[Retracted] Performance Evaluation of Spectral Efficiency for Uplink and Downlink Multi-Cell Massive MIMO Systems

Table 3

Acronyms Representations.

Symbols	Description
MMSE	Minimum mean-squared error
ZF	Zero-forcing
RZF	Regular zero-forcing
MRC	Maximal ratio combining
LS	Least-Square
SE	Spectral efficiency
MIMO	Massive multiple-input and multiple-output
BSs	Base stations
UL	Uplink
DL	Uplink
BER	Optimal bit error rate
NSE	Neumann series expansion
ML	Maximum likelihood
EE	Energy efficiency
FD	Full-duplex
EW	Element wise