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Method for digital transmission of messages










Image Number 2 for United States Patent #4606042.

The invention involves a method for digital transmission of messages in a digital radio relay system which utilizes a superframe so additional information can be transmitted with a digital signal. This method eliminates the simulation of a frame alignment signal by service bits. In this invention m superframes each consisting of two half-frames containing a byte for additional bits and in which a scrambling of the digital signals takes place by adding a periodic bit pattern to the digital signal, are combined to form a multiple frame. The pattern used for scrambling has a period equal to the length of the multiple frame.








 
 
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