Transmission system for multiple step digital signals - consists of number of equal bit trains combined into one bit train of higher repetition frequency

摘要

The digital signal consists of a combination of 2n binary signal currents and is produced by a scrambler on the sender side, and recovered at the receiving end by a descrambler synchronised by a transmitted code. The scrambler and descrambler consist of modulo 2 adders and controlling them N shift registers in similar quasi-random generators. A modulo 2 adder (M1, M2) is allocated in the signal path at the sending (SS) and receiving (SE) and to each of the 2n binary signal currents (sig 1, sig 2). It is controlled by one of the 2n outputs of the respective quasi-random generator (QZGS, QZGE). Mutual phase shift between the 2n equal trains at the 2n outputs of the quasi-random generators is such, that nesting of their bits leads to a quasi-random train with the same method of formation but with a repetition frequency 2n times higher.