Equalisation with adaptive time lag

Yu Gong, Colin Cowan

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In an adaptive equaliser, the time lag is an important parameter that significantly influences the performance. Only with the optimum time lag that corresponds to the best minimum-mean-square-error (MMSE) performance, can there be best use of the available resources. Many designs, however, choose the time lag either based on preassumption of the channel or simply based on average experience. The relation between the MMSE performance and the time lag is investigated using a new interpretation of the MMSE equaliser, and then a novel adaptive time lag algorithm is proposed based on gradient search. The proposed algorithm can converge to the optimum time lag in the mean and is verified by the numerical simulations provided.
Original languageEnglish
Pages (from-to)661-667
Number of pages7
JournalIEE Proceedings - Communications
Issue number5
Publication statusPublished - Oct 2005

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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