HIGHER ORDER CONSTELLATIONS BASED NON-LINEAR DETECTION

摘要

The present invention relates to a receiver (2) comprising demodulator means (11) for demodulating a received signal such that a first demodulated component (l_out) and a second demodulated component (Q_out) are obtained. The receiver further comprises estimation means (6), the first demodulated component (l_out) and a second demodulated component (Q_out) being arranged to be input into the estimation means (6). The estimation means (6) is further arranged to estimate and output a first estimated transmitted component (î_ιn) and a second estimated transmitted component (Q_in). The receiver (2) further comprises first calculating means (7), the first demodulated component (l_out), the second demodulated component (Q_out), the first estimated transmitted component (î_in) and the second estimated transmitted component (Q_in) being arranged to be input into the first calculating means (7), where the first calculating means (7) is arranged to estimate and output a transfer function. The present invention also relates to a corresponding method.