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

EURASIP Journal on Wireless Communications and Networking

Table 6 SNR thresholds for OSTBC system obtained from descending search method (M = N = 2, $δ_{0} = 1 0^{- 3}$ )

Average SNR	BPSK	QPSK	16-QAM	64-QAM
0	6.36	9.62	16.56	22.58
1	6.22	9.56	16.55	22.58
2	6.04	9.47	16.53	22.57
3	5.82	9.36	16.51	22.57
4	5.57	9.22	16.49	22.56
5	5.35	9.02	16.45	22.56
6	5.23	8.75	16.41	22.55
7	5.36	8.36	16.36	22.53
8	5.91	7.74	16.29	22.52
9	×	6.62	16.20	22.50
10	×	1.95	16.08	22.47
11	×	$- \infty$	15.92	22.44
12	×	$- \infty$	15.71	22.40
13	×	$- \infty$	15.40	22.34
14	×	$- \infty$	14.95	22.27
15	×	$- \infty$	14.23	22.18
16	×	$- \infty$	12.87	22.06
17	×	×	$- \infty$	21.90
18	×	×	$- \infty$	21.67
19	×	×	$- \infty$	21.36
20	×	×	$- \infty$	20.89
21	×	×	$- \infty$	20.10
22	×	$- \infty$	13.55	18.36
≥23	×	×	×	$- \infty$