Apparatus for estimating propagation path characteristics

Details Apparatus for estimating propagation path characteristics Apparatus for estimating propagation path characteristics

2007-01-23

2007-01-23

Pham, Brenda (Department: 2616)

Multiplex communications

Communication over free space

Repeater

C375S150000

Reexamination Certificate

active

10121776

ABSTRACT:
An apparatus for estimating phase/amplitude characteristics of a propagation path. The apparatus removes, from a receive signal on a data channel on which known information is transmitted upon being time-multiplexed between items of unknown information, transmit information on this channel, which provides phase/amplitude information indicative of phase/amplitude characteristics that this data channel has suffered over the propagation path. The apparatus further removes from a receive signal on a data channel on which only unknown information is transmitted, transmit information on this channel, which provides phase/amplitude information indicative of phase/amplitude characteristics that this data channel has suffered over the propagation path. The apparatus includes an adder for adding the two phase/amplitude information and an estimation unit for estimating, from an adder output, a phase characteristic and an amplitude characteristic that each channel has suffered over the propagation path.

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Japanese Patent Office Notice of Rejection dated Mar. 28, 2006 with translation.

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