yusuke1997/dblp-id-title huggingface dataset:
A QoS Provisioning Mechanism of Real-Time Wireless USB Transfers for Smart HDTV Multimedia Services
Rectangular Patch Antenna for Dual-Band RFID and WLAN Applications
Optimized NOMA System Using Hybrid Coding and Deep Learning-Based Channel Estimation
Efficient Malicious Packet Capture Through Advanced DNS Sinkhole
Performance Evaluation of SAC-OCDMA System in Free Space Optics and Optical Fiber System Based on Different Types of Codes
Threshold Power Based UE Admittance and Contention Free Resource Allocation for Interference Mitigation in Cognitive Femtocells
Trust-Based Intrusion Detection and Clustering Approach for Wireless Body Area Networks
Space-Time Cooperation Diversity Using High-Rate Codes
Correction to: Base Station Sleep and Spectrum Allocation in Heterogeneous Ultra-Dense Networks
Secure Distance Based Improved Leach Routing to Prevent Puea in Cognitive Radio Network
Performance Evaluation of FSO and MMW for the Uruguayan Weather Conditions
Wireless Powered mmWave Cooperative Communication Network
IC-MADS: IoT Enabled Cross Layer Man-in-Middle Attack Detection System for Smart Healthcare Application
Mitigating Packet Drop and Energy Consumption in Wireless Sensor Networks Using Network Level Optimized Relay Election Protocol
Distinguish Crude and Sweated Chinese Herbal Medicine with Support Vector Machine and Random Forest Methods
Energy Detector in Ultra Wideband Systems Using Phase Compensation Technique
MGFs for Rayleigh Random Variables
Detection of epileptical seizures based on alpha band statistical features
Transmit Diversity Schemes for WCDMA
Microcell Automatic Propagation Measuring System and Service-Area Evaluation
Virtual Machine Allocation Using Optimal Resource Management Approach
The Vulnerability Exploitation Conveying Digital Data Over Mobile Voice Call Channels
Design and Evaluation of a New Scheme Based on Secret Sharing Mechanisms that Increases the Security of Conditional Access Systems in Satellite Pay-TV
DOA Estimation Based on Second-Order Difference Co-Array for Coprime Arrays
Multi-layer Resources Fair Allocation in Big Data with Heterogeneous Demands
Asymmetric Fission Transmission of Linear-to-Circular Polarization Converter Using Bi-layer Split Ring Structure
Frame Structures for Massive MIMO Communications Under Channel Aging
Dynamic Coverage Optimization for 5G Ultra-dense Cellular Networks Based on Their User Densities
RETRACTED ARTICLE: IoT based Prudent Automatic Falls Detection for Elders by Analyzing Carrier State Information (CSI) Employing Wi-Fi Devices
A User-Centric Approach for Personalized Service Provisioning in Pervasive Environments
Recent Developments in Spatio-Temporal EEG Source Reconstruction Techniques
Dual-Band WLAN MIMO Antennas
Uplink Channel Sounding in TDD-OFDM Cellular Systems
Spectrum Sensing with Energy Harvesting for Nakagami fading channels
Design of a Compact Wideband Two-Port MIMO Antenna for NR 5G Sub-6 GHz Band Wireless Applications
Spreading Codes Generator for Wireless CDMA Networks
New Phase Adjustment and Channel Estimation Methods for RF Combining Applicable in Mobile Terminals
Optimized Resource Allocation in IoT Using Fuzzy Logic and Bio-Inspired Algorithms
A Novel Standard Strip and Scaling Technique for Transferring Taste
Performance Analysis for Two-Way Relaying Networks with and Without Relay Selection
An Improved Dual Hybrid Algorithm for Efficient Resource Utilization in mm-Communication Using ABC-Firefly and Levenberg's Algorithm
The Fractal Characteristics of Signals in IR-UWB Communication System
5G: The Convergence of Wireless Communications
Implementation Issues in Turbo Decoding for 3GPP FDD Receiver
Epidemic Models of Malicious-Code Propagation and Control in Wireless Sensor Networks: An Indepth Review
Selection of the Number of Used Subcarriers for OFDM Systems in Interference-limited Environments
Threshold Effects of Capital Account Liberalization on Productivity: Bootstrap Method in Non-dynamic Panels
Auction-Based Bandwidth Allocation in Multi-Hop Wireless Ad Hoc Networks
