The author presents a proposal for solving the problem of reduced performance of coded modulation due to colored channel noise by whitening the noise with an added noise predictor in the decision-feedback equalizer (DFE) This also has the benefit of increasing the nominal SNR. The resulting equalizer has a structure encompassing as a special case the noise-predictive DFE proposed earlier by others. Several numerical examples are provided to illustrate the digital subscriber line transmission performance with the new noise-predictive DFE. It is shown that the added noise predictor improves the transmission performance in two ways: first, it decorrelates the noise, and second, it decreases the noise power by its prediction gain.
|Number of pages||5|
|Journal||Conference Record - International Conference on Communications|
|State||Published - 1 Dec 1989|
|Event||IEEE International Conference on Communications - ICC'89 - Boston, MA, USA|
Duration: 11 Jun 1989 → 14 Jun 1989