| 摘要 |
A Maximum Likelihood Sequence Estimator comprises a signal receiver (401) which receives a first signal for decoding. An ISI processor (403) generates a compensation signal from the first signal. The compensation signal represents intersymbol interference outside a channel model window of a Maximum Likelihood Sequence Estimation (MLSE) but does not represent intersymbol interference within the channel model window of the MLSE. A compensation processor (405) generates a compensated signal by compensating the first signal by the compensation signal, e.g. by subtracting the compensation signal from the first signal. The compensated signal is fed to a MLSE decoder (407) which decodes data of the first signal by performing the MLSE on the compensated signal. The invention may provide reduced detection error rates and may in particular be suitable for optical disc reading systems. |
