Virtual multi-antenna method for OFDM system and OFDM-based cellular system
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United States of America Patent
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Dec 7, 2010
Grant Date -
Jan 8, 2009
app pub date -
Aug 18, 2006
filing date -
Aug 19, 2005
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Expired
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Abstract
Provided are a virtual multi-antenna method for an orthogonal frequency division multiplexing (OFDM) system and an OFDM-based cellular system. The virtual multi-antenna method includes grouping sub-carriers in a frequency domain of an OFDM symbol and generating at least one group including G sub-carriers; and regarding the G sub-carriers included in the at least one group as multiple channels used in a multi-antenna technique and virtually applying the multi-antenna technique to the transmission and reception of the OFDM symbol. The virtual multi-antenna method can effectively reduce an interference signal and obtain the effects of a spatial division multiple access (SDMA) technique without physically using multiple antennas.
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