This article proposes a novel location information aided multiple intelligent reflecting surface (IRS) systems. Assuming imperfect user information, the effective angles from IRS to users are estimated, which is then used design transmit beam and beam. Furthermore, closed-form expressions for achievable rate derived. The analytical findings indicate that can be improved by increasing number of base station (BS) antennas or elements. Specifically, power gain order N M <sup...

The promising coverage and spectral efficiency gains of intelligent reflecting surfaces (IRSs) are attracting increasing interest. To adopt these in practice, however, several challenges need to be addressed. One main is how configure the coefficients on passive without requiring massive channel estimation or beam training overhead. Earlier work suggested leveraging supervised learning tools predict IRS reflection matrices. While this approach has potential reducing overhead, it requires...

In this letter, an intelligent reflecting surface (IRS) enhanced full-duplex MIMO two-way communication system is studied. The sum rate maximized through jointly optimizing the source precoders and IRS phase shift matrix. Adopting idea of Arimoto-Blahut algorithm, non-convex optimization problem decoupled into three sub-problems, which are solved alternatingly. All sub-problems can be efficiently with closed-form solutions. addition, practical assumptions, e.g., discrete levels, also...

Infrastructure-based vehicular networks (consisting of a group Base Stations (BSs) along the road) will be widely deployed to support Wireless Access in Vehicular Environment (WAVE) and series safety non-safety related applications services for vehicles on road. As an important measure user satisfaction level, uplink connectivity probability is defined as that messages from can received by infrastructure (i.e., BSs) through multi-hop paths. While system side, downlink broadcasted BSs all...

Ultra-high-performance concrete (UHPC) has been used as an advanced construction material in civil engineering because of its excellent mechanical properties and durability. However, with the depletion raw (river sand) for preparing UHPC, it is imperative to find a replacement material. Recycled sand alternative but degrades performance. In this study, we investigated use graphene oxide (GO) additive enhancing UHPC prepared from recycled sand. The primary objective was investigate effects GO...

In this work, we study the statistically robust beamforming design for an intelligent reflecting surfaces (IRS) assisted multiple-input single-output (MISO) wireless system under imperfect channel state information (CSI), where estimation errors are assumed to be additive Gaussian. We aim at jointly optimizing transmit/receive beamformers and IRS phase shifts minimize average mean squared error (MSE) user. particular, tackle non-convex optimization problem, efficient algorithm is developed...

In this paper, we propose intelligent reflecting surfaces (IRS) assisted secure wireless communications with multi-input and multi-output antennas (IRS-MIMOME). The considered scenario is an access point (AP) equipped multiple communicates a multi-antenna enabled legitimate user in the downlink at present of eavesdropper configured antennas. Particularly, joint optimization transmit covariance matrix AP coefficients IRS to maximize secrecy rate for IRS-MIMOME system investigated, two...

Rateless Multiple Access (RMA) is a novel non-orthogonal multiple access framework that promising for massive in Internet of Things (IoT) due to its high efficiency and low complexity. In the framework, after certain \emph{registration}, each active user respectively transmits point (AP) randomly based on an assigned random control function (RACf) until receiving acknowledgement (ACK). this work, by exploiting intrinsic pattern user, we propose grant-free RMA scheme, which no longer needs...

The universal filtered multi-carrier (UFMC) has been taken as a promising candidate for future wireless communication, where finite impulse response filter is employed to shape the waveform and enhance its resistance inter-carrier interference. In previous studies, Dolph-Chebyshev had used due low-sidelobe levels, but at cost of low flexibility performance control. Hence, this paper puts forward an effective scheme design anti-interference UFMC system, Nyquist condition (or sampling...

With the merits of high mobility and easy deployment, mounting mobile edge computing (MEC) servers on unmanned aerial vehicles(UAVs) can efficiently fulfill task offloading ground users (GUs) over a large area. Nevertheless, data security is challenging issue for computation in UAV-MEC networks, especially when there exist flying eavesdroppers. An intelligent reflecting surface (IRS) assisted secure communication scheme network proposed this paper, wherein multiple IRSs are utilized to help...

&lt;i&gt;Objective:&lt;/i&gt; We aim to examine the abilities of objective acoustic analysis methods (nonlinear dynamic and traditional perturbation measures) describe voices from individuals with vocal nodules polyps. &lt;i&gt;Subjects Methods:&lt;/i&gt; Sustained vowel recordings normal subjects, patients nodules, polyps were analyzed. Perturbation measures jitter shimmer obtained Multi-Dimensional Voice Program (MDVP) CSpeech. Signal-to-noise ratio was calculated using Nonlinear phase...

This letter investigates an active intelligent reflecting surface (IRS)-aided integrated sensing and communication (ISAC) system in the scenario of cloud radio access network (C-RAN). In system, IRS is deployed to amplify reflect joint signals from remote heads (RRHs). Our goal form desired reflective beam pattern towards targets located non-line-of-sight (NLoS) areas for RRHs, while satisfying signal-to-interference-plus-noise ratio (SINR) requirement users capacity limit fronthaul links...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, we analyze the effects of phase noise to multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems over doubly selective Rayleigh fading channels. Similar single-antenna OFDM, MIMO-OFDM suffers from significant performance degradation due and time-selective fading, which causes intercarrier interference (ICI). We derive expressions...

Abstract Objective/Hypothesis: Vocal fold vibration is associated with four distinct vibratory patterns: those of the right‐upper, right‐lower, left‐upper, and left‐lower vocal lips. The purpose this study was to propose a least squares method quantify properties each lips via videokymography (VKG). Study Design: This methodological designed examine impact subglottal pressure line‐scan position on mucosal wave parameters. Methods: VKG, imaging technique, has proven be an effective for...

Universal filtered multi-carrier (UFMC) is one of the enabling techniques for 5G, which supports sliced spectrum by filtering successive sub-bands. The filter design an essential and challenging issue, critical to performance UFMC. In this paper, we propose a novel UFMC scheme, namely, UFMC-AIC, incorporates active interference cancellation into so as mitigate inter-sub-band interference. A non-convex optimization problem formulated, aims maximize overall signal-to-interference-plus-noise...

In this paper, we consider an asymmetric time-division multiple access relay system consisting of two sources, one and destination, where the channel conditions message lengths sources are allowed to be different. To enhance link robustness throughput, joint network-channel coding (JNCC) is employed with a specially designed rateless code which conducts both network simultaneously. particular, at messages coded then broadcasted destination. While relay, novel two-dimensional (2-D) LT...