Shared Abbreviations Table

Common abbreviations reused across the telecommunications, RF imaging, and scientific Python books. Chapter-local shorthand may still be introduced where needed.

Reading and Navigation

AbbreviationExpansionNotes
DDefinitionUsed in section outlines and reference badges.
TTheoremUsed in section outlines and reference badges.
EExampleUsed in section outlines and reference badges.
ExExerciseUsed in section outlines.
RRemarkUsed in section outlines and reference badges.
AAlgorithmUsed in section outlines and reference badges.
HHistorical NoteUsed in section outlines and reference badges.
WWhy This MattersUsed in section outlines for application and motivation boxes.
FFigureUsed in section outlines for static figures.
QQuizUsed in section outlines and reference badges.
!Common MistakeUsed in section outlines and references for pitfall blocks.
≡Comparison TableUsed in section outlines for comparison tables.
▶Interactive Plot / Animation / 3D SceneUsed in section outlines for interactive visual blocks.

Mathematics and Optimization

AbbreviationExpansionNotes
SVDSingular Value Decomposition
PCAPrincipal Component Analysis
KKTKarush-Kuhn-Tucker conditions
LPLinear Programming
QPQuadratic Programming
ADMMAlternating Direction Method of Multipliers
ISTAIterative Soft-Thresholding Algorithm
FISTAFast Iterative Soft-Thresholding Algorithm

Probability, Statistics, and Inference

AbbreviationExpansionNotes
PDFProbability Density Function
CDFCumulative Distribution Function
PMFProbability Mass Function
MAPMaximum A Posteriori
MLMaximum Likelihood
MMSEMinimum Mean-Squared Error
MSEMean-Squared Error
RMSERoot Mean-Squared Error

Signals and Systems

AbbreviationExpansionNotes
LTILinear Time-Invariant
FIRFinite Impulse Response
IIRInfinite Impulse Response
DFTDiscrete Fourier Transform
FFTFast Fourier Transform
STFTShort-Time Fourier Transform
DTFTDiscrete-Time Fourier Transform
PSDPower Spectral Density

Wireless Communications

AbbreviationExpansionNotes
AWGNAdditive White Gaussian Noise
SNRSignal-to-Noise Ratio
SINRSignal-to-Interference-plus-Noise Ratio
BERBit Error Rate
SERSymbol Error Rate
CSIChannel State Information
MIMOMultiple-Input Multiple-Output
MISOMultiple-Input Single-Output
SIMOSingle-Input Multiple-Output
OFDMOrthogonal Frequency-Division Multiplexing
OFDMAOrthogonal Frequency-Division Multiple Access
SC-FDMASingle-Carrier Frequency-Division Multiple Access
LTELong Term Evolution
NRNew Radio
3GPP3rd Generation Partnership Project
ULAUniform Linear Array
UPAUniform Planar Array
UCAUniform Circular Array

RF Imaging and Inverse Problems

AbbreviationExpansionNotes
CTComputed Tomography
MRIMagnetic Resonance Imaging
FOVField of View
PSFPoint Spread Function
TVTotal Variation
CSCompressed Sensing
FBPFiltered Backprojection
SARSynthetic Aperture Radar

Scientific Python and Computing

AbbreviationExpansionNotes
APIApplication Programming Interface
CLICommand-Line Interface
CPUCentral Processing Unit
GPUGraphics Processing Unit
RAMRandom Access Memory
CSVComma-Separated Values
JSONJavaScript Object Notation
YAMLYAML Ain't Markup Language
HDF5Hierarchical Data Format version 5