Low-complexity iterative receiver for space-time coded signals over frequency selective channels
TL;DR: A whitened matched filter (WMF) is proposed which leads to a white-noise "minimum phase" channel model and the performance loss due to the use of the suboptimum List-type equalizer is recovered.
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Abstract: We propose a low-complexity turbo-detector scheme for frequency selective multiple-input multiple-output channels. The detection part of the receiver is based on a List-type MAP equalizer which is a state-reduction algorithm of the MAP algorithm using per-survivor technique. This alternative achieves a good tradeoff between performance and complexity provided a small amount of the channel is neglected. In order to induce the good performance of this equalizer, we propose to use a whitened matched filter (WMF) which leads to a white-noise "minimum phase" channel model. Simulation results show that the use of the WMF yields significant improvement, particularly over severe channels. Thanks to the iterative turbo processing (detection and decoding are iterated several times), the performance loss due to the use of the suboptimum List-type equalizer is recovered.
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Citations
Recursive receivers for diversity channels with correlated flat fading
TL;DR: A general state-space model for diversity based communication systems with flat Rayleigh or Ricean fading is introduced, arguing that such time-recursive receivers offer some advantages over block processing schemes such as computational and memory requirement reductions and the easier incorporation of adaptivity in the receiver structures.
Phase-precoding without CSI for packet retransmissions over frequency-selective channels
TL;DR: Simulation results show that the proposed precoding scheme provides a substantial gain in terms of frame error rate performance of the joint detector without significant increase in receiver complexity, leading to enhanced throughput efficiency and better dropping rate in comparison with the non-precoded system.
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Reduced complexity iterative receiver for coded asynchronous DS-CDMA systems over frequency selective channels
Noura Sellami,Inbar Fijalkow,Mohamed Siala +2 more
- 07 Aug 2002
TL;DR: This work derives a low complexity turbo-detector for coded asynchronous DS-CDMA over frequency selective channels using a multidimensional whitened matched filter (WMF) which leads to a white-noise "minimum phase" channel model.
3
Low-complexity equalizers for MIMO frequency selective channels
Noura Sellami,Mohamed Siala,Inbar Fijalkow +2 more
- 27 Sep 2004
TL;DR: Two low-complexity equalizers for frequency selective multiple-input multiple-output (MIMO) channels are presented: the MMSE-block decision feedback equalizer (MMSE-BDFE) and the prefiltered list-type MAP equalizer.
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A decoder for low-complexity equalization of coded frequency selective MIMO channels
Noura Sellami,Inbar Fijalkow +1 more
- 10 Dec 2002
TL;DR: A decoder for low-complexity equalization of coded frequency selective multiple-input multiple-output channels that achieves a good trade-off between performance and complexity even when the channel is not minimum phase is proposed.
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