| 摘要 |
A channel estimator comprises a fading estimator, which provides a first channel estimate at predetermined pilot symbols; a first interpolator, which provides a further estimate for the remaining symbols; and a first invertor, which inverts the outpout of the first interpolator. A first delay units delays the input signal for a predetermined time, and its output is corrected, using the output of the first invertor. A second channel estimate is then made (second interpolator, level controller and second invertor), and a second correction is made. <IMAGE> |
