Abstract: The system is formed by a base station STB1 and two mobile stations STM1 and STM2. The information exchange between these stations is performed by means of two time multiplex signals which are transported by frequency channels with carriers F1 and F2. In accordance with the invention, the information systematically transmits transformed interleaved data over the two frequency channels. The resistance against fading is notably improved.

Abstract: Transmission system comprising at least two subscriber devices exchanging information signals in the simplex mode. This transmission system comprises at least a remote and a near subscriber device (A1, B1) exchanging information signals in the simplex mode by means of a multiplex of the time-division type in which a control time interval is provided. For a communication between a remote subscriber and a near subscriber, a control time interval (XCCH) is allocated for the transmission of a request to speak made by one of the subscribers. The request to speak received by the other subscriber is used for preventing him from transmitting.

Abstract: A telecommunications system for information having a variable structure. The system uses at least one frequency channel for transmitting each second N.sub.T transmission packets to subscriber arrangements. These packets are formed by n.sub.t bits and are allocated to subscriber arrangements themselves producing 1/Ts information packets of n.sub.s bits per second. The system includes a time-division multiplex circuit (10) for multiplexing the information signals coming from subscriber arrangements (SPA1, CIA2, . . . , SPAm . . . ) and, alternatively, a demultiplex circuit (28) for distributing the time-division multiplex information signals to subscriber arrangements. Interleaving circuits are coupled to the multiplex circuit for inserting, into an allocated transmission packet, bits of different information packets allocated to the same subscriber arrangement. De-interleaving circuits coupled to the demultiplex circuit perform the reverse operation.

Abstract: A plurality of subscriber units are connected to at least two transceiver stations for exchanging information in a time division multiple access mode, in which traffic time intervals are allocated in rotation to a variable number C of channels, where C is dependent on the number and type of units to be connected. T intervals plus one control time interval form a frame, where T is mutually prime with respect to the numbers 2 through C.sub.MAX. M frames form a superframe, where M is the lowest common multiple of the numbers 1 through C.sub.MAX.