Patent ID: 8718171

Claim:
A method for determining estimated values ({circumflex over ({right arrow over (s)} 1-4 , {circumflex over ({right arrow over (s)} 5-8 ) for data symbols ({right arrow over (s)} 1-4 , {right arrow over (s)} 5-8 ) transmitted from at least four transmission antennas of a MIMO transmission system, which are encoded according to the Matrix B transmission mode and weighted with coefficients (v i ), the method comprising: receiving data symbols ({right arrow over (r)} 1-4 , {right arrow over (r)} 5-8 ) at at least two reception antennas, determining hypotheses ({tilde over ({right arrow over (s)} 1-4 , {tilde over ({right arrow over (s)} 5-8 ) for the transmitted data symbols ({right arrow over (s)} 1-4 , {right arrow over (s)} 5-8 ) from the received data symbols ({right arrow over (r)} 1-4 , {right arrow over (r)} 5-8 ) received from each of the at least two reception antennas, which are weighted in each case with hypotheses ({tilde over (h)} nm ) for the transmission factors (h nm ) associated with a partial transmission channel, in each case between a transmission antenna m and a reception antenna n, and with hypotheses ({tilde over (v)} i ) for the coefficients (v i ), determining a metric for each hypothesis ({tilde over ({right arrow over (s)} 1-4 , {tilde over ({right arrow over (s)} 5-8 ) associated in each case with at least one transmitted data symbol ({right arrow over (s)} 1-4 , {right arrow over (s)} 5-8 ), and determining the estimated value ({tilde over ({right arrow over (s)} 1-4 , {tilde over ({right arrow over (s)} 5-8 ) for the respective, transmitted data symbol ({right arrow over (s)} 1-4 , {right arrow over (s)} 5-8 ) from the lowest metric associated with each hypothesis ({circumflex over ({right arrow over (s)} 1-4 , {circumflex over ({right arrow over (s)} 5-8 ).