| 摘要 |
An equaliser for a digital communication system receiver is characterised in that it has an exclusively recursive predictor (11) and an exclusively transverse phase equaliser (12) with the two components having switchable relative positions, wherein means are provided for evaluating decision error performance and for controlling the switching of the two components according to criteria for evaluating the level of difficulty of the reception, the predictor being upstream and adaptively optimised to whiten its own output, while the phase equaliser (12) is downstream, self-learning and adaptively optimised during difficult reception periods, whereas the predictor (11) is downstream and the phase equaliser (12) upstream, both being jointly adaptively optimised so as to minimise decision errors between the output ( &cir& d(n)) of the decision circuit (2) and its input (w(n)) or (y(n)), during clear reception periods. The predictor (11) is then preferably fed with the estimated data, so that the device becomes recursive and non-linear (DFE).
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