​You are cordially invited by the COE dept., to attend a MS thesis defence, on the above given title, by Mr. Abdullah Hasan Rashed, COE-RA, on Tuesday, 18th December, 2012, at  12:00 noon, in Building 24, Room 104.​

Abstract: Characterizing the distribution of the sum of lognormal random variables (RVs) is still an open issue; it appears in a variety of fields and has been the target objective of many papers. In wireless communications it arises in analyzing the total power received from several interfering sources. Recent advances in this field allow for the efficient computations of the distribution of a low number of individual RV components or for low value of the decibel spread corresponding to the individual RV. This work attempts to explore methods that are more efficient and easier in evaluating the distribution function for the sum of lognormal RVs. Previous research works in the area of wireless code-division-multiple-access (CDMA) data networks have shown that the cell-site traffic power can be modeled as the sum of RVs that are very similar to lognormal RVs. This work also aims to apply the developed computation to the problem of characterizing the cell-site power for CDMA system.

Dr. Ashraf Mahmoud, Associate Professor, COE Dept., is his thesis advisor.​