Modeling of an Efficient Integration of MANET and Internet Using Queuing Theory
Establishing Secure Routing Path Using Trust to Enhance Security in MANET
The Signal Processing and Identification of Upper Limb Motion Based on sEMG
A Low-Profile Pattern and Polarization Diversity Dual-Band MIMO Antenna with Full Azimuth Coverage for Indoor Access Points
An Investigation of Link Quality Assessment for Mobile Multi-hop and Multi-rate Wireless Networks
Deployment Based Attack Resistant Key Distribution with Non Overlapping Key Pools in WSN
On the Capacity of Cluster-Based Cooperative MIMO Cellular System with Universal or Fractional Frequency Reuse
Energy-Aware Healthcare System for Wireless Body Region Networks in IoT Environment Using the Whale Optimization Algorithm
Spectrally Efficient RS-MS Selection with Limited Feedback Over Multiuser Cooperative Networks
Transmission Efficient Channel Estimation for OFDM System Under Multi-path Fast Fading Channel
Efficient Multicast Congestion Control
Hemispherical Coverage Array Antenna and Performance Analysis
An Improved Chaotic Cryptosystem for Image Encryption and Digital Watermarking
Performance Comparison of FA, PSO and CS application in SINR Optimisation for LCMV Beamforming Technique
STEP: A Concomitant Protocol for Real Time Applications
Energy Beamforming for Full-Duplex Wireless Powered Cooperative Communications
Construction of (2k, k, 2) Convolutional Codes with Double-Loop Cyclic Codes
ECG-Signal Based Secret Key Generation (ESKG) Scheme for WBAN and Hardware Implementation
A Philosophy of Security Architecture Design
An Efficient RFID Authentication Scheme Based on Elliptic Curve Cryptography for Internet of Things
Cross Layer Considerations for an Adaptive OFDM-Based Wireless Communication System
Packet Error Rate Distribution Between Random Bluetooth Piconet Pairs
Sensor Function Virtualization to Support Distributed Intelligence in the Internet of Things
Selecting the Optimal Fractional Frequency Reuse Scheme in Long Term Evolution Networks
Survey on Ultra-Dense Networks (UDNs) and Applied Stochastic Geometry
An Authentication and Key Agreement Mechanism for Multi-domain Wireless Networks Using Certificateless Public-Key Cryptography
Signal to Interference Ratio Based Antenna Selection for Spatial Multiplexing
Taylor-Based Least Square Estimation in MIMO-OFDM Systems for Multimedia Applications
Antenna and User Subset Selection in Downlink Multiuser Orthogonal Space-Division Multiplexing
HGRP: Optimal Neighborhood Discovery in IOT Applications
Optimum Object Selection Made Easy
An Intelligent Semanticification Rules Enabled User-Specific Healthcare Framework Using IoT and Deep Learning Techniques
Bit-Clusters Trellis Search Based Iterative MIMO Detection Algorithm
Analyzing and Optimizing Cooperative Communication for in Vivo WBAN
Integrated Sized-Based Buffer Management Policy for Resource-Constrained Delay Tolerant Network
RPSF: A Routing Protocol with Selective Forwarding for Mobile Ad-Hoc Networks
On the Throughput Capacity of Cooperative Multi-hop Wireless Ad hoc Networks with Multi-flow
IBRE-LEACH: Improving the Performance of the BRE-LEACH for Wireless Sensor Networks
Efficiency of Paid Authentication Methods for Mobile Devices
Performance Analysis and FPGA Prototype of Variable Rate GO-OFDMA Baseband Transmission Scheme
Optimizing Power Consumption in Different Climate Zones Through Smart Energy Management: A Smart Grid Approach
Secure and Privacy-Preserving RFID Authentication Scheme for Internet of Things Applications
Editorial: Special Issue on "Future Convergence of Wired and Wireless Networks" (Selected Topics from the Strategic Workshop 2005)
Study on Cognitive Opportunistic Relaying with the Interference from Primary User over Nakagami-m Fading Channels
RCM: A User Friendly Router Configuration Machine
Traffic Aggregation Based RSA (TARSA) for Time Varying Sub-Wavelength Connections in Elastic Optical Networks
Scalable Profit Optimized Incentive Mechanism for Resources in Cloudlet Based Mobile Edge Computing Framework
