Wireless communications apparatus and method using array...

Pulse or digital communications – Spread spectrum – Direct sequence

Reexamination Certificate

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C375S347000

Reexamination Certificate

active

07408977

ABSTRACT:
A wireless communication apparatus comprises an array antenna configured to receive a signal at multiple antenna elements; a DoA estimation unit configured to estimate directions of arrival of multiple paths contained in the received signal; an angle spread estimation unit configured to estimate an angle spread of the multiple paths; a first weighting calculation unit configured to estimate a common set of weighting factors for all the paths; a second weighting calculation unit configured to estimate an individual set of weighting factors for each of the multiple paths based on the estimated directions of arrival of the paths; a weighting unit configured to weight the received signal by multiplying the received signal by one of the common set of weighting factors or individual set of weighting factor; and a demodulator configured to demodulate the weighted signal.

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patent: 2002-368663 (2002-12-01), None
Shinya Tanaka, et. al., “Pilot Symbol-Assisted Decision-Directed Coherent Adaptive Array Diversity for DS-CDMA Mobile Radio Reverse Link”, IEICE Trans. Fundamentals, vol. E80-A., Dec. 1997, pp. 2445-2454.
A. Harada, et. al., “Performance of Adaptive Antenna Array Diversity Transmitter for W-CDMA Forward Link”, Proc. PIMRC99, Osaka, Japan, Sep. 1999, pp. 1134-1138.

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