yusuke1997/dblp-id-title huggingface dataset:
Probability of Pilot Interference in Pulsed Radar-Cellular Coexistence: Fundamental Insights on Demodulation and Limited CSI Feedback
On Low Complexity ML Decoder for Quaternion Orthogonal Designs
A Greedy Flee in the Direction Routing Algorithm for Data Quality Control System of 3D Seismic Sensors Array
Convergence of REM flow control at a single link
Analysis of RAKE reception with MRC and imperfect weight estimation for binary coherent orthogonal signaling
Space-time trellis-coded transmissions with parallel sequences over time-varying channels
On the Performance Analysis of Energy-Efficient Upstream Scheduling for Hybrid Fiber-Coaxial Networks with Channel Bonding
An improved conditional maximum-likelihood detector for noncoherent UWB communication
Inter-Neuron Interference Analysis in Neuro-Synaptic Communications
Two-Dimensional Off-Grid DOA Estimation Using Unfolded Parallel Coprime Array
Capacity Analysis for Path Selection Based DF MIMO-OSTBC Cooperative Wireless Systems
A Simplified Approach to Achieving the Capacity of the AWGN Channel With Erasures Using Nested Lattice Codes
Using Continuous Power Modulation for Exchanging Local Channel State Information
Impact of Multidirectional Forwarding on the Capacity of Large Wireless Networks
Decoding with Early Termination for Raptor Codes
Removal of ICI and IBI in Wireless Heterogeneous Networks With Timing Misalignment
Coordinated Multicell Multicast Beamforming Based on Manifold Optimization
VoIP Scheduling Algorithm for AMR Speech Codec in IEEE 802.16e/m System
New Constructions of 16-QAM Periodic Complementary Sequences
Partial Transmit Sequence Scheme for Envelope Fluctuation Reduction in OFDMA Uplink Systems
Generalized Coprime Planar Array Geometry for 2-D DOA Estimation
Low-Complexity Signal Detection for Large-Scale Quadrature Spatial Modulation Systems
Performance of the site diversity technique in Singapore: preliminary results
Can a DDoS Attack Meltdown My Data Center? A Simulation Study and Defense Strategies
Near-Optimal Probing Planning for In-Band Network Telemetry
Learning-Based Two-Way Communications: Algorithmic Framework and Comparative Analysis
Power Controlled Reverse Channel Training Achieves an Infinite Diversity Order in a TDD-SIMO System with Perfect CSIR
Low-Complexity Soft-Output Sphere Decoding with Modified Repeated Tree Search Strategy
UAV-to-GEO-Satellite Covert Communication With Multiple Cooperative Wardens
A Self-Attention-Based I/Q Imbalance Estimator for Beyond 5G Communication Systems
Training-Based Hybrid Precoding Scheme for Multiuser Massive MIMO-OFDM
Coverage Analysis for Reconfigurable Intelligent Surface-Assisted Cellular Networks Over Nakagami-m Fading Channels
A Fuse-and-Forward Protocol for Two-Way Relaying Networks With Relay Having Its Own Broadcasting Information
On Optimal and Near-Optimal Turbo Decoding Using Generalized max* Operator
Optimization of Duplex Mode Selection for Network-Assisted Full-Duplex Cell-Free Massive MIMO Systems
A Low-Complexity Carrier Frequency Offset Estimator Independent of DC Offset
Eavesdropper Localization in Random Walk Channels
Simultaneous Optical Phase and Intensity Modulation Transmits Independent Signals in Radio Over Fiber Communication
Enhancing Fairness-Aware Massive Wireless Powered IoT Connectivity by IRS
Emotion-Aided Semantic Communication System for Reliable Semantic Recovery Under Low SNR
Beyond-Line-of-Sight Ducting Channels: Coherence Bandwidth, Coherence Time and Rain Attenuation
Stochastic Coverage Analysis for Multi-Altitude LEO Satellite Networks
Secure Transmission Design and Performance Analysis for Cooperation Exploring Outdated CSI
Throughput Scaling of Wireless Ad Hoc Networks With No Side Information
GNSS-Independent Uplink LEO Satellite Synchronization
Optimal Degrees of Freedom Region for the Asymmetric MIMO Y Channel
Performance Optimization of 2-PolSK in UV Scattering Communication Channels
Exact Frequency Estimation in the i.i.d. Noise via KL Divergence of Accumulated Power
