System and method for low complexity sphere decoding for spatial multiplexing MIMO
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United States of America Patent
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Sep 18, 2012
Grant Date -
Mar 24, 2011
app pub date -
Feb 2, 2009
filing date -
Feb 6, 2008
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Expired
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Abstract
In this application, an algorithm for decoding multiple input-multiple output (MIMO) transmission for communication systems is provided; the algorithm combines sphere decoding (SD) and zero forcing (ZF) techniques to provide near optimal low complexity and high performance constant time modified sphere decoding algorithm; the algorithm was designed especially for large number of transmit antennas, that allows efficient implementation in hardware—this is done by limiting the number of overall SD iterations; moreover, matrices with high condition number are more likely to undergo SD.
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