yusuke1997/dblp-id-title huggingface dataset:
Antenna Slewing Time Aware Mission Scheduling in Space Networks
Channel Selection for Secondary Users in Decentralized Network of Unknown Size
Space-Time Spreading Aided Distributed MIMO-WSNs
Improved Leakage-Based Precoding with Vector Perturbation for MU-MIMO Systems
MMSE Performance Analysis of Generalized Multibeam Satellite Channels
Improved Compressed Sensing-Based Random Access by Superposed Transmission
Gaussian Elimination Decoding of t-Error Correcting Reed-Solomon Codes in t Steps and O(t 2 ) Complexity
Cooperative Time-Frequency Localization for Wideband Spectrum Sensing With A Lightweight Detector
Totally blind APP channel estimation for mobile OFDM systems
Dynamic survivable routing heuristic for shared protected WDM optical networks
A Fixed-Complexity Soft-MIMO Detector via Parallel Candidate Adding Scheme and its FPGA Implementation
Continuous Phase Modulation Classification via Baum-Welch Algorithm
A Scalable Deep Reinforcement Learning Approach for Traffic Engineering Based on Link Control
Convergence behavior of the first-order time-delay digital tanlock loop
Full-Rate Cooperative Spectrum Sharing Scheme for Cognitive Radio Communications
Shortened Polar Codes Under Automorphism Ensemble Decoding
Near Optimal Implicit Feedback Generation for Coordinated Multipoint Transmission
Early-late timing recovery with decision-feedback equalizers
RIS-Based Wireless Sensor Networks: Passive Beamforming and Decision Gathering
Trajectory Design and Link Selection in UAV-Assisted Hybrid Satellite-Terrestrial Network
Large Intelligent Surface-Based Generalized Index Modulation
Smartphones: 3D Indoor Localization Using Wi-Fi RTT
Deterministic packet marking for max-min flow control
Dynamic Coded Cooperation With Incremental Redundancy: Throughput and Diversity-Multiplexing Tradeoff Analysis
A Universal Multiple Antenna Test for Spectrum Sensing
Manifold-Based Sum Rate Maximization for Uplink RIS-MIMO-NOMA With Imperfect SIC
A Dual-Mode Index Modulation Scheme With Gray-Coded Pairwise Index Mapping
Proactive Eavesdropping Via Jamming for Ergodic Rate Maximization Over Wireless-Powered Multichannel Suspicious System
Performance Modelling of Hybrid PQ-GPS Systems under Long-Range Dependent Network Traffic
Efficient Balanced and Maximum Homopolymer-Run Restricted Block Codes for DNA-Based Data Storage
Robust Optimization for AN-Aided Transmission and Power Splitting for Secure MISO SWIPT System
On the Ratio of Two Correlated Complex Gaussian Random Variables
Intelligent Reflecting Surface-Assisted Uplink SCMA System
Layered BP Decoding for Rate-Compatible Punctured LDPC Codes
Multi-Ring ERP Network Design: A Traffic Engineering Approach
Domain Adversarial Neural Network-Based Intrusion Detection System for In-Vehicle Network Variant Attacks
Joint Transmit Power and Time-Switching Control for Device-to-Device Communications in SWIPT Cellular Networks
Evaluating QoE in Cognitive Radio Networks for Improved Network and User Performance
Efficient and Fair Throughput-Optimal Scheduling in Buffer-Aided Relay-Based Cellular Networks
Design of an effective loss-distinguishable MAC protocol for 802.11 WLAN
Spatial Modulation Based Multiple Access for Ambient Backscatter Networks
A New SQRD-Based Soft Interference Cancelation Scheme in Multi-User MIMO SC-FDMA System
Reliable IoT Storage: Minimizing Bandwidth Use in Storage Without Newcomer Nodes
Transmit Laser Selection for Two Hop Decode and Forward FSO Communication With Pointing Errors
Cochannel interference suppression with successive cancellation in narrow-band systems
A Coarse-to-Fine Adaptive Kalman Filter for Weak GNSS Signals Carrier Tracking