Coverage Performance of NOMA in Wireless Caching Networks
On the symbol error probability of general order rectangular qam in nakagami-m fading
CSI Partitioning Method with PCA-Based Compression for Low-Complexity Feedback of Large-Dimensional Channels
On Joint Cryptographic Verification and Channel Decoding via the Maximum Likelihood Criterion
Environment-Specific Beam Training for Extremely Large-Scale MIMO Systems via Contrastive Learning
Efficiency Enhancement for Underwater Adaptive Modulation and Coding Systems: Via Sparse Principal Component Analysis
Blind Parameters Estimation for Time-Frequency Overlapped Satellite Signals
Middle Subarray Interference Covariance Matrix Reconstruction Approach for Robust Adaptive Beamforming With Mutual Coupling
Further cryptanalysis of the McEliece public-key cryptosystem
Characterizing the traffic distribution in linear wireless sensor networks
Detecting Pilot Spoofing Attack in MISO Systems With Trusted User
Signal detection for non-orthogonal space-time block coding over time-selective fading channels
MCBF: a high-performance scheduling algorithm for buffered crossbar switches
Handover Analysis in Aerial Base Station Networks With Different Altitudes
User Selection in Reconfigurable Intelligent Surface Assisted Communication Systems
A High Data Rate Wireless Communication System With Improved Secrecy: Full Duplex Beamforming
SD4ADDR: Enhancing Vehicular Connectivity With SDN Through Address Translation
ADMM Based Symbol-Level Precoding for MU-MISO Downlink With Low-Resolution DACs
Compact Pulse Shaping for Efficient PAM/QAM Signaling
Minimum delay path selection in multi-homed systems with path asymmetry
Hermitian Self-Dual, MDS, and Generalized Reed-Solomon Codes
A Simple Accurate Method for Generating Autocorrelated Nakagami-m Envelope Sequences
Joint Resource Allocation for User-Centric Cell-Free Integrated Sensing and Communication Systems
Adaptive Spatial Modulation for Wireless MIMO Transmission Systems
Deep Semi-Supervised Learning-Based Spectrum Sensing at Low SNR
Robust Coprime MIMO System Based on New Transmit-Receive Configurations
Functional Duality Between Distributed Source Coding with One Distortion Criterion and Semi-Deterministic Broadcast Channel Coding in the Case of Correlated Messages
A modified covariance-based mobile velocity estimation method for Rician fading channels
Multi-Tag Localization in Cooperative AmBC
Low-Complexity MMSE Receiver Design for Massive MIMO OTFS Systems
Extended Quadratic Field Compositum Code for Parallel FSO-MIMO Communications
Parameter Estimation of Bernoulli-Gaussian Noise Using Fractional Order Absolute Moments
MIMO Free-Space Optical Communications Using Photon-Counting Receivers Under Weak Links
Artificial Noise Assisted Communication in the Multiuser Downlink: Optimal Power Allocation
Power Aware Cooperative Routing in Wireless Mesh Networks
A SVD-Based Location Coding for Cognitive Radio in MIMO Uplink Channels
Traffic-Aware Dynamic Frequency Band Allocation Scheme for OFDMA System
Realizing Neural Decoder at the Edge With Ensembled BNN
Power law characteristics and loss probability: finite buffer queueing systems
Design and Optimization of LDPC Precoded Finite-Length BATS Codes Under BP Decoding
Swapped Sectors Detection Based on Mobility Statistics
Joint Trajectory and Power Optimization for UAV Relay Networks
Capacity Scaling Law in Opportunistic Amplify-and-Forward Relaying with Selective ID Feedback
Throughput Maximization in Backbone-Assisted Wireless Powered Communication Networks With Successive Interference Cancellation
Binary searches on multiple small trees for IP address lookup
Performance of Multipulse Pulse-Position Modulation in NLOS Ultraviolet Communications
Complex Convolutional Neural Network for Signal Representation and Its Application to Radar Emitter Recognition
Markov model for dynamic behavior of ranging errors in indoor geolocation systems
Bit Error Rate Analysis for DFT-S-OFDM Systems Under Impulsive Noise
STAR-RIS-Assisted Multicast Communications in DFRC-UAV-Enabled ISAC Systems
