| 摘要 |
A receiver for detecting a signal comprises an input module (31) for receiving a signal transmitted over a communications channel, the received signal comprising a plurality of observed signal components from a predetermined alphabet, and the input module arranged to receive information describing the transmission of the signal over the communications channel, an initialization module (40) for deriving first and second components of the received information describing the transmission of the signal, and for formatting the received signal for estimation by equalising a portion of the effect of transmission on the signal using the first derived component to generate a formatted signal comprising a plurality of formatted signal components, an error correction module (41) for determining the plurality of estimated signal components from the predetermined alphabet which are closest to the formatted signal components in a space defined using the second derived information component, and an error detection module (42) for receiving an estimation decision from the error correction module and determining whether the estimation decision contains one or more errors, the error detection module arranged to control the error correction module to correct an estimation decision error if one or more errors are determined, and to output a detected signal containing the estimated plurality of signal components if no error is determined. The receiver can offer near-optimum detection performance and excellent computational scalability for networks involving large number of antennas/data streams per channel. The present invention also provides a communications system and a signal receiving method. |
