Abbreviations

Description

AF

Amplify-and-forward

AFDM

Affine Frequency Division Multiplexing

AWGN

Additive White Gaussian Noise

BER

bit error rate

BPSK

Binary phase-shift keying

CP-OFDM

Cyclic Prefix, Orthogonal Frequency Division Multiplexing

DFT-S-OFDM

discrete Fourier transform spread orthogonal frequency division multiplexing

DFT-DSSS

discrete Fourier transform-direct sequence spread spectrum

ML

Machine learning

CE-OFDM-CDMA

onstant Envelope OFDM--CDMA

M2M

Machine to machine

CFO

carrier frequency offset

GFDM

generalized frequency division multiplexing

IOT

Internet of things

W-OFDM

Wide-Band Orthogonal Frequency Multiplexing (W-OFDM)

IM

index modulation

mMTC

Massive-machine-type connectivity

UFMC

universal filtered multi-carrier

OFDM

Zero-forcing

OTFS

orthogonal time frequency space