Dynamic rate-adaptive MIMO mode switching between spatial multiplexing and diversity

EURASIP Journal on Wireless Communications and Networking

Table 3 SNR thresholds for the spatial multiplexing system with ZF receiver from lagrange multiplier method (M = N = 2, $δ_{0} = 1 0^{- 3}$ )

Average SNR	BPSK	QPSK	16-QAM	64-QAM
0	6.48	10.07	16.83	23.15
1	6.40	10.00	16.75	23.08
2	6.31	9.92	16.67	23.00
3	6.20	9.82	16.57	22.91
4	6.09	9.72	16.47	22.81
5	5.96	9.61	16.36	22.70
6	5.82	9.49	16.23	22.58
7	5.68	9.37	16.11	22.46
8	5.54	9.24	15.98	22.34
9	5.38	9.11	15.84	22.21
10	5.21	8.96	15.69	22.06
11	5.03	8.80	15.53	21.91
12	4.88	8.68	15.40	21.79
13	4.76	8.57	15.30	21.69
14	4.67	8.50	15.22	21.62
15	4.61	8.45	15.17	21.57
16	4.54	8.39	15.11	21.51
17	4.46	8.32	15.04	21.45
18	4.37	8.24	14.96	21.37
19	4.29	8.18	14.89	21.31
20	4.21	8.11	14.82	21.25
21	4.14	8.05	14.76	21.19
22	4.06	7.98	14.69	21.13
23	3.95	7.89	14.60	21.04
24	3.81	7.78	14.48	20.93
25	3.63	7.63	14.33	20.79
26	3.40	7.44	14.14	20.61
27	3.12	7.21	13.91	20.40
28	2.78	6.93	13.63	20.14
29	2.39	6.62	13.32	19.85
30	1.93	6.25	12.96	19.53
31	1.39	5.83	12.54	19.15
32	0.76	5.34	12.07	18.73
≥33	N. A.	N. A.	N. A.	N. A.