yusuke1997/dblp-id-title huggingface dataset:
An enhanced handoff control scheme for multimedia traffic in cellular networks
Minor Probability Events' Detection in Big Data: An Integrated Approach With Bayes Detection and MIM
Layered Offset Hierarchical QAM Modulation for Intersymbol Interference Reduction
Solutions to the Computer Networking Challenges of the Distribution Smart Grid
Movable-Antenna Array Enhanced Beamforming: Achieving Full Array Gain With Null Steering
Packet Loss Reduction During Rerouting
Two-Step User Pairing for OFDM-Based Cooperative NOMA Systems
Improved QRD-QLD Algorithm for Low Complexity MIMO Decoding
Traffic Pattern Adaptive Hybrid Electrical and Optical Switching Network for HPC System
Security evaluation of certain broadcast encryption schemes employing a generalized time-memory-data trade-off
Ergodic Capacity Analysis for Cooperative Ambient Communication System Under Sensitivity Constraint
A Hybrid Jamming Detection Algorithm for Wireless Communications: Simultaneous Classification of Known Attacks and Detection of Unknown Attacks
Optimal allocation of sensing time between two primary channels in cognitive radio networks
Strengths and Weaknesses of the ETSI Adaptive DCC Algorithm: A Proposal for Improvement
Wideband Precoding for MIMO-OFDM Systems With Per-Antenna Power Constraints
On the Construction of Regular QC-LDPC Codes With Low Error Floor
Cost-Aware Resource Allocation for Hybrid Multiple Access in Cell-Free MIMO System
Stochastic Geometry Analysis of Coordinated Beamforming Small Cell Networks With CSI Delay
An Iterative Joint Scheduling and Hybrid Beamforming Design for mmWave MIMO Systems
An exact framework for performance analysis of IR-UWB systems: the need for approximations
A novel OFDM receiver with second order polynomial Nyquist window function
Multiuser detection for DS-CDMA systems using evolutionary programming
Signal Bandwidth Impact on Maximum-Minimum Eigenvalue Detection
Practical determination of impulse sample power boosting factor in impulse postfix OFDM systems
Channel Prediction Based Scheduling for Data Dissemination in VANETs
Enhancement of QoS differentiation over IEEE 802.11 WLAN
Joint sensing time and power allocation in cooperatively cognitive networks
Robust Adaptive Margin for ACM in Satellite Links at EHF Bands
Coverage Analysis of Downlink NOMA-Enabled Dense Networks With ISP-Based User Ordering
Exact Outage Analysis of Multiple-User Downlink With MIMO Matched-Filter Precoding
Construction of High-Performance Array-Based Non-Binary LDPC Codes With Moderate Rates
Dual-Hop MIMO Amplify-and-Forward Relay Channel Capacity with Keyhole Effect
Secrecy Outage for Wireless Sensor Networks
Performance Analysis of Finite-Length Spatial-Temporal Network Coding
Tuning of 802.11e network parameters
A Novel Rate-Adaptive Distributed Source Coding Scheme Using Polar Codes
Independent acknowledgement assembly and its extended mechanisms to enhance TCP performance in OBS networks
Fairness of User Clustering in MIMO Non-Orthogonal Multiple Access Systems
Near-Capacity Adaptive Analog Fountain Codes for Wireless Channels
Performance Analysis of an Opportunistic Relay Selection Protocol for Multi-Hop Networks
Toward Wide-Frequency-Range Direction Finding With Support Vector Regression
Sum-Networks: Min-Cut = 2 Does Not Guarantee Solvability
OMP-Based Channel Estimation With Dynamic Grid for mmWave MIMO Positioning Systems
A spanning tree-based QoS aggregation algorithm in hierarchical ASON
A Novel Two-Stage Beam Selection Algorithm in mmWave Hybrid Beamforming System
Closed-Form BER Expressions of QPSK Constellation for Uplink Non-Orthogonal Multiple Access
Robust Power-Splitting SWIPT Beamforming for Broadcast Channels
Optimum asymmetric constellation design for trellis-coded modulation over gaussian channels
Optimum Placement of UAV as Relays