A Robust Energy Aware Power Control Algorithm with SINR-Flexible Requirement in Cognitive Radio Networks
Performance of Frequency-Time MMSE Equalizer for MC-CDMA over Multipath Fading Channel
A Risk-Aware Reputation-Based Trust Management in Wireless Sensor Networks
An Eight-Element Frequency Reconfigurable MIMO Slot Antenna with Multi-band Tuning Characteristics
Multi-hop Multi-band Intelligent Relay-Based Architecture for LTE-Advanced Multi-hop Wireless Cellular Networks
Dynamic Feedback Power Control for Cooperative Vehicle Safety Systems
Performance Evaluation of Different Optimization Techniques for Coverage and Connectivity Control in Backbone Based Wireless Networks
Five-Band Millimeter-Wave Antenna of Circular/Linear Polarization for Forthcoming Generations of Mobile Handsets
Live Detection of Face Using Machine Learning with Multi-feature Method
Energy Efficient Intra Cluster Gateway Optimal Placement in Wireless Sensor Network
Efficient AP Placement Through Power Control and Partially Overlapping Channel Assignment
A Virtual MAC Address Scheme for Mobile Ethernet
Non-Intrusive Online Quality of Experience Assessment for Voice Communications
Sentiment Analysis for Personalized Chatbots in E-Commerce Applications
Power-efficient M-ary PSSK Communications with Uncertain Phase Errors
New CRLH-Based Planar Slotted Antennas with Helical Inductors for Wireless Communication Systems, RF-Circuits and Microwave Devices at UHF-SHF Bands
A Novel Genetic Algorithm for Adaptive Resource Allocation in MIMO-OFDM Systems with Proportional Rate Constraint
An Innovative Cooperative Spectrum Sensing Algorithm with Non-ideal Feedback Channels and Delay Considerations
IoT for Health Monitoring System Based on Machine Learning Algorithm
Burst Contention Resolution Using Fiber Delay Management in WDM Optical Networks
Raised Cosine-Like Companding Scheme for Peak-to-Average Power Ratio Reduction of SCFDMA Signals
Erratum to: Optimal Channel Sensing Order for Various Applications in Cognitive Radio Networks
Correction to: Opposition Based Joint Grey Wolf‑Whale Optimization Algorithm Based Attribute Based Encryption in Secure Wireless Communication
A Multi-mode OFDM System with Coded Direct Index Modulation (MM-OFDM-CDIM)
An Adaptive Combiner Model for Multi-Rate Relaying Transmissions in Cognitive Systems
Prediction Based QoS Management in Replicated DRTDBS
Correction to: Deep Learning Method of Facial Expression Recognition Based on Gabor Filter Bank Combined with PCNN
Addressing Service Quality Challenges in the Cloud and IoT Integration: A Case Study of Tourist Remote Healthcare System
User-Centric Offloading to WLAN in WLAN/3G Vehicular Networks
Multicarrier Systems Over Underwater Acoustic Channels: A Performance Evaluation
3D Tracking and Classification System Using a Monocular Camera
A Distributed Neighbourhood DBSCAN Algorithm for Effective Data Clustering in Wireless Sensor Networks
Outage Probability Analysis in Dual-Hop Vehicular Networks with the Assistance of Multiple Access Points and Vehicle Nodes
A Sleep Scheduling Target Tracking Research for Sensor Networks
LTE Quality of Service Enhancement Under OFDM Modulation Techniques
MSVR Based Range-Free Localization Technique for 3-D Sensor Networks
An Investigation of Security Trends in Personal Wireless Networks
A Channel Prediction Scheme with Channel Matrix Doubling and Temporal-Spatial Smoothing
An Efficient Secure Authentication and Key Establishment Scheme for M2M Communication in 6LoWPAN in Unattended Scenarios
On-Demand Utility-Based Power Control Routing for Energy-Aware Optimization in Mobile Ad Hoc Networks
Maximal Ratio Combining (MRC) in Shadowed Fading Channels in Presence of Shadowed Fading Cochannel Interference (CCI)
Fingerprinting Positioning in Distributed Massive MIMO Systems Using Affinity Propagation Clustering and Gaussian Process Regression
Connection Provisioning for PCE-Based GMPLS Optical Networks
Low Complexity Shalvi-Weinstein Algorithm
Enhancing the Presence Service Efficiency of Internet Protocol Multimedia Subsystem-Based Web Services