High-Security Chaotic Cognitive Radio System With Subcarrier Shifting
The sensitivity of downlink MC-DS-CDMA to carrier frequency offsets
Spurious Signal Rejection using Real-Time Imbalance Compensation in Direct Conversion Transmitter
A pre-whitening scheme in a MIMO-based spectrum-sharing environment
Low-Complexity Construction of Polar Codes Based on Genetic Algorithm
On the Performance of a PLC System Assuming Differential Binary Phase Shift Keying
The impact of one-time energy costs on network lifetime in wireless sensor networks
A tabu search heuristic for the routing and wavelength assignment problem in optical networks
Hierarchical Multilevel Space-Shift Keying for Unequal Error Protection under Rician Fading
An Uplink Multiple Access Scheme Using Pilot-Free Channel Estimation
An Efficient Receiver for Preamble Detection in LTE SC-FDMA Systems with an Antenna Array
SER for Optimal Combining in the Presence of Multiple Correlated Co-Channel Interferers
CAPC: a collision avoidance power control MAC protocol for wireless ad hoc networks
Geomagnetic Positioning-Aided Wi-Fi FTM Localization Algorithm for NLOS Environments
A Learning-Based AoA Estimation Method for Device-Free Localization
Partial Matrix Completion Algorithm for Efficient Data Gathering in Wireless Sensor Networks
Noise-Robust Multilayer Perceptron Architecture for Distributed Denial of Service Attack Detection
Space-Time Mapping for Equiprobable Antenna Activation in Spatial Modulation
On timing offset estimation for OFDM systems
Modeling and evaluation of serial multicast remote procedure calls (RPCs)
Probability Distribution of End-to-End Delay in a Highway VANET
Diffusion Model Based Resource Allocation Strategy in Ultra-Reliable Wireless Networked Control Systems
Design of Nonorthogonal Multiple Access Systems: An Information Bottleneck Perspective
Edge sidelobe suppressor scheme for OFDMA uplink systems
A population declining mutated ant colony optimization multiuser detector for MC-CDMA
Cognitive Radios for Preserving Primary Outage Performance over Two-Hop Relay Channels
Wideband Blind Calibration for UCA OAM Communication System
Optimized low-density parity-check codes for partial response channels
UAV Selection and Link Switching Policy for Hybrid Tethered UAV-Assisted Communication
Parameter-Free ℓ p -Box Decoding of LDPC Codes
Lowering Error Floors of Systematic LDPC Codes Using Data Shortening
Hypergraph-Based Resource Allocation for Ultra-Dense Wireless Network in Industrial IoT
Zero-Effort Proximity Detection With ZigBee
Characterization of bluetooth packet delay in noisy environments
Adaptive Hysteresis Using Mobility Correlation for Fast Handover
Spatially Distributed Molecular Communications: An Asynchronous Stochastic Model
Exact Outage Analysis of Dual-Hop Fixed-Gain AF Relaying with CCI under Dissimilar Nakagami-m Fading
Neural Layered Decoding of 5G LDPC Codes
The Teager-Kaiser Energy Operator in Presence of Multiple Narrowband Interference
A Space Shift Keying for Downlink Multi-User Transmission With Partial CSI in Massive MIMO Systems
DRNet: Deep Learning-Based Dual-Branch Receiver for OFDM With Nonlinear Distortions
An efficient blind decision feedback equalizer
Optimal Service Placement for 6G Edge Computing With Quantum-Centric Optimization in Real Quantum Hardware
Ball-Tree-Based Signal Detection for LMA MIMO Systems
Per-Hop Delay Compensation in Time Synchronization for Multi-Hop Wireless Sensor Networks Based on Packet-Relaying Gateways
The restricted shortest-path-based topology control algorithm in wireless multihop networks
A Bio-Inspired Quality of Service (QoS) Routing Algorithm
Information Freshness Analysis of Slotted ALOHA in Gilbert-Elliot Channels
Another Look at Multibranch Switched Diversity Systems
Polyphase Scrambled Walsh Codes for Zero-Correlation Zone Extension in QS-CDMA
Sparse Channel Estimation for Spatial Non-Stationary Massive MIMO Channels
On the α-Stable Distribution of Base Stations in Cellular Networks
Applying the Chinese Remainder Theorem to Data Aggregation in Wireless Sensor Networks
