Patent ID: 6904109
Filing Date: 2005-06-07
Classification: H04B

Abstract:
1. A method for canceling signal interference in a TDMA data transmission system, comprising: calculating estimates of interfering signals in the TDMA data transmission system; subtracting the estimates of the interfering signals from a desired signal; calculating a confidence coefficient in a soft-output channel decoder in the TDMA data transmission system, the confidence coefficient having a value in a range greater than 0 and less than 1, for the estimates of the interfering signals based on a received signal; forming an estimate of each interference signal as a product of a channel estimate and output of the soft-output channel decoder; subtracting the formed estimates from the received signal; dividing received signals into several groups in a receiver, each group comprising at least two signals; and carrying out in each group simultaneous detection of the signals from a received transmission; wherein each group is detected consecutively; wherein the signals of groups already detected are regenerated and subtracted from the received transmission prior to detecting a subsequent group; wherein the signals detected prior to the subtraction from the received transmission are weighed by a confidence coefficient calculated for each received signal.