Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
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United States of America Patent
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Oct 6, 2015
Issued Date -
N/A
app pub date -
Oct 21, 2014
filing date -
Oct 17, 2001
priority date (Note) -
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Abstract
Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.
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