Joint Noise Model Learning and Source Localization With Unknown Transmit Power
Dispersion Matrix Optimization for Space-Time Shift Keying
Average channel capacity for generalized fading scenarios
Energy-Efficient Resource Allocation for LTE-A Networks
Blind Modulation Classification over Fading Channels Using Expectation-Maximization
An Enhanced End-to-End Transparent Clock Mechanism with a Fixed Delay Ratio
Geo-location in urban areas using signal strength repeatability
Delay-Aware and Energy-Efficient Resource Allocation for Reconfigurable Intelligent Surfaces
Sphere Decoding for MIMO Systems with Newton Iterative Matrix Inversion
An Enhanced Random Access With Preamble-Assisted Short-Packet Transmissions for Cellular IoT Communications
Second-Order Statistics-Based Blind Synchronization Algorithm for Two Receive-Antenna Orthogonal STBC Systems
Secrecy Performance of an Artificial Noise Assisted Transmission Scheme With Active Eavesdropper
Reconfigurable Intelligent Surface Assisted Secret Key Generation in Quasi-Static Environments
Modeling of the TOA-based distance measurement error using UWB indoor radio measurements
Continuous Message Transmission for Covert Communication
QoS-Based Rate Control Scheme for Non-Elastic Traffics in Distributed Networks
Error rate performance of coded free-space optical links over strong turbulence channels
Comments on "Interference-Based Capacity Analysis of Vehicular Ad Hoc Networks"
Joint Symbol Detection for Multi-Receiver Without Signal Synchronization and Array Alignment
Deep Reinforcement Learning for Joint Beamwidth and Power Optimization in mmWave Systems
Optimal capacity of p-persistent CSMA protocols
UniQGAN: Unified Generative Adversarial Networks for Augmented Modulation Classification
Protecting SIP server from CPU-based DoS attacks using history-based IP filtering
Joint Receiver Design for Integrated Sensing and Communications
Efficient Tree-Traversal Strategy for Soft-Output MIMO Detection Based on Candidate-Set Reorganization
Low Reliable and Low Latency Communications for Mission Critical Distributed Industrial Internet of Things
Optimality of Orthogonal Access for One-Dimensional Convex Cellular Networks
Secrecy-Enhancing Scheme for Spatial Modulation
Selective HARQ Transceiver Design for OFDM System
Lightning: A High-Efficient Neighbor Discovery Protocol for Low Duty Cycle WSNs
Maximum size matching is unstable for any packet switch
Analysis of Link Lifetime With Auto-Correlated Shadowing in High-Speed Railway Networks
Low Complexity Zeroforcing Precoder Design Under Per-Antenna Power Constraints
RF Energy Transfer for Cooperative Networks: Data Relaying or Energy Harvesting?
Service Function Chains Deployment for 5G Slice With Bandwidth Coupling
BER Analysis of Threshold Digital Relaying Schemes over Log-Normal Fading Channels
Breathe to Save Energy: Assigning Downlink Transmit Power and Resource Blocks to LTE Enabled IoT Networks
Spectrum Broadening Due to Phase Noise Interaction in Cognitive Radio Systems
Message-Embedded Random Access for Cellular M2M Communications
Hamming Distortion Based Secrecy Systems: To Foil the Eavesdropper With Finite Shared Key
Beam-Domain-Based Pilot Assignment for Energy Efficient Cell-Free Massive MIMO
Dynamic routing and wavelength assignment for limited-range wavelength conversion
Formation Optimization for AUV Localization With Range-Dependent Measurements Noise
Optimal Hexagonal Constellations Based on a Two-Dimensional Signal Space for Peak-Limited Intensity-Modulated Channels
Design of RIS-Aided mMTC+ Networks for Rate Maximization Under the Finite Blocklength Regime With Imperfect Channel Knowledge
Semantic Communication System Based on Meta-Learning Framework
Performance Analysis of a Biologically Inspired Collective Gradient Detection Method for a Bio-Nanomachine Cluster
Are there so many sons per node in a wireless sensor network data aggregation tree?
