In this paper, we propose a dual-hop decode-andforward (DF) relaying network with beamforming for an unmanned aircraft system (UAS) over κ−μ fading channels. The κ–μ fading model is a general fading model that models wireless fading channel perfectly in line-of-sight (LOS) propagation environments and includes Nakagami-m, Rician, Rayleigh, and One-sided Gaussian fading channels as special cases...

We investigate the influence of feedback on the capacity of multiple-input multiple-output (MIMO) non-coherent fading channels with memory. We derive an upper bound on the feedback capacity of regular fading channels, which is shown to coincide with a previously known upper bound on the capacity without feedback. Hence, it is concluded that whereas feedback does in general increase capacity, th...

This paper presents a new methodology for realizing a Rice channel in BAN Over-The-Air (OTA) testing using a fading emulator with a dynamic phantom. For the proposed apparatus to be effective, the fading emulator must be provided with an appropriate K-factor that represents the actual propagation environment indoors. Further, an implementation of the Rice channel to the proposed fading emulator...

Most MANET (Mobile Ad hoc NETwork) research assumes idealized propagation models. Experimental results have shown significant divergence from simulation results due to the effect of signal fading in realistic wireless communication channels. In this paper, we characterize the impact of fading on protocol performance. We first study the effect of fading on MAC performance and show that its effec...

In this paper, a dual-hop cognitive amplify-and-forward (AF) relay network subject to independent nonidentically distributed (i.n.i.d.) η − μ fading channels is investigated. In the considered network, secondary users (SUs) including one secondary user source (SU-S) and one secondary user relay (SU-R) are allowed to share the same spectral resources with the primary user (PU) simultaneously und...

Exact integral expressions are derived for calculating the symbol-error rate (SER) of multilevel quadrature amplitude modulation (MQAM) in conjunction with L-fold antenna diversity on arbitrary Nakagami fading channel. Both maximal-ratio combining (MRC) (in independent and correlated fading) and equal-gain combining (EGC) predetection (in independent fading) diversity techniques have been consi...

New bounds on the probability of bit error are presented for a coded communication system with binary antipodal modulation and soft-decision maximum-likelihood decoding over a correlated Rayleigh-fading channel. The bounds are closed-form expressions in terms of the code’s transfer function; they are illustrated by considering a system using convolutional encoding. A long-standing conjecture re...

This first part of this report describes the research done on outage probability with Weibull fading environment. The desired signal experiences Weibull fading while the interferer signals experiences Rayleigh fading. The resulting expressions for outage probabilities are derived. Attempts at improving a method of approximation for deriving the outage probability are made. Comparisons are made ...

The character of multipath-induced propagational fading is reviewed, along with the interpretations underlying use of the Ray-leigh fading model to describe the process statistics. The relationship between this model and contemporary laboratory fading simulators is also outlined. The effects of the fading upon data communications are described, along with the techniques of modulation, diversity...

Probability density function (PDF) ,moments of signal and amount of fading (AF) at the output of macrodiversity system in closed form are obtained. Dual maximal-ratio combining (MRC) is implemented at the micro level (single base station) and selection combining (SC) with two base stations (dual diversity) is implemented at the macro level. This model assumes a Nakagami-m density function for t...