Data exchange system with a plurality of data carriers

Details Data exchange system with a plurality of data carriers Data exchange system with a plurality of data carriers

1996-09-06

1999-09-21

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455517, H04B 138

Patent

active

059566540

ABSTRACT:
The system includes a base station (1) which communicates with a plurality of data carriers (2.sub.1, 2.sub.2) via wireless links. In order to enable the station (1) to identify several data carriers simultaneously, the system includes a device (15) for the separation of sources and also several demodulation units (12.sub.1, 12.sub.2).
Depending on the type of modulation, the type of link used, and the arrangement of the source separation device (15) with respect to the demodulation units, the signals received by the source separation device can be convolutional mixtures or instantaneous linear mixtures of the signals transmitted by the data carriers. In order to process the different types of signal received, the source separation device may have a recursive structure, a direct structure or a mixed structure. Adaptation means (105) calculate filtering coefficients which are adapted to enable the source separation device (15) to separate the estimated identification signals for each data carrier requesting communication with the base station.

REFERENCES:
patent: 5124699 (1992-06-01), Tervoert et al.
patent: 5594447 (1997-01-01), Usui et al.
patent: 5627544 (1997-05-01), Snodgrass et al.

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