A Non-orthogonal Multiple Access and Interference Mitigation Combined Strategy in Multi-user Networks
Cooperative Transmission Using Quasi-Orthogonal Space-Time Block Codes with Adaptive Decode-and-Forward Relaying Protocol
Context Monitoring Optimization in Autonomic Networks
Convergence of Broadcast and New Telecom Networks
FdICIC: Inter-cell Interference Coordination for Full-Duplex Cellular Systems
A Novel Routing Algorithm with Bernoulli Sampling-based Link Quality Estimation in Wireless Sensor Networks
Outage Performance and Diversity Analysis of Cognitive Triple-Hop Cluster-Based Networks Under Interference Constraint
BST Varactor Loaded Frequency Agile Stacked Circular Microstrip Radiator
Development of a High Sensitive Refractive Index Sensor Based on Evanescent Wave Absorbance effect in Reflective Mode for Ocean Observation
Partition Identification and Redeployment Algorithm Through Neighbourhood Information
Media Independent Handover-based Competitive On-Line CAC for Seamless Mobile Wireless Networks
Antenna-Array-Assisted Frequency Offset Estimation and Data Detection in an Uplink Multiuser MIMO-OFDM Interference Network
Capacity Estimation in Multiple-Chip-Rate DS/CDMA Systems Supporting Multimedia Services
Enhancing QoS of Mobile Devices by a New Handover Process in PMIPv6 Networks
Improvement of the Performance Characteristic of UWB Antenna Using a Novel Double-Layer FSSs Operating at the Ku-Band
New Approximate Expressions for α-η-μ and α-κ-μ Fading Channels Subjected to Inverse Gaussian Shadowing With Applications
Genetic Algorithm for Improving the Lifetime and QoS of Wireless Sensor Networks
A Space-Time Trellis Code Design Method for OFDM Systems
Performance Evaluation and Resource Management of Hierarchical MACRO-/MICRO Cellular Networks using MOSEL-2
Performance Comparison of MIMO-STBC Systems with Adaptive Semiblind Channel Estimation Scheme
Enhancing Signal Detection in Frequency Selective Channels by Exploiting Time Diversity in Inter-symbol Interference Signal
Secure Deep Learning Framework for Cloud to Protect the Virtual Machine from Malicious Events
A Low-Complexity Genetic Algorithm for Joint Antenna Selection and Power Allocation in Hybrid STBC-SM MIMO Systems
Adaptive Sliding Mode Control of Robot Manipulator Based on Second Order Approximation Accuracy and Decomposed Fuzzy Compensator
A Mobility Handover Scheme for IPv6-Based Vehicular Ad Hoc Networks
SES: Stable and Efficient Solution for Rate Control and Spectrum Allocation in Wireless LANs
Distributed Rate Assignment for Multicarrier Multi-Cell Networks
Performance Studies of a Reside Number System Based CDMA System over Bursty Communication Channels
Improving the Reliability of Software-Defined Networks with Distributed Controllers Through Leader Election Algorithm and Colored Petri-Net
3D Human-Gesture Interface for Fighting Games Using Motion Recognition Sensor
Formal Specification and Verification of MQTT Protocol in PlusCal-2
Design and Analysis of a Flexible Softwear Antenna for Tumor Detection in Skin and Breast Model
Performance Analysis of Digitized Orthogonal Frequency Division Multiplexing System for Future Wireless Communication
Coverage and Link Quality Trends in Suburban Mobile Broadband HSPA Network Environments
Cryptanalysis of a Hash Based Mutual RFID Tag Authentication Protocol
Experimental Results for an Indoor Localization Method based on Angle-Delay Signatures
MIMO Channel Characterization for Short Range Fixed Wireless Propagation Environments
A Q Learning and Fuzzy Q Learning Approach for Optimization of Interference Constellations in Femto-Macro Cellular Architecture in Downlink
D-ETBMRPFS: Development of an Efficient Traffic Balanced Multicast Routing Protocol for Wireless Mobile Ad-hoc Network Using Fibonacci Sequence Approach
An Improved and Secure Two-factor Dynamic ID Based Authenticated Key Agreement Scheme for Multiserver Environment
A Generic Reliability Based Direct Decoding Algorithm for Turbo Codes
A Cloud-Based Wireless Radio Intensity Recording System
