A new Ricean parameter estimator is considered in the context of wireless communications. THE Ricean distribution occurs frequently in the applied sciences.ing Rayleigh and Ricean within the ns network simulator. It allows for the faithful simulation of a complete fading envelope. The fading models have the.the diffuse component is the Ricean factor, which measures the. The multivariate Ricean ...

Multiple-input multiple-output (MIMO) mobile ad hoc networks have been receiving increased attention in both commercial and military applications. Just as in cellular networks, MIMO technologies can benefit ad hoc networks by providing the diversity and capacity advantages as well as the spatial degree of freedom in designing the media access control (MAC) protocol. However, one fundamental iss...

Introduction: To extend the present mediumjlarge cell mobile radio systems [I] towards ubiquitous communications, the microcellular approach looks promising [Z]. A major problem in cellular radio systems, regardless of having micro or mediumflarge cell architecture, is the presence of cochannel interference because of frequency reuse. Extensive studies on the effects of cochannel interference i...

-In this paper, the k-μ random variable will be considered and closed form expressions for probability density function (PDF), cumulative distribution function (CDF) and moments for this distribution will be derived. Also, product, ratio, maximum and minimum of two k-μ random variables will be studied and PDFs of these functions calculated in the closed forms. Then, obtained statistical functio...

The study of ionospheric scintillation belongs to the class of problems dealing with wave diffraction and propagation through a random medium, and its complete theoretical solution is presently not available. Approximate solutions or models, such as the 'thin phase diffraction screen model' and the 'Rytov solution for weak scintillation', have been proposed and do apply under restrictive condit...

Performance analysis of equal-gain combining (EGC) diversity systems is notoriously difficult only more so given that the closed-form probability density function (pdf) of the EGC output is only available for dual-diversity combining in Rayleigh fading. In this paper, a powerful frequency-domain approach is therefore developed in which the average error-rate integral is transformed into the fre...

.ABSTRACT Exact analytical expression in a simple form for computing the average symbol error rate (SER) of an arbitrary two-dimension signaling format with equal-gain diversity (EGC) receiver is not available in the literature despite its practical and theoretical importance. The principle difficulty is finding a closed-form expression for the probability density function (PDF) of a sum of L (...

In this thesis, the outage probabilities of correlated sources transmission systems are analyzed. The primary goal of this work is to derive theoretical limit for correlated sources transmission which utilize the source correlation, and to establish theoretical bases for wireless cooperative communications system design utilizing the correlated sources transmission concept. We focus on the prob...

One of the main design challenges in wireless sensor networks (WSNs) is achieving a high-data-rate transmission for individual sensor devices. The high altitude platform (HAP) is an important communication relay platform for WSNs and next-generation wireless networks. Multiple-input multiple-output (MIMO) techniques provide the diversity and multiplexing gain, which can improve the network perf...

This article describes a significantly improved sum-of-sinusoids-based model for the accurate simulation of time-correlated Rayleigh and Rician fading channels. The proposed model utilizes random walk processes instead of random variables for some of the sinusoid parameters to more accurately reproduce the behavior of wireless radio propagation. Every fading block generated using our model has ...