Capacity of the Gaussian Relay Channel with Correlated Noises to Within a Constant Gap
Recursive Channel Estimation Method for OFDM-Based Cooperative Systems
Recursive formulas for the moments of queue length in the BMAP/G/1 queue
A General, Tractable and Accurate Model for a Cascade of LRU Caches
Novel Single-RF MIMO System Based on Repetitive Pulse Width Modulation
On the Doppler power spectrum at the mobile unit employing a directional antenna
Wireless for Control: Over-the-Air Controller
Energy-Efficient and Low-Complexity Schemes for Uplink Cognitive Cellular Networks
DFT-Spread-OFDM-Based Chirp Transmission
An achievable rate region of cooperative multiple-access channels with hybrid CF and DF cooperation
Block Markov Superposition Transmission of Repetition and Single-Parity-Check Codes
Parsimonious Fitting of Long-Range Dependent Network Traffic Using ARMA Models
Channel Characteristics for Diffusive Molecular Communications in a Spherical Shell
On the implications of the off periods distribution in two-state traffic models
A Low-Complexity Detection Scheme for Generalized Spatial Modulation Aided Single Carrier Systems
Preemption-Enabled Setup of Optical Connections Coupled with Event-Driven Rerouting
Distributed TOA-Based Positioning in Wireless Sensor Networks: A Potential Game Approach
Optimizing Performance of a Backscatter-Assisted Underlay Network
Enhanced crankback for lightpath setup in multi-domain optical networks
Protection Ratio and Antenna Separation for DVB - T/LTE Coexistence Issues
A New Approach to Achieve a Trade-Off Between Direction-of-Arrival Estimation Performance and Computational Complexity
An OFDM with 3-D signal mapper and 2-D IDFT modulator
Pricing-Based Semi-Distributed Clustering and Beamforming for User-Centric MIMO Networks
Selection Combining of Signals with Different Modulation Levels in Nakagami-m Fading
A Successive Epidemic Prevention Infrastructure Using Mobile Robots and Smart Devices in Intelligent Public Area
Second Phase Reconfiguration of Restored Path for Removal of Loop Back in P-Cycle Protection
Space-Time and Space-Frequency Block Coded Vector OFDM Modulation
Secure Code Dissemination and Remote Image Management Using Short-Lived Signatures in WSNs
Backhaul-Aware User Association and Resource Allocation for Massive MIMO-Enabled HetNets
Non-Alternating Globally Optimal MMSE Precoding for Multiuser VLC Downlinks
A Low Complexity PAPR Reduction Scheme for OFDM Systems via Neural Networks
Analog Versus Hybrid Precoding for Multiuser Massive MIMO With Quantized CSI Feedback
Multi-Tier Caching and Resource Sharing for Video Streaming in 5G Ultra-Dense Networks
IAMLO: An Immediate-Access Multi-Link Operation for Improving Throughput in Heterogeneous IEEE 802.11be Networks
Detection of Multicast Video Flooding Attack using the Pattern of Bandwidth Provisioning Efficiency
Iterative Channel Estimation for OTFS Systems Based on Low-PAPR Hybrid Superimposed Pilots
Output Distributions of Capacity-Achieving Codes for Gaussian Multiple Access Channels
Performance Analysis of Intelligent Reflecting Surface Aided Wireless Networks With Wireless Power Transfer
A Novel Nondata-Aided Synchronization Algorithm for MSK-Type-Modulated Signals
Asymptotic Capacity Lower Bound for an OFDM System With Lasso Compressed Sensing Channel Estimation for Bernoulli-Gaussian Channel
Fingerprint-Based Sparse-Constrained Sequential Sensing: Joint Detection and Tracking With Massive Antennas
Enhanced Mode Measurement of Vortex Electromagnetic Wave Based on Aperture Symmetry
Optimization Models for Misalignment Fading Mitigation in Optical Wireless Links
A cache scheme for femtocell reselection
AMCRN: Few-Shot Learning for Automatic Modulation Classification
SVD-Based Design for Non-Orthogonal Frequency Division Multiplexing
A Novel Embedded Pilot-Aided OCDM System Over Time-Varying Channels
Anti-Jamming Transmission Stackelberg Game With Observation Errors
LMMSE Channel Estimation in OFDM Systems: A Vector Quantization Approach
Evolutionary Algorithm Based Power Coverage Optimization for Visible Light Communications
