Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"voice call"”.
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Voice Call Capacity Over Wireless Mesh Networks
The goal of this thesis is to understand the voice call carrying capacity of an IEEE 802.11b/e based ad hoc network. We begin with the modelling of conversational speech and define a six state semi-Markov voice model based on ITU-T P59 recommendation. We perform a theoretical analysis of the voice …
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Communication and Trust in Virtual and Face-to-Face Teams
… telepresence robot, or mediated by a voice call. I collected measures of cognitive trust, trust propensity, communication quality, and team effectiveness, and conducted in-depth communication analyses. Results suggest that while virtual teamwork does not result in effectiveness …
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Designing a dynamic spectrum sharing algorithm between DCS and LTE in the 1800 MHz band: a case study of a mobile telecommunication operator in Zimbabwe
… consideration of the impact on 2G metrics like voice call drops, total carried traffic, and receiver (Rx) signal quality. The simulations revealed a substantial surge in LTE throughput, averaging 62% across both clusters, resulting in an overall increase in LTE traffic by 34%, thanks to DSS …
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Smartphone usage and preferences among postpartum HIV-positive women in South Africa
… evidence on short message service (SMS) and/or voice call interventions, smartphone-based interventions have not been a focus of prior research to support the PMTCT continuum of care or maternal lifelong ART. Results are promising for SMS and/or voice call to enhance maternal retention, infant …
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Using decoys to block SPIT in the IMS
… form of spam that has just surfaced is VoIP (Voice over Internet Telephony) spam. Currently, VoIP has seen an increasing numbers of users due to the cheap rates. With the introduction of the IMS (IP Multimedia Subsystem), the number of VoIP users are expected to increase dramatically. This …
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Performance of voice and data transmission using the IEEE 802.11 MAC Protocol
… with Collision Avoidance (CSMA/CA) protocol called the Distributed Coordination Function (DCF). The MAC protocol also includes an optional polling scheme called the Point Coordination Function (PCF) to deliver near-isochronous service to stations. This thesis analyzes the performance of these …
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Assessment of Voice Over IP as a solution for Voice over ADSL
Voice over DSL (VoDSL) is a technology that enables the transport of data and multiple voice calls over a single copper-pair. VoDSL employs packet voice technology instead of the traditional circuit switched voice. Voice over ATM (VoATM) and Voice over IP (VoIP) are the two main alternatives for …
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Network access selection in heterogeneous wireless networks
… can support multiple types of services, such as voice call, file download and video streaming simultaneously on any one of the available radio access technologies (RATs) such as Wireless Local Area Network (WLAN), and Long Term Evolution (LTE). Consequently, a single-homed multi-mode terminal …
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Wireless LAN performance studies in the context of 4G networks
… gaming, will be easily met. The transmission of voice data will just be another IP based service. On the other hand, building such a system is by far not an easy task. The problems in the development of the UMTS system showed the high complexity of wireless systems with support for …
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Ultra Wideband Interference on Third-Generation Wireless Networks
… a practical systemlevel algorithm to realistically simulate the behavior of the UMTS network in the presence of multiple sources of UWB interference. We complete the research by performing UMTS system level simulations under various conditions of UWB interference, with the purpose of assessing …
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Capacity design for multiple quality of protection service classes in optical mesh networks
… failures experiencedthrough 2004. A direct voice-call revenue loss from the failure of a major trunkgroup is frequently quoted at amounting to more than $100,000 per minute. In anothercase reported by the International Cable Protection Committee, a powerful earthquakein Taiwan in December …
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An Integrated Sustainable Business Growth Model for Malaysia’s Telco Industry through the Effect of Multigenerational Workforce Management and Digital Transformation
… and competing with Telco services (SMS, MMS, Voice Call) causing declining of Telco financial performance. With IR4.0, it also forced Telco to speed up digital transformation journey to meet the expectation of customers/subscribers (Digital Apps, Excellence Network, Excellence Customer …
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Texting Versus Talking: Age Sex and Extroversion as Predictors of Frequency and Preference Among an Undergraduate Cohort.
… person sends and (2) preferences for texting or calling. The study also explores the use of cell phones as a means of avoiding others during co-present interaction. Findings reveal that age is the strongest predictor of text messaging, with younger respondents being more likely to text. The study …