Millimeter Wave Communications With Symmetric Uniform Circular Antenna Arrays
Adaptive Mobility Mapping for People Tracking Using Unlabelled Wi-Fi Shotgun Reads
Relay-Based Cooperative Spectrum Sensing Framework Under Imperfect Channel Estimation
A Gini Impurity-Based Interest Flooding Attack Defence Mechanism in NDN
Feature Space Analysis of Modulation Classification Using Very High-Order Statistics
Energy-Efficient NOMA-Based Mobile Edge Computing Offloading
A De-Noising 2-D-DOA Estimation Method for Uniform Rectangle Array
Topology Verification Enabled Intrusion Detection for In-Vehicle CAN-FD Networks
Throughput Analysis of Two-Way NCed-HARQ With Reverse-Link Assistance and Estimated Channel State Information
Wireless network coding by amplify-and-forward for bi-directional traffic flows
Comments on an Analytic Model of Vehicular Data Dissemination in Non-Deterministic Fading Channel
Federated Transfer Learning With Client Selection for Intrusion Detection in Mobile Edge Computing
Balanced Quaternary Sequences Pairs of Odd Period With (Almost) Optimal Autocorrelation and Cross-Correlation
GAN-Based Data Augmentation for AI-Enabled ATP in Free Space Optical Communication
Lightweight Semantic-Aware Communication With Packet Transmission
Simultaneous Wireless Information and Power Transfer in Cellular Networks With Directional Antennas
Power-Optimized Vertical Handover Scheme for Heterogeneous Wireless Networks
Efficient Pairing-Free Certificateless Signature Scheme for Secure Communication in Resource-Constrained Devices
On the Devroye-Mitran-Tarokh and Rini-Tuninetti-Devroye Achievable Rate Regions for the Cognitive Interference Channels
Global Design of Double Protograph LDPC Codes for Joint Source-Channel Coding
A Novel Low Complexity-Sparse Recovery Detector for Differential Space Shift Keying MIMO System
User Scheduling Based on Multi-Agent Deep Q-Learning for Robust Beamforming in Multicell MISO Systems
Co-channel interference analysis of shadowed Rician channels
SNR Performance Analysis of Reconfigurable Antennas
A Novel ZCZ Code Based on m-Sequences and its Applications in CDMA Systems
Large-Scale Multipair Two-Way Relay Networks with Distributed AF Beamforming
Joint iterative interference cancellation and parameter estimation for cdma systems
A Novel Approach for Service Function Chain Dynamic Orchestration in Edge Clouds
Effects of multiple threshold values in double dwell DS-SS code acquisition systems
Improved phase factor computation for the PAR reduction of an OFDM signal using PTS
A Novel Clustering-Based Detector for RIS-Assisted Spatial Modulation Systems
Effect of Threshold Quantization in Opportunistic Splitting Algorithm
Spectral Efficiency of Time-Variant Massive MIMO Using Wiener Prediction
Lognormal Sum Approximation with Type IV Pearson Distribution
UEP LT Codes with Intermediate Feedback
A multifractual traffic policing mechanism
Joint Optimal Design for Outage Minimization in DF Relay-Assisted Underwater Acoustic Networks
Comments on "Spatial fading correlation function of circular antenna arrays with Laplacian energy distribution"
A Novel TLS-Based Antenna Reciprocity Calibration Scheme in TDD MIMO Systems
Uplink Spatial Modulation SCMA System
Multicast Least Cost Anypath Routing: Route Cost Calculations and Forwarding
Design of Binary and Nonbinary Codes from Lifting of Girth-8 Cycle Codes with Minimum Lengths
An enhanced uplink scheduling algorithm based on voice activity for VoIP services in IEEE 802.16d/e system
Risk-Sensitive Task Fetching and Offloading for Vehicular Edge Computing
Outage Analysis of Distributed Antenna System with Delayed CSI and Unequal-Power Cochannel Interferers
Threshold Saturation for Nonbinary SC-LDPC Ensembles on Discrete-Input Memoryless Channels