Feedback frequency synchronization for OFDM applications
SDN-Based Anchor Scheduling Scheme for Localization in Heterogeneous WSNs
Collision-free operation in ad hoc carrier sense multiple access wireless networks
Optimal RWA for Static Traffic in Transmission-Impaired Wavelength-Routed Networks
High-Throughput LDPC Decoder on Low-Power Embedded Processors
On the Stability of a Full-Duplex Aloha Network
Backhaul-Constrained Coverage Analysis of Integrated High and Low Altitude Platforms Aerial Communication System in Post-Disaster Areas
Analysis of Outage Probability and Capacity for κ-μ/η-μ Faded Channel
Improved Throughput Stabilizing Scheme for Group Paging in mMTC: A Traffic Scattering Perspective
Spatial fading correlation function of circular antenna arrays with Laplacian energy distribution
STBC MIMO-OFDM peak-to-average power ratio reduction by cross-antenna rotation and inversion
Column-Weight Three QC LDPC Codes with Girth 20
Learning-Based Autoencoder for Multiple Access and Interference Channels in Space Optical Communications
An unified numerical approach for computing the outage probability for mobile radio systems
A Quaternion-Based Approach to Construct Quaternary Periodic Complementary Pairs
Analysis of the error performance of adaptive array antennas for CDMA with noncoherent M-ary orthogonal modulation in Nakagami fading
Impersonation attacks on software-only two-factor authentication schemes
An Efficient Joint Channel-Network Decoder for Multiuser Diversity Network Codes With LDPC Coding
Few-Shot Learning UAV Recognition Methods Based on the Tri-Residual Semantic Network
Photonic CDMA Systems with Security Physical Layers
An Incremental Multicast Grouping Scheme for mmWave Networks with Directional Antennas
Maximizing Effective Energy Efficiency for Wireless-Powered BackCom Networks
Energy Efficiency Optimization in 3-D Small Cell Networks-Based Sleep Strategy
A Performance Evaluation of the Synchronized Provisioning with an Adaptive Buffer Resilience Scheme over Grid Networks
Tight Two-Dimensional Outer-Approximations of Feasible Sets in Wireless Sensor Networks
Real-Time Detection of Denial-of-Service Attacks in IEEE 802.11p Vehicular Networks
Bounds on Compression Factor Estimation in FTN Systems
Parameter Conditions for Global Stability of FAST TCP
Neural Network Based Simplified Clipping and Filtering Technique for PAPR Reduction of OFDM Signals
A Two-Dimensional Constellation Design Method for Visible Light Communications With Signal-Dependent Shot Noise
Trust Degree Based Beamforming for MISO Cooperative Communication System
A Trellis-Based Passive Beamforming Design for an Intelligent Reflecting Surface-Aided MISO System
A New Outer Bound for a Class of Interference Channels with a Cognitive Relay and a Certain Capacity Result
Dynamic Compressive Sensing-Based Multi-User Detection for Uplink Grant-Free NOMA
Ordered Statistic Decoding for Short Polar Codes
Characterization of Interrupted Brownian Noise and Performance Analysis of Receiver Mismatch
Performance Analysis of Softly Inhibitive Cellular Networks Using Poisson Mean-Field Approximation
Turbo-decoding without SNR estimation
3-D Localization With Coplanar Anchors
Satellite-Based Emitter Geolocation Using Matched Location Processing
Sparse-Aware Minimum Mean Square Error Detector for MIMO Systems
Efficient Two-Write WOM-Codes for Non-Volatile Memories
On rate control of packet transmission over fading channels
A Distance-Dependent Free-Space Optical Cooperative Communication System
Accurate DOA Estimation for Large-Scale Uniform Circular Array Using a Single Snapshot
A Recursive Puncturing Method for PAC Codes Based on the Partial Order
Outage Performance of Space-Time Network Coding With Overhearing AF Relays
Call blocking probability for heterogeneous and asymmetrical traffics in a TD-CDMA system
Joint Physical Layer and Power Resource Scheduling for GEO Satellite Internet of Things Based on Channel Conditions
Power Control for ISI Mitigation in Mobile Molecular Communication
