Communication apparatus and radio communication system

Details Communication apparatus and radio communication system Communication apparatus and radio communication system

2011-07-19

2011-07-19

Lam, Kenneth (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S259000, C375S267000, C455S059000, C370S332000, C370S333000, C370S342000

Reexamination Certificate

active

07983351

ABSTRACT:
A communication apparatus includes a grouping controlling unit hierarchically groups frequency channels so that the number of channels included in a group of a layer becomes smaller than the number of channels included in a group of a layer immediately above; and a propagation path information estimating unit that estimates propagation path information of the channels. The apparatus also includes an average value calculating unit that calculates an average value of the propagation path information for each group in a highest layer with the estimate values, and calculates the estimate values used in each layer based on an average value of a layer immediately above to calculate an average value of the propagation path information for each group in other layers with the estimate values of the each layer; and a feedback unit that feeds back an average value acquired in each group as feedback information.

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