Correction to: Proposed Model for Radio Wave Attenuation due to Rain (RWAR)
Friendliness Based Trustworthy Relationship Management (F-TRM) in Social Internet of Things
OMCPR: Optimal Mobility Aware Cache Data Pre-fetching and Replacement Policy Using Spatial K-Anonymity for LBS
Automation System Software Assisting Educational Institutes for Attendance, Fee Dues, Report Generation Through Email and Mobile Phone Using Face Recognition
A Review and Comparative Analysis of PAPR Reduction Techniques of OFDM System
Research Progress on Security and Privacy of Federated Learning: A Survey
Density Based Fuzzy C Means Clustering to prolong Network Lifetime in Smart Grids
Continuous Gesture Recognition using HLAC and Low-Dimensional Space
Chaotic Visual Cryptography Based Digitized Document Authentication
Enhanced TOA Estimation Using OFDM over Wide-Band Transmission Based on a Simulated Model
Object Tracking and Recognition Based on Reliability Assessment of Learning in Mobile Environments
Multipath Channel Model for Radio Propagation over Sea Surface
Double Layers of Truncated Semi Rectangular Monopole Design with Trimmed Half Ground Plane
Performance Analysis of Time Reversal UWB Communication with Non-coherent Energy Detector
Energy Sensitive Cluster Level Security Selection Scheme for MANET
Noise Robust Speaker Identification Using RASTA-MFCC Feature with Quadrilateral Filter Bank Structure
Analyzing the Quality of Free Space Optical Signal in Fog: A Case Study of Pakistan
Design and Implementation of a Lightweight Mitigation Solution for Addressing Network Partitioning Attack Against RPL Protocol
Adaptive Context-Aware Energy Optimization for Services on Mobile Devices with Use of Machine Learning
FROG-MAC: A Fragmentation Based MAC Scheme for Prioritized Heterogeneous Traffic in Wireless Sensor Networks
MIMO System with Receive Combiner Bank Under Correlated Fading
Efficient Transmission of Encrypted Images with OFDM in the Presence of Carrier Frequency Offset
Optimal Admission Control Policy Based on Memetic Algorithm in Distributed Real Time Database System
Aggregate Interference of Equidistant Cognitive Radios
Omnidirectional Monopole Antenna for Use in Circular Cylindrical Microwave Imaging Systems
Emergency Event Web Information Acquisition using Crowd Web Sensors
Design of Antenna Array Based Beam Repositioning for IoT Applications
A Short-Term Power Load Prediction Algorithm of Based on Power Load Factor Deep Cluster Neural Network
Estimation of Distribution Algorithm for Joint Resource Management in D2D Communication
Optimal Relay Selection for Energy-Efficient Multicast
Concealed Information Test Using Neuro Evolution of Augmenting Topologies
Cooperative Coding for OFDM Systems
Editorial: Special Issue on "Wireless Innovation for Inter-dynamic Technology (WIDTH)" (Selected Topics from the Strategic Workshop, May 15-17, 2009, Rebild, Denmark)
Modulation Classification of MFSK Modulated Signals Using Spectral Centroid
Analysis of Outage Probability in Underlay Cognitive Radio-Inspired NOMA Systems Using the DF Relay in a Downlink Transmission
Research on Monitoring Platform of Agricultural Product Circulation Efficiency Supported by Cloud Computing
Cloud-Supported Seamless Internet Access in Intelligent Transportation Systems
Correction to: Performance Evaluation of Data-driven Intelligent Algorithms for Big data Ecosystem
Deep-Learning Based DOA Estimation in the Presence of Multiplicative Noise
A Secure Group-Based Blackhole Node Detection Scheme for Hierarchical Wireless Sensor Networks
Chronological Pattern Exploration Algorithm for Gene Expression Data Clustering and Classification
Dual Feed Pattern Reconfigurable Antenna for Wireless Applications
Exploiting HDU/FDU-NOMA Schemes for Reliable Communication in Post-disaster Scenario
Analysis of a Buyer-Seller Watermarking Protocol for Trustworthy Purchasing of Digital Contents
Minimizing the Total Energy Consumption in Multi-hop UWASNs
Optimal Cooperative Spectrum Sensing Under Faded and Bandwidth Limited Control Channels
A Leader Election Protocol for Cognitive Radio Networks
