Neosat Gmbh

Thomas Delamotte

Christian Hofmann

Andreas Knopp

Robert Schwarz

Kai-Uwe Storek

The invention relates to a method for operating a communication system, the communication system comprising at least two separate transmitting antennas located on Earth and at least two receive antennas located with a distance from Earth, the receive antennas having directional receiving patterns which cover a common region on Earth, the method comprising the following steps: &#x2014;precoding the symbol sequences before transmission from the transmitting antennas to the receive antennas in order to reduce spatial interference between the symbol sequences, and &#x2014;simultaneously transmitting symbol sequences from the transmitting antennas to the receive antennas by spatial and frequency multiplexing in a time and phase synchronized fashion, the symbol sequences being transmitted from different transmitting antennas being different from each other but being transmitted on the same frequency. In this way, a high bandwidth method for transmitting data from an Earth transmitting station to a receiving station which is located with a distance from Earth.

Method for operating a communication system

Operating a communication system comprises providing N transmitting antennas (TA) for transmitting symbol streams (SST) and K ground receivers (GR) which may be provided with symbol streams (SST) transmitted by transmitting antennas (TA). Transmitting antennas (TA) are located with a distance from Earth (E). Ground receivers (GR) are spatially separated from each other, wherein the constraint K&#x3e;N applies. The method includes:

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Munich, Germany

Thomas Delamotte