Power Optimization With BLER Constraint for Wireless Fronthauls in C-RAN
Multi-Permutation Codes Correcting a Single Burst Unstable Erasure
Supervised Contrastive CSI Representation Learning for Massive MIMO Positioning
A distributed on-off amplify-and-forward protocol for the fading parallel relay channel
Covert Communications When the Warden Does Not Know the Background Noise Power
DeepAntiJam: Stackelberg Game-Oriented Secure Transmission via Deep Reinforcement Learning
Zech Logarithmic Decoding of Triple-Error-Correcting Binary Cyclic Codes
Blind Information Reconciliation With Polar Codes for Quantum Key Distribution
A Generalization of Shift-Window Approach for UWB ISI Reduction
Spatial and temporal correlation of the interference in ALOHA ad hoc networks
Hardware-Efficient Signal Detection for Ambient Backscattering Communications
A Downstream Power Back-Off Procedure for Mixed FTTC and FTTDp Scenarios
Performance Analysis of Outdoor THz Links Under Mixture Gamma Fading With Misalignment
End-to-End Performance for SCF-Based Vehicular Routing Over Multiple Communication Gaps
A Low Complexity Sub-Optimal Approach to Dynamic Spectrum Allocation for White Space Devices With Heterogeneous Bandwidth Requirements
Robust Cross-SCORE Algorithm Against Bit Transitions for GPS Interference Suppression
Deep Reinforcement Learning With Discrete Normalized Advantage Functions for Resource Management in Network Slicing
MDP-Based Model for Interest Scheduling in IoT-NDN Environment
Mobility-Aware User Association in Uplink Cellular Networks
A DOA Estimation Method for UCA Based on Orthogonal Subspace Compensation
Age Minimization in Outdoor and Indoor Communications With Relay-Aided Dual RIS
ProCCA: Protective Clear Channel Assessment in IEEE 802.11 WLANs
Q-BT: Queue-Based Burst Transmission Over an Asynchronous Duty-Cycle MAC Protocol
Power and Spectral Efficiency of Multi-Pair Massive Antenna Relaying Systems With Zero-Forcing Relay Beamforming
Intelligent Reflecting Surface Enhanced Wireless Communications With MultiHead-Attention Sparse Autoencoder-Based Channel Prediction
Reviewers and Editors Appreciation 2019
Uplink Sum-Rate Maximization for Pinching Antenna-Assisted Multiuser MISO Communications
QC-LDPC Codes With Large Column Weight and Free of Small Size ETSs
ID Routing Mechanism for Opportunistic Multi-Hop Networks
Balanced Gray Codes With Flexible Lengths
Cover positions and decoding complexity of the Golay code, using an extended Kasami algorithm
Unsupervised Learning-Based Joint Active and Passive Beamforming Design for Reconfigurable Intelligent Surfaces Aided Wireless Networks
Performance of Regenerative Relay-Assisted D2D Communication in Mixed Fading Channels
A New SLNR-Based Linear Precoding for Downlink Multi-User Multi-Stream MIMO Systems
Priority enabled dynamic traffic grooming
Analysis of Blocking Probability of Multi-Class OBS With General Burst Size Distribution
User Assignment Algorithms for Energy-Efficiency-Aware Multiple Access Systems
Analog Digital Belief Propagation
Threshold of LDPC-coded BICM for Rayleigh fading
Exact Bit Error-Rate Analysis of Two-User NOMA Using QAM With Arbitrary Modulation Orders
Capacity Maximizing Adaptive Power Splitting Protocol for Cooperative Energy Harvesting Communication Systems
Multi-In-Multi-Out Neural Network for Joint DOA Estimation and Automatic Modulation Classification
Secrecy Analysis in SWIPT Systems Over Generalized- $K$ Fading Channels
Quality-Oriented Adaptive Forwarding for Wireless Relaying
Achievable Rate and Fairness in Coordinated Base Station Transmission
An Efficient Stopping Criterion for Turbo Product Codes
Decoding LDPC Codes With Locally Maximum-Likelihood Binary Messages
Gossip-Based Distributed Tracking in Networks of Heterogeneous Agents
DOD and DOA Estimation in Bistatic Non-Uniform Multiple-Input Multiple-Output Radar Systems
Chunk-Based Resource Allocation in Distributed MISO-OFDMA Systems with Fairness Guarantee
LDPCA Code Construction for Slepian-Wolf Coding
Sparse chip equalizer for DS-CDMA downlink receivers
On the stopping distance of finite geometry LDPC codes
On the Indoor VLC Link Evaluation Based on the Rician K-Factor