V2X Application-Reliability Analysis of Data-Rate and Message-Rate Congestion Control Algorithms
A Novel Low-Complexity Bitwise Detection Scheme for SIMO Systems
A Segment Collision Inversion Protocol for RFID Tag Reading
Threshold-Based Selective Cooperative-NOMA
Multiplier-Free Parallel Fixed-Point Adaptive Equalizer for Real-Time Digital Coherent Communication
Some remarks regarding asymptotic packet loss in the Pareto/M/1/K queueing system
The Secrecy Outage Probability for the $i$th Closest Legitimate User in Stochastic Networks
Quality-Aware Incentive Mechanism for Social Mobile Crowd Sensing
Difference Coarray-Based Direction Finding via Covariance Fitting
Optimal Power Augmentation of LEO-NA Satellites in Power Inversion Adaptive Arrays
Super Fast Link Set-Up in Wi-Fi HaLow Networks
A Novel Group-Based Handover Authentication Scheme with Privacy Preservation for Mobile WiMAX Networks
On Power Minimization for Non-orthogonal Multiple Access (NOMA)
Optimal Traffic Scheduling in Vehicular Delay Tolerant Networks
Bandwidth Slicing to Boost Federated Learning Over Passive Optical Networks
Path Loss of RIS-Aided Spatial Modulation With On/Off Pattern
On Orthogonal Coding-Based Modulation
Analysis of SIP Transfer Delay in Multi-Rate Wireless Networks
Instantaneous Relaying: Feasibility Conditions for Interference Neutralization
Retrospective Network Coding Alignment Over K-User MIMO Y Channel
An Effective Network With Discrete Latent Representation Designed for Massive MIMO CSI Feedback
Sustainable ISAC in WLAN With Decoupled Beamforming and Power Allocation
Soft Log Likelihood Ratio Replacement for Low-Complexity Maximum-Likelihood Detection
A Cooperative D2D Content Sharing Scheme Using NOMA Under Social Ties
Source Transmit Antenna Selection for Space Shift Keying With Cooperative Relays
A Fundamental Tradeoff Between Total and Brown Power Consumption in Geographically Dispersed Data Centers
Deep Learning Based Beam Training for Extremely Large-Scale Massive MIMO in Near-Field Domain
RIS-Assisted DF Relay System Based on PAC Codes for Short Packet Communication
A Tractable Approach to Uplink Spectral Efficiency of Two-Tier Massive MIMO Cellular HetNets
Mitigation of transmit correlation for TIMO spatial multiplexing through phase rotation
TCP-Peach+: enhancement of TCP-Peach for satellite IP networks
Energy Detection Under Interference Power Uncertainty
Time Delay Characteristics Analysis of UWB Diffraction Propagation in Indoor NLOS Environment
Security Analysis of a Dynamic Program Update Protocol for Wireless Sensor Networks
Robust OFDM-Guided Joint Source-Channel Coding for Multipath High-Mobility Channels
Improvement of the Transmission Bandwidth for Indoor Optical Wireless Communication Systems Using a Diffused Gaussian Beam
NCTU SLT: a socket-layer translator for IPv4-IPv6 translation
Effect of keyholes on the symbol error rate of space-time block codes
Analysis of Modulation Order to Guarantee Real-Time Service Throughputs in OFDMA-PON
Combining OMP With a Superimposed Pilot Sparse Channel Estimation Method for Underwater Acoustic OCDM Systems
Hardware-Aware Beamspace Precoding for All-Digital mmWave Massive MU-MIMO
Optimizing Cache Placement for Heterogeneous Small Cell Networks
Ka-band land mobile satellite channel model incorporating weather effects
A New Objective Criterion and Rounding Techniques for Determining Virtual Topologies in Optical Networks
3-Color Shift Keying for Indoor Visible Light Communications
PTS with Non-Uniform Phase Factors for PAPR Reduction in OFDM Systems
Attitude-Based User Terminal Beam Pointing Using Downlink Data Bursts From Broadband Satellites
Performance Enhancement of Spectrum Sharing Cognitive Relay Networks With Outdated CSI
Enhancing the Performance of the SIC-MMSE Iterative Receiver for Coded MIMO Systems via Companding
On the performance of an adaptive GBN scheme in a time-varying channel
Integrated Sensing and Communication for Symbiotic Radio With Multiple IoT Devices
Stochastic Geometry-Based Analysis of LEO Satellite Communication Systems