POINT TO MULTIPOINT COMMUNICATION SYSTEM WITH OPTICAL SIGNAL TRANSMISSION

摘要

Devices with high-frequency signal transmission cannot be used everywhere due to physical-technical or authorization reasons or over-occupancy of the propagation medium. The disclosed device overcomes these limitations and additionally enables determination of the position of active subscribers. The coverage area of the device is subdivided into partial areas, which are covered by the base station (1) by means of a radiator/sensor unit (4), wherein the radiator is connected in parallel and the sensors are individually connected to inputs (5) of a diversity device (6) whose information simultaneously shows the position information by means of the corresponding selected input, said information being shown on a display device (7). In adjacent partial areas where no gaps exist, an area change can be performed and displayed by the mobile parts (11) without any interruption. The device can be embodied with modified DECT devices. A code spread signal transmission has been envisaged. The device can be advantageously used in areas fully surrounded by metal coverings and in which security requirements in terms of the whereabouts of the subscribers exist.