EURASIP Journal on Wireless Communications and Networking

Table 1 Comparison of ML decoding complexities of STBCs for 4 × 2 MIMO transmission

From: Achieving low-complexity maximum-likelihood detection for the 3D MIMO code

STBC	ML decoding complexity
	Any QAM	Square QAM
New 3D MIMO	O(M⁶)	O(M^4.5)
DjABBA [12]	O(M⁷)	O(M⁶)
Perfect code (two-layer) [24]	O(M⁶)	O(M^5.5)
BHV [7]	O(M⁶)	O(M^4.5)
EAST [9]	O(M⁵)	O(M^4.5)
Srinath-Rajan [8]	O(M⁵)	O(M^4.5)
IFS [11]	O(M⁵)	O(M^4.5)

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