Data transmission method and radio system

Telecommunications – Transmitter and receiver at separate stations – With control signal

Reexamination Certificate

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Details

C455S522000, C455S101000, C375S299000

Reexamination Certificate

active

07058363

ABSTRACT:
The invention relates to a radio system and a data mission method. In the method of the invention, a transmitter codes a signal to be transmitted such that at least two non-orthogonal channels are obtained; the transmitter transmits the coded channels via at least two different transmit antenna paths; and a receiver receives the signal. The transmit antenna paths are divided into at least two different groups; and the signals to be transmitted through the different groups are weighted in the transmitter by means of changeable weighting coefficients determined for each group.

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patent: WO 00/36764 (2000-06-01), None
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Tirkkonen et al., “Minimal Non-Orthogonality Rate 1 Space-Time Block Code for 3+ Tx Antennas,” IEEE 6thInt. Symp. on Spread-Spectrum Tech. and Appli., NJIT, New Jersey, Sep. 6-8, 2000, pp. 429-432.
Hottinen et al., “Transmit Diversity by Antenna Selection in CDMA Downlink,” IEEE 5thInt. Symp. on Spread-Spectrum Tech. and Appli., IEEE ISSSTA '98 Proceedings, Sep. 2-4, 1998, South Africa, pp. 767-770.
Calderbank et al., “Space-Time Coding for High Data Rate Wireless Communications,” Fifth Workshop on Smart Antennas in Wireless Mobile Communications, Jul. 23-24, 1998, Stanford University, pp. 1-16.

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