DE-MAPPING METHOD FOR WIRELESS COMMUNICATIONS SYSTEMS
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United States of America Patent
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Issued Date -
May 26, 2005
app pub date -
Dec 22, 2003
filing date -
Nov 20, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A de-mapping method for wireless communications systems transforms an I signal and a Q signal transformed from wireless signals received by a receiver in a wireless communications system into a plurality of sequentially ordered I and Q weighting values respectively. The first I and the first Q weighting values are set to be values of the I and Q signals respectively, and following I and Q weighting values are set to be products of bit signs corresponding to preceding respective I and Q weighting values and differences between the preceding I and Q weighting values and a threshold value corresponding to the preceding I and Q weighting values by determining signs of the preceding I and Q weighting values.
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