LEO	Low Earth orbit
MEO	Medium Earth orbit
GEO	Geostationary orbit
UT	User terminal
OBP	On-board processor
CoMSat	Coordinated multiple-satellite
CCI	Co-channel interference
SE	Spectral efficiency
CSI	Channel state information
iCSI	Instantaneous channel state information
sCSI	Statistical channel state information
AoD	Angle of departure
LoS	Line-of-sight
MIMO	Multiple-input multiple-output
mMIMO	Massive multiple-input multiple-output
UPA	Uniform planar array
DBF	Digital beamforming
DFT	Discrete Fourier transform
FFT	Fast Fourier transform
FFR	Full-frequency reuse
MSE	Mean square error
LP	Linear precoding
WSR	Weighted sum rate
WMMSE	Weighted minimum mean square error
sWMMSE	sCSI-based weighted minimum mean square error
MF	Matched filter
ZF	Zero-forcing
RZF	Regularized zero-forcing
SINR	Signal-to-interference-plus-noise ratio
SLNR	Signal-to-leakage-plus-noise ratio