Preamble design for multiple input—multiple output...

Details Preamble design for multiple input—multiple output... Preamble design for multiple input—multiple output...

2007-06-19

2007-06-19

Ha, Dac V. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S267000, C375S299000, C375S347000, C455S101000, C455S112000, C370S330000, C370S465000

Reexamination Certificate

active

09819957

ABSTRACT:
One or more preambles are inserted into frames of Orthogonal Frequency Multiplexing (OFDM)-Multiple Input, Multiple Output (MIMO) signals. The preamble is received by the antennas of a receiver, decoded and compared to known values to provide synchronization, framing, channels estimation, offsets and other corrections to the transmitted signal.

REFERENCES:
patent: 6442214 (2002-08-01), Boleskei et al.
patent: 6704370 (2004-03-01), Chheda et al.
patent: 6731668 (2004-05-01), Ketchum
patent: 2002/0122381 (2002-09-01), Wu et al.
Jones, V.K.; Raleigh, Gregory G.; Channel Estimation For Wireless OFDM Systems; IEEE, Nov. 8, 1998, pp. 980-985.
Cimini, Leonard J. et al.; Clustered OFDM With Transmitter Diversity And Coding; IEEE; Nov. 18, 1996, pp. 703-707.
Daneshrad, Babak et al; Clustered-OFDM Transmitter Implementation; IEEE; 1996, pp. 1064-1068.
Matsumoto, Yoichi et al.; OFDM Subchannel Space-Combining Transmission Diversity; IEEE, 1998, pp. 137-141.

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