Bi-directional SOVA decoding for turbo-codes
Online Supervised Learning for Traffic Load Prediction in Framed-ALOHA Networks
Ciphertext-Only Attack on Linear Feedback Shift Register-Based Esmaeili-Gulliver Cryptosystem
On BATS Codes With Variable Batch Sizes
Staged Growth Codes: Intermediate Performance and Overhead Analysis
Single-Carrier Frequency-Domain Equalization With Index Modulation
Spectrum and Energy Efficiency in Massive MIMO Enabled HetNets: A Stochastic Geometry Approach
Scalable Multiuser Immersive Communications With Multi-Numerology and Mini-Slot
MIMO Channel Information Feedback Using Deep Recurrent Network
Deep Learning-Based Spectrum Sensing in Cognitive Radio: A CNN-LSTM Approach
Adaptive Transmission Control in Multiple Interference Neutralization Groups
Blind Interference Alignment for Multiuser MISO Indoor Visible Light Communications
Low-Power High-Capacity Full-Duplex Scheme for Uplink Self-Backhauling
Regret-Optimal Cross-Layer Co-Design in Networked Control Systems - Part II: Gauss-Markov Case
Signal constellation design for symbol-level rate adaptation in AWGN channels
Correction to "On the Error Rate Performance and Asymptotic Diversity Order of Multi-Hop Two-Antenna Decode-and-Forward Relay Systems with STBC-CIOD over Rayleigh Fading Channels" [Jun 13 1077-1080]
Lightweight Convolutional Neural Networks for CSI Feedback in Massive MIMO
On the code and interleaver design of broadband OFDM systems
DEAR: Delay-Guaranteed Energy Profile-Aware Routing Toward the Green Internet
Analysis of the LTE Access Reservation Protocol for Real-Time Traffic
On the achievable rate region of gaussian cognitive multiple access channel
DFT-Based Channel Estimator for OFDM Systems with Leakage Estimation
Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems
Design of Intelligent Reflecting Surface Phase Shifts for Uplink SCMA
Design of turbo-like codes for short frames
Adaptive Decoding Algorithm With Variable Sliding Window for Double SC-LDPC Coding System
Detection Analysis of CRC-Assisted Decoding
Randomized Serially Concatenated LDGM Codes for the Gaussian Wiretap Channel
Trade-Off Between Efficiency and Complexity in Multi-Stage Embedding of Multicast VNF Service Chains
Strong Diffie-Hellman-DSA Key Exchange
An Improved Parameter Computation Method for a MIMO V2V Rayleigh Fading Channel Simulator Under Non-Isotropic Scattering Environments
Reconfigurable key management for broadcast encryption
Simplified Compression of Redundancy Free Trellis Sections in Turbo Decoder
Moving-Window DFT Based Frequency-Locked Loop for FM Demodulation
Joint Dimming and Communication Design for Visible Light Communication
Closed Form Expressions for Detection Threshold and Sample Size for Spectrum Sensing Considering Instantaneously Non-Identically Distributed Samples
Modeling 3GPP LTE Advanced DRX Mechanism Under Multimedia Traffic
On the Exact Closed-Form ABEP Analysis of Downlink NOMA Over mmWave TWDP Fading
Joint Blind Frame Synchronization and Encoder Identification for Low-Density Parity-Check Codes
DoF Achieving Propagation Delay Aligned Structure for K × 2 X Channels
Resource Sharing of Underlaying Device-to-Device and Uplink Cellular Communications
Minimum Pearson Distance Detection Using a Difference Operator in the Presence of Unknown Varying Offset
Robust Movable-Antenna Position Optimization With Imperfect CSI for MISO Systems
Performance Modeling of Delayed Offloading in Mobile Wireless Environments With Failures
Blind Reconstruction of BCH Codes Based on Consecutive Roots of Generator Polynomials
Is Backscatter Link Stronger than Direct Link in Reconfigurable Intelligent Surface-Assisted System?
