block diagram of communication system

15:13

7:25

1:32

4:11

4:43

1:35:50

4:37

4:28

29:47

2:13

4:03

13:57

4:56

19:25

کوتاه

7:36

11:35

6:11

12:41

1:50

4:52

7:26

3:18

3:42

3:32

1:43

3:50

1:16

4:01

1:37

کوتاه

1:37

1:23

20:18

1:25

2:04

23:44

3:54

18:28

19:49