Direction-of-Arrival Estimation Based on Particle Swarm Optimization Searching Approaches for CDMA Signals
Analysis and Improvement on a Biometric-Based Remote User Authentication Scheme Using Smart Cards
Adaptive Modulation and Multiple Access for the OFDM Transmission Technique
Performance Analysis of Turbo Product Codes in Multipath Visible Light Communication Systems
Predicting Consumer Recommendation Decisions from Online Reviews: A Rough Set Approach
A Simple Closed form Approximation of Average Channel Capacity for Weakly Turbulent Optical Wireless Links
A 1 V, 0.53 ns, 59 μW Current Comparator Using Standard 0.18 μm CMOS Technology
Using Neural Networks to Detect Fire from Overhead Images
Design and Performance Comparison of W-OFDM Under the Nonlinear HPA Environment
Minimum Cross Correlation Spreading Codes
Robust Modified Multiple Signal Classification Algorithm for Direction of Arrival Estimation
Cooperative Spectrum Sensing Based on Complexity Measures for Cognitive Radio Communications
A Review on Hierarchical Routing Protocols for Wireless Sensor Networks
Cluster Head Selection Framework for Risk Awareness Enabled IoT Networks Using Ant Lion Optimisation Approach
On the Performance of Cracking Hash Function SHA-1 Using Cloud and GPU Computing
Optimal Relay Station Placement with Non-uniform User Distribution
Signal Design for Improved Multiple Access Capacity in DS-UWB Communication
Special Issue on "Cognitive Networks and Spectrum Management" (Selected Topics from the CTIF Workshop, May 31-June 1, 2010, Aalborg University, Denmark)
Design and Characterization of Solid-State LDMOS Based T/R Module
Improved Tampering Detection for Image Authentication Based on Image Partitioning
Coordinated Multicast/Unicast Transmission on 5G: A Novel Approach for Linear Broadcasting
Optimal Modulation Technique for MIMO FSO Link
Design of a Hybrid Transceiver Through P-Spice Simulation for Establishing Underwater Optical Wireless Communication Link
A Radon-Multiwavelet Based OFDM System Design and Simulation Under Different Channel Conditions
Detecting Malicious Roadside Units in Vehicular Social Networks for Information Service
Energy Harvesting Enabled Adaptive Mode Selection for Cognitive Device-to-Device Communication in a Hybrid Wireless Network: A Stochastic Geometry Perspective
Privacy Addressing-Based Anonymous Communication for Vehicular Ad Hoc Networks
Fuzzy Integration Algorithm of Big Data in Peer-to-Peer Communication Network Based on Deep Learning
Improving Positioning Algorithm Based on RSSI
Optimal Spectrum Allocation Based on Primary User Activity Model in Cognitive Radio Wireless Sensor Networks
Reinforcement Learning Based Antenna Beam Selection for Wireless Communications in Urban Environments
Data Aggregation Using Dynamic Selection of Aggregation Points Based on RSSI for Wireless Sensor Networks
Connectivity Analysis of Vehicular Ad Hoc Networks from a Physical Layer Perspective
Theoretical and Experimental Analysis of LED Lamp for Visible Light Communications
Channel Estimation for Pilot-Aided OFDM Systems in Single Frequency Network
Capacity Enhancement Using MIMO Antenna Arrays in Realistic Macro-Cellular Urban Environment
Inherent Security-aware Resource Utilizing Methodology for Cloud Environments
A Comparison of Energy Detectability Models for Cognitive Radios in Fading Environments
Understanding the Time and Frequency Varying Characteristics of a Multipath Wireless Channel
Telugu DNA for Safe Delivery: A Secured Text Communication
Improving Deep Learning Feature with Facial Texture Feature for Face Recognition
A Multi-user Receiver for Inter-Cell Interference Reduction in LTE PUCCH Signaling
A Provable Billing Protocol on the Current UMTS
The Mobile Media Based Emergency Management of Web Events Influence in Cyber-Physical Space
Correction to: Joint Optimization of Fusion Rule Threshold and Transmission Power for Energy Efficient CSS in Cognitive Wireless Sensor Networks
Implementation of Multimodal Interactive Continuous Scoring for 3D Quality of Experience