BER-Optimized Precoders for OFDM Systems With Insufficient Cyclic Prefix
Secure Beamforming for RIS-Aided ISAC System With CRB Minimization
Handover Rate Analysis for K-Tier Heterogeneous Cellular Networks With General Path-Loss Exponents
Capacity estimation of a SIR-based power-controlled cellular CDMA system with base station diversity in a multipath fading environment
Relating the AAA and the Radio Access Rates in 3G Cellular Networks
Correlated Equilibrium Based Distributed Power Control in Cognitive Satellite-Terrestrial Networks
RIS-Assisted NOMA With Interference-Cancellation and Interference-Alignment Scheme
A BPPE Algorithm for Instantly Decodable Network Coding in Wireless Broadcasting
Block-Based Kalman Channel Tracking for LEO Satellite Communication With Massive MIMO
Energy-Efficient Resource Allocation for IRS-Assisted SWIPT-Enabled D2D Communications With Imperfect CSI
Semi-Blind Millimeter-Wave Channel Estimation Using Atomic Norm Minimization
Random Waypoint Mobility Model in Space Modulation Systems
A Synergistic Cross-Domain Network Integrating Time-Frequency-Spatial Features for Modulation Recognition
Differential multiple-length transmit diversity
Blind CFO Estimation in OFDMA Uplink Transmission With General Carrier Assignment Scheme
Label preference schemes in GMPLS controlled networks
Reducing International Roaming Call Costs with Multiple Mobile Phone Numbers
A Practical Max-Min Fair Resource Allocation Algorithm for Rate-Splitting Multiple Access
Multiplexing Gain of Variable-Rate MIMO Systems
Channel Estimation for Near-Field Line-of-Sight XL-MIMO Communications Using Geometric Prior
Security of Binary Modulated Continuous Variable Quantum Key Distribution Using Optimally Displaced Threshold Detection
On subscription admission control for network service provision
On the Performance of Cell-Free Massive MIMO With Mixed-ADC Under Rician Fading Channels
An EXIT-Based Design Method for LDPC-Coded Schemes without Gaussian Assumptions
Feedforward ML-based timing estimation with PSK signals
Decentralized Precoding Algorithm with Weighted SLNR for Limitedly Coordinated Network
Sparse Bayesian Learning Approach to Adaptive Beamforming Assisted Receivers
Average Number of Recirculations in SDL Constructions of Optical Priority Queues
Traffic-reduced precise ranging protocol for asynchronous UWB positioning networks
Spatial Modulation in MIMO Limited-Feedback Spectrum-Sharing Systems With Mutual Interference and Channel Estimation Errors
Storage-Aided Topology Control for Optical Wireless Backbone Networks With Weather Disturbances
Interference Alignment with Cooperative Primary Receiver in Cognitive Networks
Shared Channel Ordered Transmissions for Energy-Efficient Distributed Signal Detection
Dynamic Cooperative Retransmission Scheme for TDMA Systems
Erasure rate analysis and tighter upper bound for binary product codes
An efficient local search heuristics for asynchronous multiuser detection
Improvements in belief-propagation decoding based on averaging information from decoder and correction of clusters of nodes
Hybrid symbol- and bit-based source-controlled channel decoding for MELP speech parameters
GLRT-Based Spectrum Sensing Techniques for Pulse Radar Signals
Polarization Effects for Indoor Wireless Communications at 60 GHz
Modeling and Analysis for Cache-Enabled Networks With Dynamic Traffic
Low-Complexity Vector-by-Vector Detector for AFDM-IM Systems by Reconstructing Sparse Channel Matrix
Optimal Task Assignment With Delay Constraint for Parked Vehicle Assisted Edge Computing: A Stackelberg Game Approach
A Consensus-Based Coverage Algorithm For Self-Organizing Femtocell Networks
On the Statistics of the α-Beaulieu-Xie and Its Extreme Distributions With Their Applications
Joint Transceiver Design for Incremental Channel Estimation in Distributed MIMO Systems
Signal Reconstruction With Semidefinite Relaxation Optimization in Uplink Massive MIMO Systems
Covariance-Free Variational Bayesian Learning for Correlated Block Sparse Signals
Block Sparse Bayesian Learning-Based Channel Estimation for MIMO-OTFS Systems
POMDP-Based Cell Selection Schemes for Wireless Networks
A Novel Space Time Block Code Scheme for Three Time Slots and Two Transmit Antennas
Data transmission when the sampling frequency exceeds the Nyquist rate
A trellis-based method for removing cycles from bipartite graphs and construction of low density parity check codes
Toward Increasing Packet Diversity for Relaying LT Fountain Codes in Wireless Sensor Networks
Application of efficient Chase algorithm in decoding of generalized low-density parity-check codes
Low-Altitude Communication Networks Planning for Air Routes Coverage Based on Semi-Supervised GCN
A Homomorphism Transform Based Analysis of Sparse Random Linear Network Coding Over Erasure Channels
Global Satellite Navigation Distributed Synchronous Spoofing Monitoring Method Based on Spatial Cross-Correlation Spectrum
From Signal to Image: Capturing Fine-Grained Human Poses With Commodity Wi-Fi
A Serial Concatenation-Based Coding Scheme for Dimmable Visible Light Communication Systems
Blind Multiuser Localization in Cognitive Radio Networks
