Algorithm	16-QAM		64-QAM
Algorithm	Visited nodes	List size	Visited nodes	List size
MLD [9]	69,904	65,536	NR	NR
QRM [9]	784	16	5824	30
LFSD [9]	176	64	704	64
PCA [9]	88	28	292	82
BCA [9]	88	28	292	82
QRM-BCA [9]	808	28	5860	48
PCA-BCA [9]	112	40	328	100
CELLA	34	16	136	32