User Experience in 4G Networks

2010 ◽  
pp. 125-145
Author(s):  
Pablo Vidales ◽  
Marcel Wältermann ◽  
Blazej Lewcio ◽  
Sebastian Möller
Keyword(s):  
User Experience ◽  
Communication Systems ◽  
Experimental Setup ◽  
User Perception ◽  
Coding Schemes ◽  
4G Networks ◽  
Heterogeneous Technologies ◽  
New Phenomena ◽  
Initial Results

Forthcoming 4G networks will enable users to freely roam across different communication systems. This implies that formerly independent wireless and wired technologies will be integrated to deliver transparent access to a plethora of mobile services and applications. This will also involve changes in the user’s experience mainly derived from (1) mobility across heterogeneous technologies, (2) drastic changes in the underlying link conditions, and (3) continuous adaptation of applications, e.g. flexible coding schemes. This chapter presents a detailed study of these so far unknown phenomena arising in the context of 4G networks. Current instrumental models employed to estimate user perception, such as PESQ (ITU-T Rec. P.862, 2001) for predicting the quality of transmitted speech, were designed to measure conditions that are common in today’s wireless and wired systems. However, it is expected that new conditions encountered in 4G networks are not going to be accurately handled by today’s models. Thus, they need to be adjusted, or new models should be proposed in order to predict the perceptual influence of new phenomena such as the three aspects aforementioned. The authors undertook this task and designed a novel methodology and experimental setup to measure user perception in future 4G networks. Moreover, the authors carried out an extensive set of subjective tests to accurately quantify user perception and derive conclusions for optimal user experience in 4G networks. These processes and initial results are included in this chapter.

QoE-Driven Efficient Resource Utilisation for Video Over Critical Communication Systems

2017 ◽  
pp. 168-187
Author(s):  
Emad Abdullah Danish ◽  
Mazin I. Alshamrani
Keyword(s):  
Communication Systems ◽  
Video Transmission ◽  
Video Quality ◽  
3D Video ◽  
Resource Utilisation ◽  
Network Resource ◽  
Considerable Saving ◽  
Coding Schemes ◽  
Efficient Resource

Research in network resource utilisation introduced several techniques for more efficient power and bandwidth consumption. The majority of these techniques, however, were based on Quality of Service (QoS) and network parameters. Therefore, in this study a different approach is taken to investigate the possibility of a more efficient resource utilisation if resources are distributed based on users' Quality of Experience (QoE), in the context of 3D video transmission over WiMAX access networks. In particular, this study suggests a QoE-driven technique to identify the operational regions (bounds) for Modulation and Coding Schemes (MCS). A mobile 3D video transmission is simulated, through which the correlation between receiver's Signal-to-Noise Ratio (SNR) and perceived video quality is identified. The main conclusions drawn from the study demonstrate that a considerable saving in signal power and bandwidth can be achieved in comparison to QoS-based techniques.

Introduction to Games User Research

2018 ◽  
Author(s):  
Anders Drachen ◽  
Pejman Mirza-Babaei ◽  
Lennart E. Nacke
Keyword(s):  
User Experience ◽  
Video Game ◽  
Digital Games ◽  
Comprehensive Overview ◽  
User Research ◽  
Interdisciplinary Field ◽  
Present Book ◽  
Optimal Quality ◽  
Experienced User

This chapter provides an introduction to the field of Games User Research (GUR) and to the present book. GUR is an interdisciplinary field of practice and research concerned with ensuring the optimal quality of usability and user experience in digital games. GUR inevitably involves any aspect of a video game that players interface with, directly or indirectly. This book aims to provide the foundational, accessible, go-to resource for people interested in GUR. It is a community-driven effort—it is written by passionate professionals and researchers in the GUR community as a handbook and guide for everyone interested in user research and games. We aim to provide the most comprehensive overview from an applied perspective, for a person new to GUR, but which is also useful for experienced user researchers.

Improving quality of life for dialysis patients through telecare

2000 ◽  
Vol 6 (1_suppl) ◽  
pp. 80-83 ◽  
Author(s):  
Karl A Stroetmann ◽  
Peter Gruetzmacher ◽  
Veli N Stroetmann
Keyword(s):  
Quality Of Life ◽  
Low Cost ◽  
Video Communication ◽  
Daily Routine ◽  
Dialysis Patients ◽  
Home Dialysis ◽  
Service Support ◽  
Initial Results ◽  
Selection Of

Home dialysis can improve the care and quality of life for patients with renal failure. We have explored the possibility of extending home care to more patients needing continuous ambulatory peritoneal dialysis (CAPD) using telemedicine. We tested videoconferencing support for five CAPD patients using low-cost ISDN equipment (128 kbit/s). Initial results indicated that it was possible to integrate video-communication into the daily routine of the clinic and the response from patients was surprisingly positive. Selection of appropriate, affordable technology and the ISDN service support by the telecommunications provider proved to be considerably more difficult than anticipated. The first indications also suggest medical advantages for home teledialysis.

