<p>Abstract</p><p>Title: “My social extension” – Twelve girls on the relationship with the mobile phone (“Min sociala</p><p>anknytning” – Tolv tjejer om relationen till mobiltelefonen)</p><p>Number of pages: 42 (43 including enclosure)</p><p>Author: Mattias Köhlmark</p><p>Tutor: Göran Svensson</p><p>Course: Media and Communication Studies D</p><p>Period: Spring semester 2006</p><p>University: Division of Media and Communication, Department of Information Science,</p><p>Uppsala University.</p><p>Purpose/Aim: To investigate the emotional aspect of mobile phones and the source of those</p><p>emotions.</p><p>Material/Method: The data presented stems from three unstructured focus groups with participants</p><p>at the age of 16-19 years.</p><p>Main results: The key findings largely supports Vincents theories that the emotional language</p><p>guided towards mobile phones comes from the friends it allows us connect with. Also emancipation</p><p>can be seen as a driving force behind these emotions.</p><p>Keywords: mobile phone, mobility, absent present others, emancipation, cell phone, emotion,</p><p>emotional language,</p>

This thesis studies cooperative techniques that rely on femtocell user diversity to improve the downlink communication quality of macrocell users. We analytically analyze and evaluate the achievable performance of these techniques in the downlink of Rayleigh fading channels. We provide an approximation of both the bit-error rate (BER) and the data throughput that macrocell users receive with femtocell user cooperation. Using simulations, we show that under reasonable SNR values, cooperative schemes enhance the performances of macrocells by improving the BER, outage probability, and data throughput of macrocell users significantly when compared with the traditional, non-cooperative schemes. / Graduation date: 2012

Thesis (M.S.)--Rochester Institute of Technology, 2007. / Typescript. Includes bibliographical references.

Purpose/Aim: In the information and communication technology society (ICT) we live in today it is easy to feel that we are constantly expected to be available. The daily contact with the Internet and the use of cell phones has changed our way to communicate. With this in mind in combination with the increased stress among young adults my aim is to investigate how young adults, aged 23-26 years, experience to be constantly connected and available through the Internet and the cell phone. What are their opinions, attitudes and feelings about what this entails in their lives? Material/Method: The essay is based on four focus group interviews with sixteen students from Uppsala University aged 23-26, two groups consisting of women and two groups consisting of men. The ICT &amp; Internet research is developing rapidly which led me to do an exploratory study that is hypothesis-generating and which I hope can be used for forthcoming research of the consequences of the ICT society. The empiric result has been analyzed from a behavioural science perspective. Main results: The results have been interesting from several perspectives. The focus groups seem to think that the Internet and cell phone use is the best thing that has happened. They are so-called "Multitaskers" and have no problems to do several things simultaneously. The relationship between ICT and stress becomes slightly more noticeable among the girls. I dare to say that the constant availability do result in a certain stress, which I based on the clear statements about stress that came up between the lines. The focus groups are highly dependent on both their cell phone and access to Internet. They have also developed new cell phone behaviours that are customized to different situations and people.

Abstract Title: “My social extension” – Twelve girls on the relationship with the mobile phone (“Min sociala anknytning” – Tolv tjejer om relationen till mobiltelefonen) Number of pages: 42 (43 including enclosure) Author: Mattias Köhlmark Tutor: Göran Svensson Course: Media and Communication Studies D Period: Spring semester 2006 University: Division of Media and Communication, Department of Information Science, Uppsala University. Purpose/Aim: To investigate the emotional aspect of mobile phones and the source of those emotions. Material/Method: The data presented stems from three unstructured focus groups with participants at the age of 16-19 years. Main results: The key findings largely supports Vincents theories that the emotional language guided towards mobile phones comes from the friends it allows us connect with. Also emancipation can be seen as a driving force behind these emotions. Keywords: mobile phone, mobility, absent present others, emancipation, cell phone, emotion, emotional language,

No description available.

M. Tech. Business Administration / In April 2014, ICASA, South Africa's communications regulator, reduced mobile termination rates (i.e. tariffs mobile service providers can charge for terminating calls on each other's networks) from 40 cents to 20 cents per minute. Furthermore, mobile number portability has enhanced mobility of subscribers across networks. Mobile number portability means that subscribers can switch mobile network service providers without changing their mobile number despite it being issued by the network they are leaving. The price war amongst service providers means that all mobile network operators offer mobile voice calls and access to mobile data at comparable rates. There is now little differentiation between mobile network service providers, and mobile network service providers have to seek other sources of sustainable competitive advantage. It is against this background that the purpose of this research is to measure South African mobile phone consumers' perceptions and expectations of the service provided by mobile network service providers.