Optimization of a Relay-Assisted Link With Buffer State Information at the Source
A control theoretic approach to stabilizing queues in large-scale networks
Optimization of Rate Fairness in Multi-Pair Wireless-Powered Relaying Systems
Efficient Trajectory Planning and Dynamic Resource Allocation for UAV-Enabled MEC System
Performance Analysis of Space Shift Keying Modulation With Imperfect Estimation in the Presence of Co-Channel Interference
Implications of power control and successive interference cancellation on indoor DS-CDMA system deployment and performance
Power Minimization for Integrated Sensing, Communication, and Power Transmission Systems
Channel-Based Multi-Dimensional Set Partitioning for MIMO Reduced-State Sequence Estimation
SOSP: an efficient multicast fault isolation scheme for multi-source sessions
Minimal State Non-Coherent Symbol MAP Detection of Continuous-Phase Modulations
Optimal Power Allocation for Artificial Noise in a Poisson Interference Field
Handover for Multi-Beam LEO Satellite Networks: A Multi-Objective Reinforcement Learning Method
Sensing Capacity for Integrated Sensing and Communication Systems in Low-Altitude Economy
Semi-Random Access in Small Cells With User Priority
Trade-off of multiplexing streams in MIMO broadcast channels
Optimal BER-Balanced Combining for Weighted Energy Detection of UWB OOK Signals
Constraint-Driven Type-2 Fuzzy C-Means Clustering and Step-Wise Gossip for Fusion Transmission in Distributed Networks
Performance of two-hop regenerative relay network under correlated nakagami-m fading at multi-antenna relay
ACI susceptibility of reduced-state decoding for CPM
Analytical Investigation of Long-Time Diffusion Dynamics in a Synaptic Channel With Glial Cells
Multi-Objective Optimization for UAV-Enabled Wireless Powered IoT Networks: An LSTM-Based Deep Reinforcement Learning Approach
Dynamic signature assignment for direct sequence CDMA systems
Low-Complexity Power Allocation for Energy Efficiency Maximization in DAS
GNSS Carrier Phase Tracking With Discrete Wavelet Transform Filtering Under Ionospheric Scintillation
On the Achievable Performance of Nonlinear MIMO Systems
An empirical real-time approximation of waiting time distribution in MMPP(2)/D/1
Tight Bounds for Ergodic Capacity of Dual-Hop Fixed-Gain Relay Networks under Rayleigh Fading
Joint Security-Latency Design for Short Packet-Based Low-Altitude Communications
On the Symbol Error Probability of Multihop Parallel Relay Networks
Call Admission Control for Non-Standalone 5G Ultra-Dense Networks
A Reliable Spectrum Sensing Method Based on Deep Learning for Primary User Emulation Attack Detection in Cognitive Radio Network
Dynamic spreading code selection method for PAPR reduction in OFDM-CDMA systems with 4-QAM modulation
Average Bit Error Probability of Binary Coherent Signaling over Generalized Fading Channels Subject to Additive Generalized Gaussian Noise
Alternating Iterative Adaptive Approach for DOA Estimation via Acoustic Vector Sensor Array Under Directivity Bias
Sector Scanning Attempts for Non-Isolation in Directional 60 GHz Networks
Joint Optimization of Anchor Deployment and Power Allocation in Wireless Network Localization
Performance comparison of switch architectures with shareable parallel memory modules
Unitary signal constellations for differential space-time modulation
Hermite-Gaussian Nonlinear Spectral Carriers for Optical Communication Systems Employing the Nonlinear Fourier Transform
Wireless Universal Adversarial Attack and Defense for Deep Learning-Based Modulation Classification
Dissecting OFDM: the independent roles of the cyclic prefix and the IDFT operation
Expected interference in wireless networks with geometric path loss: a closed-form approximation
Improved signal constellations for differential unitary space-time modulations with more than two transmit antennas
Equal Gain Combining-Based Maximum Likelihood Detector for FFH/MFSK Systems
Reduced ICI in OFDM systems using the "better than" raised-cosine pulse
A Relaying Scheme Based on Diagonalization for Multi-Relay Symmetric MIMO Communication Networks
