Method of transmitting data and estimating channel...

Details Method of transmitting data and estimating channel... Method of transmitting data and estimating channel...

2005-09-30

2010-12-14

Payne, David C (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S259000, C375S261000, C375S262000, C375S263000, C375S264000, C375S265000, C375S267000, C375S268000, C375S269000, C375S270000

Reexamination Certificate

active

07852954

ABSTRACT:
A method of feeding back channel information in an OFDM or OFDMA radio communications system is disclosed, in which a transmitting side instructs a region for measuring a downlink channel status and in which a receiving side feeds back the channel information to the transmitting side. The present invention includes the steps of transmitting instruction information instructing at least one region of at least two regions within a data frame as a signal measurement region to a receiving side and receiving the channel information estimated by a signal included in the signal measurement region instructed by the instruction information from the receiving side.

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