Apparatus and method for transmitting/receiving preamble signal and estimating channel in an orthogonal frequency division multiplexing communication systems using multiple input multiple output scheme
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United States of America Patent
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Jan 1, 2013
Grant Date -
Jun 12, 2008
app pub date -
Dec 11, 2007
filing date -
Dec 12, 2006
priority date (Note) -
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Abstract
A signal reception apparatus of an orthogonal frequency division multiplexing (OFDM) communication system using a multiple input, multiple output (MIMO) scheme. The signal reception apparatus, when it uses the NR receive antennas, receives a time-domain preamble signal transmitted by a signal transmission apparatus corresponding thereto via each of the NR receive antennas, and estimates a channel according to a channel estimation scheme using the time-domain preamble signal received via each of the NR receive antennas. When the signal transmission apparatus uses NT transmit antennas, the time-domain preamble signal is a signal transmitted by the signal transmission apparatus via each of the NT transmit antennas for a second time period which is set according to a corresponding transmit antenna within a first time period.
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