Secrecy Energy Efficiency Maximization for ARIS-Assisted Multiuser MISO Systems
A Reputation Incentive Mechanism Based Offloading Strategy for AAV-Assisted Edge Computing Systems
A Cooperation-Aware Routing Scheme for Fast Varying Fading Wireless Channels
Temperature-Aware Density Optimization for Low Power Wireless Sensor Networks
A Computationally Efficient Direct Position Determination Algorithm Based on OFDM System
Low-Complexity PAPR Reduction in DZT-OTFS System Through Clipping and Logarithmic Rooting Companding
Using Stuffed Quadratic Congruence Codes for SAC Labels in Optical Packet Switching Network
An Exact Formula for the Pull-Out Frequency of a 2nd-Order Type II Phase Lock Loop
Arraymetrics: Authentication Through Chaotic Antenna Array Geometries
Handoff Decision Using a Kalman Filter and Fuzzy Logic in Heterogeneous Wireless Networks
Pilot Sequences Aided Spatial Modulation for Grant-Free Multiple Access Systems
RIS-Assisted 6G Wireless Communications: A Novel Statistical Framework in the Presence of Direct Channel
Augmented Quaternion ESPRIT-Type DOA Estimation With a Crossed-Dipole Array
Space-time trellis codes for 4-PSK with three and four transmit antennas in quasi-static flat fading channels
On Estimating a Counter From Its Noisy Successive Instances
Clock Skew Estimation Using Kalman Filter and IEEE 1588v2 PTP for Telecom Networks
On Allocation of Systematic Blocks in Coded Distributed Computing
SDN-Assisted Slow HTTP DDoS Attack Defense Method
Taxing the Queue: Hindering Middleboxes From Unauthorized Large-Scale Traffic Relaying
Joint Transceiver Beamforming Design for End-to-End Optimization in Full-Duplex MIMO Relay System With Self-Interference
Peer-to-Peer Distribution on Asymmetric Channels
OOK Performance for Terrestrial FSO Links in Turbulent Atmosphere with Pointing Errors Modeled by Hoyt Distributions
Throughput Analysis of Interference Cancellation-Based Random Access With Feedback
Optimal Brightness-Rate Control using VR-MPPM and its Spectral Analysis for VLC System
Joint Beamforming and Reflection Design for RIS Assisted Bistatic Backscatter Networks With Practical Phase Shift and Amplitude Response
Comparison and Optimization of Enumerative Coding Techniques for Amplitude Shaping
An Improved Method of Moments Estimator for TOA Based Localization
Blue-Shift Effect-Based Positioning for Multi-Color VLC
Some Preamble Design Aspects in CP-OFDM Systems
Generating realistic ISP-level network topologies
Asymmetric power allocation to improve convergence rate of iterative receivers with soft cancellation
An Artificial Radio Frequency Fingerprint Embedding Scheme for Device Identification
Fluid Antenna Enabled Space-Time Block Coding With Achievable Rate Optimization
A Fast Constrained Sphere Decoder for Ill Conditioned Communication Systems
Universal Encoding Scheme for General Zig-Zag Network
Energy Efficiency and Spectral Efficiency Tradeoff in Interference-Limited Wireless Networks
Spatially Correlated SU MIMO-OTSM: Performance Analysis
Maximum Likelihood SNR Estimation of Hyper Cubic Signals Over Gaussian Channel
New Constructions of Z-Complementary Code Sets Based on Generalized Column Orthogonal Matrices
A cross-layer optimization of IEEE 802.11 MAC for wireless multihop networks
Weighted Bandwidth-Power Product Optimization in Downlink Femtocell Networks
Effects of directional antennas at the base station on the Doppler spectrum
Adaptive Interference Suppressing Multi-User ZF in Cluster-Centric Cell-Free Massive MIMO Systems
Max-Min Fairness of Cooperative RSMA for Aggregated VLC/RF Systems
An UWB Channel Impulse Response De-Noising Method for NLOS/LOS Classification Boosting
Non-Coherent Spatial Modulation and Optimal Multi-Ring APSK Constellation Design
RFFI Protocols Using Antenna Mutual Coupling and Power Amplifier Nonlinear Memory Effects
DARNet: Deep Attention Receiver Network for 5G
Soft-Decision Decoding of Permutation Block Codes in AWGN and Rayleigh Fading Channels
A simple information-theoretic analysis of clustered sensor networks with decentralized detection
List-Based Optimization of Proximal Decoding for LDPC Codes
A Tight Upper Bound on Channel Capacity for Visible Light Communications
