概要信息：

2005  2006    
 
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_______ _________ ______ 
 
        
 
       
 
T F 2 22  
 
1 2 3 4 5 6 7 8 9 10 11 
           
 
 
2. FDM  
 
4. 2FSK 2bit/s.Hz  
 
 
7.  
8. 2PSK 2ASK  
9. TS T TS=kT(k
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10.  
11.  
 
 3 18  
 
 2 3 4 5 6 
      
1 -2V -1V 1V 2V 1/8 1/4
1/8 1/2  
   A 2.25  
   B 1.75  
   C 1  
   D 2  
 
2  
A                          
B       
C                           
D  
 
3 SSB FM 60
4kHz FM 400KHz
 
A 640KHz                          
B880kHz  
C1040kHz      
D1280kHz  
 
4 2V
0V  
   A 0V  
   B 1V  
   C 2V  
D -2V 
 
5 2DPSK  
   A 2DPSK  
   B 2DPSK 2PSK  
   C 2DPSK 2PSK  
D 2DPSK 2PSK  
 
 
 
 
   








































 
 
 
6 1500Hz

A 3000bit/s  
    B 2000bit/s  
    C 1000bit/s  
D 500bit/s  
 
 
5kHz 100kHz
10KW 20dB
Pn(f)=0.1h10ÿ3W/Hz
10kHz      
  
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0 
 
H( ) 
1 
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0/2 - 0/2 -3 0/2 
 
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(1) (t)  
(2) O (t) RO( )  
(3) O (t) PO( )  
 
 
 
1  
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Rb=100bit/s FSK 1100Hz 1200Hz
0.05­V 50¡
n0=kT0 k k=1.38h10-23JK-1
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(1) BT        
(2) BR        
(3) Pe       
 
 
 
 
 
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WC  
 
 
 
      
 
             4   
 
T F 2 22  
 
1 2 3 4 5 6 7 8 9 10 11 
T T T F F T T F F T T 
  3 18  
 
 2 3 4 5 6 
B A D B D B 
 
 
(1) 
 
 
 
 
 
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