Receiving device and channel estimator for use in a CDMA communication system
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United States of America Patent
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-
Dec 9, 2003
Grant Date -
N/A
app pub date -
Aug 30, 1999
filing date -
Aug 31, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
At a base station 2, a CDMA received signal coming in through an antenna 4 is fed to a radio frequency unit (RFU) or high frequency unit 6. The RFU 6 demodulates a baseband signal BB from a signal RF and delivers the signal BB to an analog-to-digital converter (A/D) 8. The resulting digital signal output from the A/D 8 is input to a hybrid interference canceller (HIC) 12 as a received signal Rx Data 10. The HIC 12 divides users into two groups and assigns one combination of a parallel interference canceller and a serial interference canceller to each group. The HIC 12 cancels interference contained in the received signal Rx Data 10 for thereby estimating symbols particular to a plurality of users.
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