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The N3 Carrier System: Transmission Aspects and Objectives

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1 Author(s)
Bleisch, G. ; Bell Labs, North Andover, MA, USA

The N3 carrier system is a compandored 24-channel, single sideband system utilizingN-repeatered lines of existing design. This paper includes a general description of the system organization, a discussion of system features, and gives expected performance values as well as objectives of some significant system transmission parameters. Features of special interest include a common carrier supply, frequency-correction units to eliminate frequency shift introduced by the repeatered line, and automatic carrier alarm provisions. Incorporating modern solid-state circuit designs with liberal use of negative feedback, the newly developed N3 carrier terminal provides a new standard of short-haul performance capable of meeting today's intertoll transmission objectives.

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Communication Technology, IEEE Transactions on  (Volume:13 ,  Issue: 3 )