RSD: Rate-Based Sync Deferment for Personal Cloud Storage Services
Extended LLL algorithm for efficient signal precoding in multiuser communication systems
Outage-Optimal Allocation of Relay Power for Analog Network Coding with Three Transmission Phases
Virtual Network Function Scheduling: A Matching Game Approach
Hybrid Near-Field and Far-Field Localization With Multiple Reconfigurable Intelligent Surfaces
On a Spectrum Resource Organization Strategy for Scheduling Time Reduction in Carrier Aggregated Systems
Terminal Selection Schemes in Terminal-Collaborated MIMO Reception Based on Subband Channel Matrices
An Optimal Real-Time Distributed Algorithm for Utility Maximization of Mobile Ad Hoc Cloud
Secure Delegation-Based Authentication Protocol for Wireless Roaming Service
Low Complexity IQ Mismatch Compensation Algorithm With Channel Awareness for Two-Path Successive Relay Networks
A TDMA-based MAC protocol with cooperative diversity
Joint Scheduling and Resource Allocation for Packets With Deadlines and Priorities
On the Beamforming Design of Cross-Band OWC/RF Cell-Free MIMO
Joint Subcarrier Assignment and Power Allocation for OFDM-Based Integrated Sensing and Communication
Fast Scheduling for Delay Minimization in UWB Wireless Networks
A note on the estimation of Nakagami-m fading parameter
An Efficient Pilot Design Scheme for Sparse Channel Estimation in OFDM Systems
A Pulse Position-Based Spatio-Temporal Coded Modulation for Molecular MIMO Systems
Locating Defense Positions for Thwarting the Propagation of Topological Worms
Transferable Sparse Adversarial Attack on Modulation Recognition With Generative Networks
Codes Correcting a Burst of Deletions for Permutations and Multi-Permutations
Joint Optimal Threshold-Based Relaying and ML Detection in Cooperative Networks
Sensing Rate Optimization for Multi-Band Cooperative ISAC Systems
Low-Complexity Covariance Matrix Reconstruction Method for Wideband Adaptive Beamforming
A simple capacity formula for correlated diversity Rician fading channels
Binary Linear Codes With Two Weights
Corrections to "Performance Analysis of Cognitive Spectrum Sharing With Time Division Broadcast Protocol"
Exact bit error rate analysis of TH-PPM UWB systems in the presence of multiple-access interference
Fast and Accurate Approximations for the Analysis of Energy Detection in Nakagami-m Channels
High Throughput Pipeline Decoder for LDPC Convolutional Codes on GPU
Distributed Resource Allocation for D2D Communications Underlaying Cellular Networks in Time-Varying Environment
Energy Efficiency of Massive MIMO Downlink WPT With Mixed-ADCs
Helical interleaver set design for interleave-division multiplexing and related techniques
GACN: Self-Clustering Genetic Algorithm for Constrained Networks
Link Envelope Correlation in the Backscatter Channel
Iterative Semi-Coherent Receiver for Coded LoRa Systems
Semantic Communication-Aware Federated Fine-Tuning of Large Language Models
On Mutual Information-Based Optimal Quantizer Design
Sum Rate Maximization for Self-Sustainable IRS-Assisted UAV Communications
Outage Performance for Cognitive Relay Networks with Underlay Spectrum Sharing
Rate Enhancement for the Gaussian Z-Interference Channel with Transmitter Cooperation
Block-error probabilities for mobile radio channels derived from chaos equations
Spectral density of random UWB signals
Deep Learning-Based Denoise Network for CSI Feedback in FDD Massive MIMO Systems
An Improved Reliability-Based Decoding Algorithm for NB-LDPC Codes
High-Mobility Multi-Modal Sensing for IoT Network via MIMO AirComp: A Mixed-Timescale Optimization Approach
Improving the performance of space shift keying (SSK) modulation via opportunistic power allocation
Characterizing Bursts of Aggregate Pairs With Individual Poissonian Activity and Preferential Mobility
CGAN-Based Data Augmentation for Enhanced Channel Prediction in Massive MIMO Under Subway Tunnels
An approximate maximum likelihood estimator for SNR jointly using pilot and data symbols
Stability and Immunization Analysis of a Malware Spread Model Over Scale-Free Networks
An efficient genetic algorithm for anycast routing in delay/disruption tolerant networks
Leveraging the Survivable All-Optical WDM Network Design With Network Coding Assignment
Optimality of Homogeneous Sensing Range Assignment in Large-Scale Wireless Sensor Network Deployments
Contract-Based Incentive Mechanism for Cooperative NOMA Systems
Blind Identification of LDPC Codes Based on a Candidate Set
Unsupervised Learning for Parametric Optimization
A Performance Comparison of Polar Codes and Reed-Muller Codes
Tight Upper Bound for Stability of TCP/RED Systems in AQM Routers
Performance Optimization of Tomlinson-Harashima Precoder with Tilted Constellation
Performance Analysis of Time Reversal Communication Systems
Secrecy Outage on Transmit Antenna Selection With Weighting Errors at Maximal-Ratio Combiners
Successive Interference Cancellation With Feedback for Random Access Networks
Virtual path analysis of selective RAKE receiver in dense multipath channels
Intelligent Reflecting Surface-Assisted Multiple Access With User Pairing: NOMA or OMA?
