Method and apparatus for dynamic switching of space-time...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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C370S468000, C375S267000, C455S224000, C704S219000

Reexamination Certificate

active

07733970

ABSTRACT:
Systems and methods are described for dynamic switching techniques for space-time coding/decoding based on channel status information for a MIMO-OFDM system. The system and method for dynamic switching of space-time coding mode include a determining step for determining a space-time coding mode based on feedback information by a transmitter; a mapping step for mapping the determined coding mode to a corresponding coder so that a number of sets symbol streams corresponding to respective transmit antennas are generated after coding a modulated symbol sequence for desired coding; and a feedback step for periodically feeding used coding mode information back to a receiver via a forward control channel.

REFERENCES:
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patent: 0145300 (2001-06-01), None
patent: 2005055507 (2005-06-01), None
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Helmut Bolcskei, et al.; “Space-Frequency Coded broadband OFDM Systems;” copyright 2000 IEEE; pp. 1-6.
Andreas F. Molisch, et al.; “Space-Time-Frequency (STF) Coding for MIMO-OFDM Systems;” IEEE Communications Letters Sep. 2002; pp. 370-372; vol. 6; No. 9.
C.R.N. Athaudage, et al.; “Delay-spread estimation using cyclic-prefix in wireless OFDM systems;” IEE Proceedings Dec. 2004; pp. 559-566; vol. 151; No. 6.
Ganyoul et al, “Adaptive switching scheme for space-time coded OFDM systems”, Vehicular Technology Conference, 2005. VTC-2005-Fall. 2005 IEEE 62nd Dallas, Texas, USA Sep. 25-28, 2005, Piscataway, NJ, USA, IEEE, vol. 3, Sep. 25, 2008, pp. 1455-1459, XP010878686.

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