The quality of user experiences for mobile recommendation systems: an end-user perspective

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Woon Kian Chong ◽  
Zhuang Ma
Keyword(s):  
Social Norms ◽  
User Experience ◽  
Online Survey ◽  
Recommendation Systems ◽  
User Involvement ◽  
Sample Population ◽  
User Experiences ◽  
Content Type ◽  
Involvement Theory

PurposeThis paper attempts to identify key factors (i.e., personalization, privacy awareness and social norms) that affect user experiences (UXs) of mobile recommendation systems according to the user involvement theory (push-based and pull-based) and their relationships.Design/methodology/approachThe study is based on an online survey with students from an international business school located in southwestern China. The sample population for the study included randomly selected 600 university students who are active mobile phone users. A total of 470 questionnaires were returned; 456 were valid (14 were invalid due to the incompleteness of their responses), providing a response rate of 65%.FindingsSocial norms have the largest impact on user experience quality, followed by personalization and privacy awareness. User involvement in mobile recommendation systems has mediating effects on the above relationships, with larger effects on pull-based systems than on push-based systems.Originality/valueThis study provides an integrated framework for researchers to measure the effects of social, personal and risk factors on the quality of user experience. The results enrich the literature on user involvement, mobile recommendation systems and UX. The findings provide significant implications for both retailers and developers of mobile recommendation systems.

Persepsi Kreditur dan PPAT Terhadap Kualitas Layanan Hak Tanggungan Terintegrasi Secara Elektronik

Tunas Agraria ◽  
2020 ◽  
Vol 3 (3) ◽  
Author(s):  
I Made Dwi Gunarta ◽  
Akur Nurasa ◽  
Sukmo Pinuji
Keyword(s):  
Service Quality ◽  
User Satisfaction ◽  
Service User ◽  
Service Users ◽  
User Perception ◽  
Excellent Service ◽  
Efficiency And Effectiveness ◽  
Citizen Support

The success of the Badung Regency Land Office in issuing HT-el Certificate, the first in Indonesia cannot be separated from the support of the Creditors and PPAT as the main users of HT-el Services. This innovation is an effort to realize the digitalization of services and overcome various existing weaknesses. Creditors and PPAT as the main users are important instruments in providing an overview of HT-el service quality, because basically the success of an organization in providing a service depends on how well the perception of service users will reflect the level of user satisfaction and the profitability of the organization. HT-el Service User Perception (Creditor and PPAT) assessed using the e- Govqual Method illustrates that the Quality of HT-el Services at the Badung District Land Office is very good, this is evidenced by positive responses to the Efficiency, Trust and Realibility as well as Citizen Support. This is an effort to create excellent service in the land sector based on the principles of efficiency and effectiveness in implementing activities.

scholarly journals A Hybrid Approach to Call Admission Control in 5G Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammed Al-Maitah ◽  
Olena O. Semenova ◽  
Andriy O. Semenov ◽  
Pavel I. Kulakov ◽  
Volodymyr Yu. Kucheruk
Keyword(s):  
Artificial Intelligence ◽  
Quality Of Service ◽  
Admission Control ◽  
Mobile Communications ◽  
Communication Systems ◽  
Call Admission Control ◽  
Hybrid Approach ◽  
5G Networks ◽  
Call Admission

Artificial intelligence is employed for solving complex scientific, technical, and practical problems. Such artificial intelligence techniques as neural networks, fuzzy systems, and genetic and evolutionary algorithms are widely used for communication systems management, optimization, and prediction. Artificial intelligence approach provides optimized results in a challenging task of call admission control, handover, routing, and traffic prediction in cellular networks. 5G mobile communications are designed as heterogeneous networks, whose important requirement is accommodating great numbers of users and the quality of service satisfaction. Call admission control plays a significant role in providing the desired quality of service. An effective call admission control algorithm is needed for optimizing the cellular network system. Many call admission control schemes have been proposed. The paper proposes a methodology for developing a genetic neurofuzzy controller for call admission in 5G networks. Performance of the proposed admission control is evaluated through computer simulation.

scholarly journals Mixed or Complementary Messages: Making the Most of Unexpected Assessment Results

2016 ◽  
Vol 77 (2) ◽  
pp. 197-211 ◽  
Author(s):  
Phil Jones ◽  
Julia Bauder ◽  
Kevin Engel
Keyword(s):  
Mixed Methods ◽  
Action Research ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Important Research ◽  
Action Research Project ◽  
Research Project ◽  
Research Literacy ◽  
Initial Results

Grinnell College participated in ACRL’s first cohort of Assessment in Action (AiA), undertaking a mixed-methods action research project to assess the effectiveness of librarian-led research literacy sessions in improving students’ research skills. The quantitative data showed that the quality of students’ sources did not markedly improve following a research literacy session, while the qualitative data indicated that many students were able to state and describe important research concepts they learned. This article profiles the development of Grinnell’s AiA project and discusses how Grinnell’s librarians responded when the initial results led to more questions rather than to satisfactory answers.

Interaction of Speech Coders and Atypical Speech II

2002 ◽  
Vol 45 (4) ◽  
pp. 689-699 ◽  
Author(s):  
Donald G. Jamieson ◽  
Vijay Parsa ◽  
Moneca C. Price ◽  
James Till
Keyword(s):  
Communication Systems ◽  
Speech Rate ◽  
Voice Quality ◽  
Voice Disorders ◽  
Normal Hearing ◽  
Speech Quality ◽  
Degraded Speech ◽  
Before And After ◽  
Subband Processing

We investigated how standard speech coders, currently used in modern communication systems, affect the quality of the speech of persons who have common speech and voice disorders. Three standardized speech coders (GSM 6.10 RPELTP, FS1016 CELP, and FS1015 LPC) and two speech coders based on subband processing were evaluated for their performance. Coder effects were assessed by measuring the quality of speech samples both before and after processing by the speech coders. Speech quality was rated by 10 listeners with normal hearing on 28 different scales representing pitch and loudness changes, speech rate, laryngeal and resonatory dysfunction, and coder-induced distortions. Results showed that (a) nine scale items were consistently and reliably rated by the listeners; (b) all coders degraded speech quality on these nine scales, with the GSM and CELP coders providing the better quality speech; and (c) interactions between coders and individual voices did occur on several voice quality scales.

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