Sciweavers

Share
ICC
2000
IEEE

A Class of Block-Iterative Equalizers for Intersymbol Interference Channels

9 years 21 days ago
A Class of Block-Iterative Equalizers for Intersymbol Interference Channels
—A new and efficient class of nonlinear equalizers is developed for intersymbol interference (ISI) channels. These “iterated-decision equalizers” use an optimized multipass algorithm to successively cancel ISI from a block of received data and generate symbol decisions whose reliability increases monotonically with each iteration. These equalizers have an effective complexity comparable to the decision-feedback equalizer (DFE), yet asymptotically achieve the performance of maximum-likelihood sequence detection (MLSD). We show that, because their structure allows cancellation of both precursor and postcursor ISI, iterateddecision equalizers outperform the minimum mean-square error DFE by 2.507 dB on severe ISI channels even with uncoded systems. Moreover, unlike the DFE, iterated-decision equalizers can be readily used in conjunction with error-control coding, making them attractive for a wealth of applications.
Albert M. Chan, Gregory W. Wornell
Added 31 Jul 2010
Updated 31 Jul 2010
Type Conference
Year 2000
Where ICC
Authors Albert M. Chan, Gregory W. Wornell
Comments (0)
books