We consider the use of Fisher-Snedecor F distribution, which is defined as ratio two chi-squared variates, to model composite fading channels. In this context, root-mean-square power a Nakagami-m signal assumed be subject variations induced by an inverse Nakagamim random variable. Comparisons with physical channel data demonstrate that proposed provides good, and in most cases better, fit compared generalized-K model. Motivated result, simple novel expressions are derived for key statistical...

Emerging cellular technologies such as those proposed for use in 5G communications will accommodate a wide range of usage scenarios with diverse link requirements. This include the necessity to operate over versatile set wireless channels ranging from indoor outdoor, line-of-sight (LOS) non-LOS, and circularly symmetric scattering environments which promote clustering scattered multipath waves. Unfortunately, many conventional fading models adopted literature develop network lack flexibility...

The <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\kappa $ </tex-math></inline-formula> - notation="LaTeX">$\mu / inverse gamma and notation="LaTeX">$\eta composite fading models are presented extensively investigated in this paper. We derive closed-form expressions for the fundamental statistics of model, such as probability density function (PDF), cumulative distribution (CDF). Additionally, we solve...

This paper investigates the characteristics of shadowed fading observed in off-body communications channels at 5.8 GHz. is realized with aid κ-μ/gamma composite model, which assumes that transmitted signal undergoes κ-μ fading, subject to multiplicative shadowing. Based on this, total power multipath components, including both dominant and scattered non-negligible variations follow gamma distribution. For this we present an integral form probability density function (PDF) as well important...

The F composite fading model was recently proposed as an accurate and tractable statistical for the characterization of conditions encountered in realistic wireless communication scenarios. In present contribution, we capitalize on distinct properties this to derive analytical framework then evaluate achievable channel capacity over channels under different state information (CSI) assumptions. To end, first consider that CSI is known only at receiver, which novel analytic expressions optimum...

In this paper, we investigate the performance of energy detection-based spectrum sensing over F composite fading channels. To end, an analytical expression for average detection probability is first derived. This then extended to account collaborative sensing, square-law selection diversity reception, and noise power uncertainty. The corresponding receiver operating characteristics (ROC) are analyzed different conditions signal-to-noise ratio (SNR), uncertainty, time-bandwidth product,...

In this letter, we report the results of a series experiments which were performed to examine impact terminal handling and movement upon user equipment (UE) evolved NodeB (eNB) communications channel at 60 GHz. Three key utilization scenarios, in imitated making voice call, sending text message or simply carrying device pocket, are investigated. Each these three cases studied under line sight (LOS) non-LOS (NLOS) conditions when was mobile range different indoor outdoor small cell scenarios....

In this paper, we extensively investigate the way in which <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\kappa $ </tex-math></inline-formula> - notation="LaTeX">$\mu fading channels can be impacted by shadowing. Following from this, a family of shadowed models are introduced and classified according to whether underlying undergoes single or double total, discuss three types <italic...

This work investigates the secrecy capability of energy harvesting based overlay cognitive networks (EHOCNs). To this end, we assume that a message by licensed transmitter is relayed an unlicensed sender. Critically, sender uses harvested from signals, enhancing overall efficiency and maintaining integrity communications. secure messages broadcast against wire-tapper, full-duplex destinations – recipient receiver jam eavesdropper at same time they receive signals effect, derive closed-form...

In the era of rapid development Internet Things (IoT), numerous machine-to-machine technologies have been applied to industrial domain. Due divergence IoT solutions, industry is faced with a need apply various for automation and control. This fact leads demand an establishing interworking mechanism which would allow smooth interoperability between heterogeneous devices. One major protocols widely used today in electronic devices Modbus. However, data generated by Modbus cannot be understood...

Statistical distributions have been extensively used in modeling fading effects conventional and modern wireless communications. In the present work, we propose a novel κ - μ composite shadowed model, which is based on valid assumption that mean signal power follows inverse gamma distribution instead of lognormal or commonly distributions. This has simple relationship with distribution, but most importantly, its semi heavy-tailed characteristics constitute it suitable for applications...

