ANALOG TIME-DIVISION MULTIPLEXING

A multiplexing method by which, in a system of N users, segments of du ration T s from each user are rapidly transmitted in the channel, as a nalogue signals of duration T/N s is described. Thus, each user signal can be considered to be compressed in time by a factor of N before tr ansmission, and the total time to transmit all N signals is T s. At th e receiving end, user signals are restored to their original duration, by an inverse mechanism of decompression. This technique allows the i nterlacing of N analogue signals in time and can therefore be consider ed as an analogue time division multiplexing (ATDM) technique. In this way, through a channel of bandwidth B, N = B/B(c) concurrent users of bandwidth B(c) each can communicate. A four-user ATDM system was impl emented and its performance was evaluated experimentally.