Multilevel LDPC codes design for semi-BICM
Rewarded Access to a Sleeping Base Station
Impact of antenna downtilting on network performance in GERAN systems
Energy-Efficient Downlink NOMA Transmission Enabled by Continuous Phase Modulation
CSI-Secured Orthogonal Jamming Method for Wireless Physical Layer Security
Fair Computation Efficiency for OFDMA-Based Multiaccess Edge Computing Systems
A new vector quantization technique for performance evaluation in frequency hopping mobile radio systems
On the Complexity of Trilateration with Noisy Range Measurements
Finite Blocklength Covert Communications in Interweave Cognitive Radio Networks
Cross-layer cut-through switching mechanism for IEEE 802.16d/e wireless networks
Multi-Objective Mapping Method for 3D Environmental Sensor Network Deployment
Efficient Wavelength Assignment Policy for XPM-Impaired WDM Networks
A two-dimensional multipath channel estimator for CDMA systems with timing-offset errors
A Novel Drive-Thru Internet Channel Access Scheme
Multidimensional mapping for bit-interleaved coded modulation with BPSK/QPSK signaling
Aggregation-Assisted Combining for MIMO Multiple ARQ Systems
Antenna-assisted round robin scheduling for MIMO cellular systems
Performance enhancement of IP forwarding by reducing routing table construction time
Approximation to the symmetric capacity of Rayleigh fading channels with multi-level signals
Coverage Characterization of STAR-RIS Networks: NOMA and OMA
Non-Line-of-Sight Identification for UWB Positioning Using Capsule Networks
L-band land mobile satellite (LMS) amplitude and multipath phase modeling in urban areas
Error Probability Analysis of a MIMO System With Noncoherent Relaying and MMSE Reception
Groupers for deterministic guaranteed service in an FH-OFDM wireless system
Flexible Channel Coding Approach for Short-Length Codewords
Rethinking the Intercept Probability of Random Linear Network Coding
Channel Fingerprint Based Beam Tracking for Millimeter Wave Communications
Angle-Dependent Phase Shifter Model for Reconfigurable Intelligent Surfaces: Does the Angle-Reciprocity Hold?
Resource Allocation for IRS-Assisted Uplink URLLC Systems
Open Set Recognition of Communication Signal Modulation Based on Deep Learning
Intelligent Reflecting Surface Partitioning-Based Channel Modeling and Performance Analysis
LMA initiated route optimization protocol for improving PMIP handover performance
Duty cycle optimization for a multi hop transmission method in wireless sensor networks
Exploiting Deep Learning in the Performance Evaluation of EH-Based Coordinated Direct and Relay Transmission System With Cognitive NOMA
Energy Efficiency of Uplink Massive MIMO Systems With Successive Interference Cancellation
Stochastic Arrow-Hurwicz Algorithm for Path Selection and Rate Allocation in Self-Backhauled mmWave Networks
Analysis of STAR-RIS-Assisted Downlink CoMP-NOMA Multi-Cell Networks Under Nakagami-m Fading
Hybrid Duplex Wireless Peer Discovery With Imperfect Self-Interference Cancellation