APPARATUS AND METHOD FOR ESTIMATING CHANNEL IN OFDM/OFDMA BASED WIRELESS COMMUNICATION SYSTEM
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United States of America Patent
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Issued Date -
Feb 4, 2010
app pub date -
Oct 11, 2007
filing date -
Oct 11, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A channel estimation apparatus of the present invention includes a preamble channel operation unit for carrying out an operation on pilot channel estimation values of pilots, which are transmitted from a transmitting antenna that transmits a preamble, as an improved pilot channel estimation value by employing a preamble channel estimation value based on a preamble included in received signals respectively received by a plurality of receiving antennas, a first channel estimation unit for estimating a channel for each of the receiving antennas through interpolation of a symbol axis and a frequency axis employing the improved pilot channel estimation value, and a second channel estimation unit for estimating a channel for each of the receiving antennas through interpolation of a symbol axis and a frequency axis employing pilot channel estimation values of pilots transmitted from the same transmitting antenna, of pilots transmitted from a transmitting antenna that does not transmit the preamble, of a plurality of transmitting antennas.
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