In this paper we propose a new composite fading model which assumes that the mean signal power of an η — μ envelope follows inverse gamma distribution. The distribution has simple relationship with and can be used to shadowed due its semi heavy-tailed characteristics. To demonstrate utility / model, investigate characteristics behavior observed in body centric communications channels are known susceptible shadowing effects, particularly generated by human body. It is shown provided excellent...

Indoor areas, such as offices and shopping malls, are a natural environment for initial millimeter-wave (mmWave) deployments. Although we already have the technology that enables us to realize indoor mmWave deployments, there many remaining challenges associated with system-level design planning such. The objective of this article is bring together multiple strands research provide comprehensive integrated framework performance evaluation systems. This introduces status update on technology,...

A performance analysis of the effective capacity in two recently proposed generalized composite fading channels, namely <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\kappa $ </tex-math></inline-formula> - notation="LaTeX">$\mu /inverse gamma and notation="LaTeX">$\eta is conducted. To this end, accurate analytic expressions for are derived along with simple tight bound representations. Additionally,...

In this letter, we derive exact closed-form expressions for the level crossing rate (LCR) and average fade duration (AFD) of signal envelope in F composite fading channels. Using novel expressions, then investigate behavior LCR AFD different multipath shadowing conditions. It is shown that has a more significant effect on at lower levels while tends to have discernible impact higher threshold levels. contrast, noticeable compared both Approximate are also provided, be good agreement with as...

This letter investigates the first-order characteristics of dynamic off-body communications channels at 60 GHz. In particular, we have studied signal propagation from a chest-worn millimeter-wave transmitter as an adult male walked toward and then away hypothetical base station. The mobile line-of-sight (LOS) non-LOS (NLOS) channel measurements been conducted in diverse range environments, including hallway, open office, anechoic chamber, outdoor car park. this study, decomposed received...

The use of millimeter wave technologies offer a promising solution for dense small cell networks, despite having to contend with challenging propagation characteristics. In particular, user-induced effects can lead significant channel variations depending on the user equipment (UE) usage mode which in turn, impact quality service. Estimation UE operating conditions is therefore critical optimal radio resource management. We propose new approach activity recognition makes both supervised and...

This communication investigates the potential improvement in signal reliability for indoor off-body communications channels operating at 5.8 GHz using switched diversity techniques. In particular, we investi-gate performance of switch-and-stay combining (SSC), switch-and-examine (SEC), and (SECps) schemes, which utilize multiple spatially separated antennas base station. During measurements, a test subject, wearing an antenna on his chest, performed number walking movements toward then away...

Several RPT sensors have been developed to acquire objective and quantitative pulse waves. These offer improved performance with respect pressure calibration, size sensor deployment, but not temperature. Since most are sensitive temperature, various temperature compensation techniques developed, these largely inapplicable due the restrictions of sensor, incompatibility between sensor. Consequently, in this paper a new comprising six piezoresistive one thermistor has through finite element...

Abstract In traditional Chinese and Korean medicine, doctors first observe a patient’s pulse by gently strongly pressing their fingers onto the wrist, then make diagnosis based on observed waves. The most common method to implement this diagnostic technique is mechanically extract waves applying fixed range of pressures for all patients. However, does not consider patients individual characteristics such as age, sex, skin thickness. present study, we propose new wave extraction that...

The η-μ / inverse gamma and κ-μ distributions were recently introduced as particularly flexible tractable composite fading models that provide accurate characterization of multipath shadowing effects, which are encountered simultaneously during wireless transmission in emerging communication scenarios such off-body, cellular vehicular-to-vehicular communications. present contribution analyzes the symbol error rate performance digital communications over these channels. To this end, we derive...

This paper investigates the potential improvement in signal reliability for outdoor wearable communications channels operating at 868 MHz using switched combining based macro-diversity. In this paper, a number of different macrodiversity configurations consisting two and four base stations were considered to help mitigate impact body shadowing upon node, which was located on central chest region an adult male. During field measurements, five walking movements performed, then analyzed...

In this paper, we investigate the characteristics of composite fading observed in non-line-of-sight (NLOS) off-body communications channels using η-μ/inverse gamma distribution. We use a number different datasets obtained from NLOS measurements which have been performed range environments at 5.8 GHz and 60 GHz. all cases, bodyworn node was positioned on front-central chest region an adult male. It is shown that model provides excellent fit to measurement data for considered cases. Using...