| 摘要 |
<p>The present invention comprises an equalizing structure (10) for a receiving device of a wireless communication system, in which two or more transmit signals transmitted in parallel from one or more transmitters are received in receive signal vectors representing two or more receive data streams, said signals comprising information modulated onto carrier signals according to a modulation scheme, wherein all possible transmit signals are represented by candidate constellation values in the signal constellation of said modulation scheme, comprising,
a metric value calculator (17) adapted to calculate metric values on the basis of said receive signal vectors and the product of channel estimation values with candidate signal vectors, each candidate signal vector comprising a candidate constellation value for each of said two or more transmit signals,
a maximum likelihood detector (16) adapted to detect one of said candidate signal vectors having a minimum Euclidean distance to a respective receive signal vector as a most likely transmit signal vector on the basis of said metric values, and
a soft decision value calculator (18) adapted to calculate a soft decision value for said most likely candidate signal vectors on the basis of the candidate signal vectors of at least some of the metric values. The invention further comprises a corresponding equalizing method and a computer program performing said method.</p> |
