A Power-Efficient Soft-Output Detector for Spatial-Multiplexing MIMO Communications

Table 1

Mean and variance of the distribution of the number of the visiting branches for each layer under SD ordering and FSD ordering at SNR = 10 dB in 4×4 MIMO 16-QAM System.

Layer	SD ordering		FSD ordering
	Mean	Variance	Mean	Variance
4	2.875270419	6.793185738	4.744884884	13.61550639
3	2.096801078	3.001800963	1.627991568	1.339530374
2	1.621236302	1.412882193	1.406256828	0.75118707
1	1.283783145	0.648927997	1.20332918	0.384272589