@article {12053057320170104, title = {A tight approximate analytical framework for performance analysis of equal gain combining receiver over independent Weibull fading channels.}, journal = {EURASIP Journal on Wireless Communications \& Networking}, volume = {2017}, number = {1}, year = {2017}, pages = {1 - 12}, abstract = {In this paper, a method for approximating the probability distribution of sum of independent and identical Weibull random variables is adopted to analyze the performance of equal gain combiner (EGC) receiver over non-identical Weibull fading channel (WFC). Our main result is to derive a generalized expression of the probability density function (PDF) of the signal-to-noise ratio (SNR) at the EGC output in the case of non-identical WFC. Based on this PDF, accurate approximation of significant performance criteria, such as outage probability (OP), the amount of fading (AoF), and average symbol/bit error probability (ASEP/ABEP), are derived. In addition, we derived the analytical expressions for channel capacities under various adaptation policies such as optimal rate adaptation (ORA), optimal simultaneous power and rate adaptation (OPRA), channel inversion with fixed rate (CIFR), and truncated channel inversion with fixed rate (TCIFR). The proposed mathematical analysis is complemented}, keywords = {Adaptation policies, Average symbol/bit error probability (ASEP/ABEP), Cumulative distribution function, Cumulative distribution function (CDF), Diversity combining (Telecommunications), Equal gain combining (EGC), Fox H-function, Meijer G-function, Moment generating function (MGF), Probability density function, Probability density function (PDF), Radio transmitters \& transmission {\textendash} Fading, Random variables}, issn = {16871472}, url = {http://search.ebscohost.com/login.aspx?direct=true\&db=iih\&AN=120530573\&site=ehost-live}, author = {Bessate, Abdelmajid and El Bouanani, Faissal} } @article { ISI:000390395500004, title = {A very tight approximate results of MRC receivers over independent Weibull fading channels}, journal = {PHYSICAL COMMUNICATION}, volume = {21}, year = {2016}, month = {DEC}, pages = {30-40}, abstract = {In this paper, we study the performance of L-branch maximal-ratio combining (MRC) receivers operating over independent Weibull-fading channels. Our main result is a very tight approximation of the probability density function (PDF) of the signal-to-noise ratio (SNR) at the output of the combiner. Based on this result, accurate approximation of significant performance criteria, such as outage probability and average symbol error rate (ASER) are derived. We also evaluate the average bit error rate (ABER) for several coherent and non-coherent modulation schemes, using a closed-form expression for the moment-generating function (MGF) of the output SNR for MRC receivers. In addition, we derive some analytical expressions for channel capacity under various adaptation policies such as optimal rate adaptation (ORA), Optimal simultaneous power and rate adaptation (OPRA), Channel inversion with fixed rate (CIFR), and Truncated channel inversion with fixed rate (TCIFR). The proposed mathematical analysis is complemented by numerous numerical results, which point out the effects of fading severity on the overall system performance. Computer simulations are also performed to verify the validity and the accuracy of the proposed theoretical approach. (C) 2016 Elsevier B.V. All rights reserved.}, issn = {1874-4907}, doi = {10.1016/j.phycom.2016.09.001}, author = {Bessate, Abdelmajid and El Bouanani, Faissal} } @conference { ISI:000380509200045, title = {Performance Analysis of MRC Diversity in Correlated Weibull Fading Channels}, booktitle = {2015 INTERNATIONAL CONFERENCE ON WIRELESS NETWORKS AND MOBILE COMMUNICATIONS (WINCOM)}, year = {2015}, note = {International conference on wireless networks and mobile communications, Marrakech, MOROCCO, OCT 20-23, 2015}, pages = {267-273}, abstract = {Ascertaining the importance of the Maximal Ratio Combining (MRC) receiver and the suitability of the Weibull model to describe mobile fading channels, we study the performance of this combiner over correlated Weibull Fading Channels (WFC) with arbitrary parameters. We adapt the approximate closed-form expressions of many performance criteria of L-branch MRC derived in {[}1] to the case of correlated channels. Additionally, to reduce the computing complexity of performance criteria, the probability density function (PDF) and the moment generating function (MGF) of the output SNR are written otherwise in terms of simple polynomial and Laguerre generalized function. All the results are evaluated and illustrated by using Mathematica Software, verified and validated by monte-carlo simulation and comparison with previous results {[}2].}, isbn = {978-1-4673-8224-3}, author = {Bessate, Abdelmajid and El Bouanani, Faissal} }