Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2008-07-22
2008-07-22
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
07403570
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: 6151328 (2000-11-01), Kwon et al.
patent: 6473467 (2002-10-01), Wallace et al.
patent: 6785251 (2004-08-01), Bolgiano et al.
Li-US 2004/0086055; Pilot-Aided Channel Estiamtion For OFDM In Wireless Systems.
Ma Jianglei
Tong Wen
Wu Shiquan
Ha Dac V.
Nortel Networks Limited
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