability density function arriving power both coplanar non-coplanar scenarios. The...

In ultraviolet communications, the transceiver jitter effects have been ignored in previous studies, something that can result non-negligible performance degradation especially vibration states or mobile scenes. To address this issue, we model relationship between received power and by making use of a moment-based density function approximation method. Based on relationship, incorporate combination with Poisson distribution. The error rate results are obtained assuming on–off key modulation...

Monte Carlo methods are widely used in ultraviolet communications. However, it needs many simulation photons due to its large path loss. In this paper, we use three improve computation efficiency: antithetic variates method, quasi-random sequence, and parallel computing. Numerical results show that the convergence rate is O(N <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-0.7499</sup> ) for quasi-Monte integration method while...

Unraveling the secrets of how much nonstabilizerness a quantum dynamic can generate is crucial for harnessing power magic states, essential resources achieving advantage and realizing fault-tolerant computation. In this work, we introduce amortized $\alpha$-stabilizer R\'enyi entropy, monotone unitary operations that quantifies generation capability dynamics. Amortization key in quantifying dynamics, as reveal be enhanced by prior input states when considering while not case robustness or...

In the channel estimation for ultraviolet communication, single scattering power is usually used to approximate received total power. This approximation error affected by transceiver configuration. Here, we employ proportion of in indicate model different configurations. useful reducing selecting a more appropriate

A closed-form non-line-of-sight (NLOS) turbulenceinduced fluctuation model is derived for ultraviolet scattering communication (USC), which models the received irradiance by Meijer G function. Based on this model, we investigate error rates of USC system in NLOS case using different modulation techniques. Closed-form rate results are integration Inspired decomposition turbulence parameters, use a series expansion hypergeometric function and obtain expressions sum four infinite series. The...

We propose an efficient protocol to estimate the fidelity of $n$-qubit entangled measurement device, requiring only qubit state preparations and classical data post-processing. It works by measuring eigenstates Pauli operators, which are strategically selected according their importance weights collectively contributed all operators. rigorously analyze protocol's performance demonstrate that its sample complexity is uniquely determined number operators possessing non-zero expectation values...