Performance analysis in cellular networks is the determination of customer orientated grade-of-service parameters, such as call blocking and dropping probabilities, using the methods of stochastic theory. This stochastic theory analysis is built on certain assumptions regarding the arrival and service processes of user-offered calls in a network. In the past, cellular networks were analysed using the classical assumptions, Poisson call arrivals and negative exponential channel holding times, borrowed from earlier fixed network analysis. However, cellular networks are markedly different from fixed networks, in that, they afford the user a unique opportunity: the ability to communicate while on the move. User mobility and various other cellular network characteristics, such as customer-billing, cell· layout and hand·off mechanisms, generally invalidate the use of Poisson arrivals and negative exponential holding times. Recent measurements on live networks substantiate this view. Consequently, over the past few years, there has been a noticeable shift towards using more generalised arrival and service distributions in the performance analysis of cellular networks. However, two shortcomings with the resulting models are that they suffer from state space explosion and / or they represent hand off traffic as a state dependent mean arrival rate (thus ignoring the higher moments of the hand-off arrival process). This thesis's contribution to cellular network analysis is a moment-based approach that avoids full state space description but ensures that the hand-off arrival process is modelled beyond the first moment. The thesis considers a performance analysis model that is based on Poisson new call arrivals, generalised hand-off call arrivals and a variety of channel holding times. The thesis shows that the performance analysis of a cellular network may be loosely decomposed into three parts, a generic cell traffic characterising model, a generic cell traffic blocking model and a quality of service evaluation model. The cell traffic characterising model is employed to determine the mean and variance of hand-off traffic offered by a cell to its neighbour. The cell traffic-blocking model is used to detennine the blocking experienced by the various traffic streams offered to each cell. The quality of service evaluation part is essentially afued-point iteration of the cell traffic characterising and cell traffic blocking parts to determine customer orientated grade-of-service parameters such as blocking and dropping probabilities. The thesis also presents detailed mathematical models for user mobility modelling. Finally, the thesis provides extensive results to validate the proposed analysis and to illustrate the accuracy of the proposed analysis when compared to existing methods. / Thesis (Ph.D.)-University of Natal, Durban, 2000.

Third generation cellular communication systems based on CDMA techniques have shown great scope for improvement in system capacity. Over the last decade, there has been significant interest in DS-CDMA detectors. The conventional detector, the optimal detector and a number of sub-optimal multi-user detectors (MUD) have been extensively analyzed in the literature. Recently, the reduction of power consumption in DS-CDMA systems has also become another important consideration in both system design and in implementation. In order to support wireless multimedia services, all CDMA-based systems for third generation systems have a large bandwidth and a high data rate, therefore the power consumed by the digital signal processor (DSP) is high. This thesis focuses on power consumption in the adaptive Minimum Mean Square Error (MMSE) detector which is based on the Least Mean Square (LMS) algorithm. This thesis presents a literature survey on MUD and adaptive filter algorithms. A system model of the quantized LMS-MMSE MUD is proposed and its performance is analyzed. The quantization effects in the finite precision LMS-MMSE adaptive MUD including the steady-state weight covariance, mean square error (MSE) and bit error rate (BER) versus wordlength of data and coefficient are investigated when both the data and filter coefficients are quantized. The effects of wordlength size on power consumption are investigated and the tradeoff between the power consumption and performance degradation and the optimal allocation of bits to data and to LMS coefficients under power constraint is presented. / Thesis (M.Sc.Eng.)-University of Natal, Durban, 2003.

In today's globalised market, quality and productivity are essential for the survival and growth of any organisation. For service companies, the encounters between customers and company employees are a critical component of this service quality. These factors depend on the successful attraction and retention of customers. The customer has therefore become the focus for any successful business. Business success depends on organisat ions understanding and meeting customers ' expectations and demands. This study measures the dimensions of service encounters as perceived by customers of Vodacom Lesotho. The current level of service encounter quality and satisfact ion is measured for Vodacom Lesotho customers who use the company's contact centres (popularly known as Vodashops). The study reveals that customers are very keen to be involved in service improvement programs . Empirical testing identified that although the quality of network coverage is not part of the service encounter, it is very important in the customer satisfaction with the service encounter . This study has developed the following recommendations that will ensure the improvement of service encounters at Vodacom Lesotho: • Vodacom Lesotho needs to involve customers in their service design processes . • Front-line employees should be hired on their abilities to perform customer service encounters and they should continuously receive relevant training . • Customers need to be educated about the services offered by Vodacom Lesotho. The results of this study have supported the objectives of this study and it can be concluded that Vodacom Lesotho needs to improve service quality to ensure customer satisfaction . / Thesis (MBA)-University of Natal, 2003.