Abstract The third generation networks like Universal Mobile Telecommunication Systems (UMTS) offers multimedia applications and services that meet end-to-end quality of service requirements. The load factor in the uplink is critical and it is one of the important parameters which has a direct impact on the resource management as well as on the cell performance. However, in this paper, the fractional load factor in the uplink and the total downlink power are derived taken into account the multi-path propagation in different environments. The analysis is based on changing new parameters that affect the Quality of Service (QoS) as well as the performance, such as: service activity factor, energy-to-noise ratio (Eb/N0), interference factor, and the non-orthogonality factor of the codes. The impact of these parameters on the performance and the capacity as well as the total throughput of the cell is also investigated. It is shown in this paper that in addition to the above parameters, the type of the environment has a major effect on the noise rise in the uplink as well as the total power in the downlink. The investigation is based on different types of services, i.e., voice (conversational: 12.2kbit/s), packet switched services with rates (streaming 64 and 128kbit/s) and (interactive 384kbit/s). Additionally, the obtained results in this paper are compared with some similar results in the literature.

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[24] Zreikat A., Al-Begain K., and Smith K., Comparative Capacity/Coverage Analysis of CDMA Cell in Different Propagation Environments, Wireless Personal Communications, vol. 28, no. 3, pp. 205-231, 2004. QoS-Based Performance and Resource Management in 3G Wireless Networks 9 Aymen Issa Zreikat is an Associate Professor at the Information Technology Department, Mu tah University, Jordan. He has obtained his BSc in computer science from Yarmouk University, Jordan in 1990 and MSc in computational engineering from University of Erlangen, Germany in 2000. Additionally, he has obtained his PhD from Bradford University, UK in 2003. In January, 2001, he has joint the performance modelling and engineering research group at the Computing Department of Bradford University, UK. His area of research is in the performance evaluation and resource management of 3G wireless mobile networks and beyond. He has more than 35 international refereed journal and conference papers in this field and he is responsible for reviewing a set of papers in this area of research in a very reputable Journals. He has published two important books in LAMBERT publisher. He is a member of some national coordinating committees; (such as the coordinating committee for the management of Queen Rania Al-Abdullah center for Educational Technology, also Committee for Higher Education Accreditation Commission, and International Organizations. He has been appointed as an assistant professor at the Information Technology Department, Mutah University, Jordan. In 2009, he has been promoted to associate professor in the same University. He has been appointed as an assistant dean at the Faculty of Science. Recently, he has been appointed as the chairman of the Information Technology, Mu tah University.