Driven by surging demands for high data rate services and better user experiences, there is an increasing capacity demand in heterogeneous cellular networks. As one of the promising solutions for capacity enhancement, densely deployed small cells are proposed to provide a huge capacity gain and improve the user experience with high data rate services. However, the inter-cell interference among ...

............................................................................................................................................I LIST OF PAPERS................................................................................................................................. II ACKNOWLEDGEMENTS...............................................................................................

Discrete EVent System specification (DEVS) supports object oriented modeling and simulation environments. DEVS is a sound mathematical formalism for representing complex dynamic systems such as cellular space models. This paper presents a new cellular DEVS environment that employs multilayer modeling technique in order to improve model development and testing processes. In addition, it assures ...

The time between transmitting symbols (the inter-symbol delay) governs the speed at which the link operates. The shorter the inter-symbol delay, the faster the link operates. However, if the inter-symbol delay is too short, then symbols may not arrive at the receiver intact, or in-order. If two symbols are transmitted on the same wire in quick succession, then the resulting pulse may be too sho...

The inter-human communication is a continuous process: a person receives, decodes and interprets messages (according to his/her own semantics) and encodes information in his/her answers. In 1954, Schramm and Osgood defined the circular communication model, according to which feedback is the most important. Communication is described as a continuous process consisting in messages sending and rec...

Within the realm of globalization of R&D, offshoring is a relatively recent and still emerging phenomenon. Rooted in the notion of comparative advantage, offshoring of R&D involves disaggregation and global distribution of the firm’s R&D value chain activities to leverage innovation capacity of low-cost countries. Characteristically different from marketand technology-seeking globalization of R...

We consider the problem of realizing several common communication structures in the all-optical Partitioned Optical Passive Stars (POPS) topology. We show that, often, the obvious or “natural” method of implementing a communication pattern in the POPS does not efficiently utilize its communication capabilities. We present techniques which distribute the communication load uniformly in the POPS ...

In this paper, we build an evaluation tool for assessing the business impacts of an electronic order-topayment cycle. Based on a literature review and expert interviews, we formulate a three-stage model which includes performance indicators for electronic order, electronic invoice, and electronic payment processes. In addition, we pinpoint the inter-process linkages. We test the proposed evalua...

This qualitative organizational ethnography aimed to determine the common issues or concerns in a state university. Respondents were chosen through convenience sampling. A researcher-made survey form was made and of State University. The gathered data coded analyzed content analysis. Results showed that communication employee individual differences most encountered by researchers concluded thes...