TDMA point-to-multipoint communication system

Abstract

Abstract For this system, having a central station (Z) and several substations (U1, U2, ...), the frame structure is selected in such a manner that the central station (Z) first sends out the bursts (B1, B2, ...) for the most distant substations and the substations (U1, U2, ...) send back in the reverse order to the central station (Z). In the central station (Z) and in the substations (U), buffer stores (SPZ, EPZ, SPU, EPU) are provided for converting continuous signals into burst signals and conversely. The queuing times of the substations are established, or, respectively, the starting times for the respective sending-out of a burst from the substations are determined via corresponding control units (STZ, STU). In addition, synchronising words and information items on the queuing times of the substations are inserted into the transmit frame by the control unit (STZ) of the central station (Z). This communications system is suitable both for cable transmission and for radio transmission (Fig. 1).

Inventors

• 👤 Josef Dipl.-Ing. Sperlich

Bibliographic Details