Cdma receiver with weighted interference cancellation

Details Cdma receiver with weighted interference cancellation Cdma receiver with weighted interference cancellation

H - Electricity

04

B

H04B 1/69 (2006.01) H04B 1/12 (2006.01) H04B 7/005 (2006.01) H04B 7/216 (2006.01) H04B 15/00 (2006.01) H04J 13/04 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2210214

A code division multiple access receiver estimates symbol values transmitted by different stations by despreading a combined received signal, weights the estimated symbol values by use of weighting factors calculated for the different stations, respreads the weighted symbol values to estimate the interference due to each station, and subtracts the estimated interference from the received signal to produce a residual signal. The weighting factors can be calculated from the residual signal; the weighting factors are calculated so as to minimize the power of the residual signal. The weighting factors are adjusted at certain intervals, preferably at intervals determined from the rate of fading of the received signal.

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