Joint Adaptive Transmission and Switched Diversity Reception - Adaptive Signal Processing in Wireless Communications - page 167

8

7

6

5

4

3

L = 2
L = 4
L = 8
L = 16
Option 1
Option 2

2

1

0

0 5 10 15 20 25 30 35

Average channel SNR [dB]

FIgure 6.4 Average spectral efficiency of SEC-based minimum estimation schemes for both
options and different numbers of antennas L .

10 0

L = 2
L = 4
L = 8
L = 16
Option 1
Option 2

10 −1

10 −2

10 −3

10 −4

10 −5

10 −6

0 5 10 15 20 25 30 35

Average channel SNR [dB]

FIgure 6.5 Average error rate of SEC-based minimum estimation schemes for both options
and different numbers of antennas L .

again comes at the cost of the violation of the BER constraint, as shown in Figure 6.5. In
Figure 6.5, we plot the average error rate of the SEC-based minimum estimation scheme
with both options and different numbers of receive antenna L . It is clear that option 1
constantly violates the target BER requirement over the low- to medium-SNR region,