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Table 6 The average number of RF chains required for DRL-EE and DRL-SE, respectively, with different trade-off factors \(\alpha\)

From: Deep reinforcement learning-based beam training with energy and spectral efficiency maximisation for millimetre-wave channels

\(\alpha\)

0.1

0.3

0.5

0.7

0.9

(a) DRL-EE

DRL

3.0

6.5

6.6

6.8

7.0

MAB

3.3

5.9

6.7

6.9

7.1

MR

3.0

6.0

6.8

7.1

7.3

RAND

6.1

A

3.0

B

6.8

C

7.3

D

7.4

(b) DRL-SE

DRL

3.0

6.4

9.3

9.8

10.5

MAB

3.5

6.5

8.8

9.5

9.9

MR

3.0

6.6

8.9

9.4

10.1

RAND

8.3

A

3.0

B

9.4

C

10.1

D

10.5