Multiplexed binary offset carrier

Multiplexed binary offset carrier (MBOC) modulation is a modulation design proposed for <a href="/facts/Galileo_(satellite_navigation)/sPyWl594">Galileo</a> and modernized <a href="/facts/Global_Positioning_System/DKVLnzF3">GPS</a> satellite navigation signals, which combines a sine <a href="/facts/Binary_offset_carrier/2pNFPFYg">binary offset carrier</a> SinBOC(1,1) signal with a SinBOC(6,1) signal, either via weighted sum/difference (the CBOC implementation) or via time-multiplexing (the TMBOC implementation).
The main objective of the common GPS and Galileo signal design activity was that the <a href="/facts/Power_spectral_density/q3Rfs7b0">power spectral density</a> (PSD) of the proposed solution would be identical for GPS L1C and Galileo E1 OS signals when the pilot and data components are computed together. This assures high interoperability between both signals. Its power spectral density 
 
 
 
 Φ
 (
 f
 )
 
 
 {\displaystyle \Phi (f)}
 
 is defined by

Φ
        (
        f
        )
        =
        
          
            10
            11
          
        
        B
        O
        C
        (
        1
        ,
        1
        )
        +
        
          
            1
            11
          
        
        B
        O
        C
        (
        6
        ,
        1
        )
      
    
    {\displaystyle \Phi (f)={\frac {10}{11}}BOC(1,1)+{\frac {1}{11}}BOC(6,1)}

MBOC has two main implementations, the <a href="/facts/Composite_Binary_Offset_Carrier/sXx2VvWP">Composite Binary Offset Carrier</a> (CBOC) implementation, currently used in <a href="/facts/Galileo_(satellite_navigation)/sPyWl594">Galileo</a>, and the Time-Multiplexed Binary Offset Carrier (TMBOC), currently used in the modernized <a href="/facts/GPS/DKVLnzF3">GPS</a> L1C signal.

Multiplexed binary offset carrier open-in-new

Multiplexed binary offset carrier