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In high speed transmission system such as SDH,parallel scrambling technique is re-quired.This paper presents a method of expanding matrix,which makes the traditional ma-trix method capable of realizing parallel scramblers of any size.A novel method called delayoperator method is also described in this paper.The 8-bit parallel scrambling circuitry ofSDH has been realized with the two methods.
In high speed transmission system such as SDH, parallel scrambling technique is re-quired. This paper presents a method of expanding matrix, which makes the traditional ma-trix method capable of realizing parallel scramblers of any size. A novel method called delayoperator method is also described in this paper. The 8-bit parallel scrambling circuitry of SDH has been realized with the two methods.