Optimal tracking interval for predictive tracking in wireless sensor network
Robust Weighted Subspace Fitting for DOA Estimation via Block Sparse Recovery
Uplink Modeling of K-Tier Heterogeneous Networks: A Queuing Theory Approach
On the Linear Behaviour of the Throughput of IEEE 802.11 DCF in Non-Saturated Conditions
Optimal Buffer-Aided Relaying With Imperfect CSI
Performance Analysis and Optimization of Caching Placement in Heterogeneous Wireless Networks
Secure Beamforming for MIMO-NOMA-Based Cognitive Radio Network
Virtual Topology for LEO Satellite Networks Based on Earth-Fixed Footprint Mode
Performance of Joint Source-Channel Coding Based on Protograph LDPC Codes over Rayleigh Fading Channels
Comparison Between TDMA and Random Multiple-Access Energy-Harvesting Networks Under Security Constraints
Sum Rate Maximization of an MIMO Two-Way Relay System Using MSE Duality
3-D Position Location in Ad Hoc Networks: A Manhattanized Space
HTTP/2-Based Adaptive Streaming of HEVC Video Over 4G/LTE Networks
Artificial-Noise-Aided Optimal Beamforming in Layered Physical Layer Security
Improved DFT Algorithm for 2D DOA Estimation Based on 1D Nested Array Motion
Secrecy Capacity of IRS-Assisted Terahertz Wireless Communications With Pointing Errors
A Simple Upper Bound of the Gaussian Q-Function with Closed-Form Error Bound
An Analytical Study of Control Plane Failures Impact on GMPLS Ring Optical Networks
A new reliability measure for telecommunication networks
Grouping-Based Channel Estimation Scheme for IRS-Assisted Wireless Communications Network
Network Survivability for Multiple Probabilistic Failures
Symbol error rate of the dm-mpsk under the influence of jamming signals
An Efficient Procedure for Bilayer-Expurgated LDPC Codes Design in Cooperative Relay Channels
Outage probability of cellular CDMA systems with space diversity, Rayleigh fading, and power control error
A Frequency Modulation Technique for SNR Improvement in Backscatter Radios
Non-violation set scheduling for two-dimensional optical MEMS switches
Joint Waveform and Phase Shift Design for RIS-Assisted Integrated Sensing and Communication Based on Mutual Information
Bit-level stopping of turbo decoding
Timing Channels in Bluetooth Low Energy
A Protection Method Based on Message Identification and Flow Monitoring for Managing the Congestion Arising From Network Attacks on Smart Substation
Joint Relay Selection and Power Allocation for Two-Way Relaying with Physical Layer Network Coding
Mixed Placement of 1R/2R/3R Regenerators in Translucent Optical Networks to Achieve Green and Cost-Effective Design
Blind Signal PSK/QAM Recognition Using Clustering Analysis of Constellation Signature in Flat Fading Channel
Artificial Noise-Aided Secure Generalized Spatial Modulation for Multiuser Transmission
Outage Probability Analysis of Non-Orthogonal Multiple Access in Cloud Radio Access Networks
Extended Versions of Polynomial Remainder Codes and Chinese Remainder Codes
Spreading code construction for CDMA
Non-Orthogonal Multiple Access With Coordinated Direct and User-Assisted Transmission
Distortion Minimization in Wireless Sensor Networks With Energy Harvesting
Fractional Programming Based Optimization Techniques for RIS-Assisted SWIPT-IoT System
Robust Distributed Information-Sharing Algorithms for Mitigating Wireless Link Impairments
A new noncoherent UWB impulse radio receiver
Symbol-based turbo codes
DQN-Based Predictive Spectrum Handoff via Hybrid Priority Queuing Model
MRMAC: Medium Reservation MAC Protocol for Reducing End-to-End Delay and Energy Consumption in Wireless Sensor Networks
Cooperative Rate-Splitting Multiple Access in Heterogeneous Networks
Some Classes of Mixed Alphabet Codes With Few Weights
Design of wide-sense nonblocking multicast ATM switches
An Enhanced Probabilistic Computation Method for the Weight Distribution of Polar Codes
Two-Tier Multi-Rate Slotted ALOHA for OWC/RF-Based IoT Networks
Transient Solutions of Sliding Frame R-ALOHA for Real-time Ad Hoc Wireless Networks in a Fading Environment
Approximation to Distribution of Product of Random Variables Using Orthogonal Polynomials for Lognormal Density