Turbo equalization: principles and new results
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- 7 August 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Communications
- Vol. 50 (5) , 754-767
- https://doi.org/10.1109/tcomm.2002.1006557
Abstract
We study the turbo equalization approach to coded data transmission over channels with intersymbol interference. In the original system invented by Douillard et al. (1995), the data are protected by a convolutional code and the receiver consists of two trellis-based detectors, one for the channel (the equalizer) and one for the code (the decoder). It has been shown that iterating equalization and decoding tasks can yield tremendous improvements in bit error rate. We introduce new approaches to combining equalization based on linear filtering, with decoding.. Through simulation and analytical results, we show that the performance of the new approaches is similar to the trellis-based receiver, while providing large savings in computational complexity. Moreover, this paper provides an overview of the design alternatives for turbo equalization with given system parameters, such as the channel response or the signal-to-noise ratio.Keywords
This publication has 31 references indexed in Scilit:
- Convergence behavior of iteratively decoded parallel concatenated codesIEEE Transactions on Communications, 2001
- Effect of precoding on the convergence of turbo equalization for partial response channelsIEEE Journal on Selected Areas in Communications, 2001
- The turbo decoding algorithm and its phase trajectoriesIEEE Transactions on Information Theory, 2001
- Analysis of sum-product decoding of low-density parity-check codes using a Gaussian approximationIEEE Transactions on Information Theory, 2001
- The capacity of low-density parity-check codes under message-passing decodingIEEE Transactions on Information Theory, 2001
- Analyzing the turbo decoder using the Gaussian approximationIEEE Transactions on Information Theory, 2001
- The geometry of turbo-decoding dynamicsIEEE Transactions on Information Theory, 2000
- Convergence of iterative decodingElectronics Letters, 1999
- Serial concatenation of interleaved codes: performance analysis, design, and iterative decodingIEEE Transactions on Information Theory, 1998
- Unveiling turbo codes: some results on parallel concatenated coding schemesIEEE Transactions on Information Theory, 1996