Data sequence detection in band-limited channels using cooperative sequence equalization

摘要

A method for detecting a data sequence includes generating a sample stream, which is a time-sequenced digital signal associated with samples of an analog signal. The sample stream is input to n equalization filter banks, which each have m equalization filters to generate m equalized sample streams. The m equalized sample streams from each equalization filter bank are input to a corresponding one of n noise predictive filters. Each noise predictive filter is an m-tap noise predictive filter that receives the m equalized sample streams from a corresponding one of the n equalization filter banks. Each noise predictive filter is associated with one of n data patterns. A filtered equalization stream is generated by each noise predictive filter. Noise sample streams are generated using the filtered equalization streams generated by the n noise predictive filters. A data sequence is detected using the noise sample streams.

主权项

1. A method for detecting a data sequence, comprising:
generating a sample stream, wherein the sample stream is a time-sequenced digital signal associated with samples of an analog signal; inputting the sample stream to n equalization filter banks, wherein each equalization filter bank comprises m equalization filters, and wherein n and m are each greater than 1; equalizing the sample stream using the m equalization filters in each of the n equalization filter banks to generate m equalized sample streams in each of the n equalization filter banks; inputting the m equalized sample streams from each of then equalization filter banks to a corresponding one of n noise predictive filters, wherein each noise predictive filter comprises an m-tap noise predictive filter that receives the m equalized sample streams from a corresponding one of the n equalization filter banks, and wherein each noise predictive filter is associated with one of n data patterns each corresponding to a respective one of the n equalization filter banks; generating a filtered equalization stream by each of the n noise predictive filters; generating n noise sample streams using the filtered equalization streams generated by the n noise predictive filters; and detecting a data sequence using the n noise sample streams.