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Combined Serially Concatenated Codes and MMSE Equalization: an EXIT Chart Aided Perspective

Combined Serially Concatenated Codes and MMSE Equalization: an EXIT Chart Aided Perspective
Combined Serially Concatenated Codes and MMSE Equalization: an EXIT Chart Aided Perspective
Iterative Minimum Mean Square Error (MMSE) equalization and channel decoding is appealing, since it exhibits a lower complexity than maximum a posteriori (MAP) turbo equalization. However, the MMSE equalizer’s attainable performance is upper-bounded by that recorded for transmission over the coded AWGN channel, a phenomenon usually referred to as ”error shoulder”. In order to circumvent this performance limitation, we propose a three-stage concatenated transceiver constituted by inner and outer coding as well as MMSE equalization, which achieves significant iteration gains, despite using low-complexity serially concatenated memory-1 convolutional codes. It is demonstrated that this three-stage scheme outperforms the traditional two-stage MMSE turbo equalization scheme above a certain Eb/N0 threshold. Furthermore, the convergence behavior of the proposed scheme is analyzed with the aid of 3D EXtrinsic Information Transfer (EXIT) charts and their 2D projections, leading to a number of practical iterative receiver design guidelines.
5 pages
Wang, J.
dc08532d-c8db-4f40-83ae-f5abf4acc068
Ng, S.X.
e19a63b0-0f12-4591-ab5f-554820d5f78c
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Wang, J.
dc08532d-c8db-4f40-83ae-f5abf4acc068
Ng, S.X.
e19a63b0-0f12-4591-ab5f-554820d5f78c
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Wang, J., Ng, S.X., Yang, L-L. and Hanzo, L. (2006) Combined Serially Concatenated Codes and MMSE Equalization: an EXIT Chart Aided Perspective. At IEEE VTC'06 (Fall) IEEE VTC'06 (Fall), Canada. 25 - 28 Sep 2006. 5 pages.

Record type: Conference or Workshop Item (Paper)

Abstract

Iterative Minimum Mean Square Error (MMSE) equalization and channel decoding is appealing, since it exhibits a lower complexity than maximum a posteriori (MAP) turbo equalization. However, the MMSE equalizer’s attainable performance is upper-bounded by that recorded for transmission over the coded AWGN channel, a phenomenon usually referred to as ”error shoulder”. In order to circumvent this performance limitation, we propose a three-stage concatenated transceiver constituted by inner and outer coding as well as MMSE equalization, which achieves significant iteration gains, despite using low-complexity serially concatenated memory-1 convolutional codes. It is demonstrated that this three-stage scheme outperforms the traditional two-stage MMSE turbo equalization scheme above a certain Eb/N0 threshold. Furthermore, the convergence behavior of the proposed scheme is analyzed with the aid of 3D EXtrinsic Information Transfer (EXIT) charts and their 2D projections, leading to a number of practical iterative receiver design guidelines.

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More information

Published date: 2006
Additional Information: Event Dates: 25-28 September 2006
Venue - Dates: IEEE VTC'06 (Fall), Canada, 2006-09-25 - 2006-09-28
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 263041
URI: https://eprints.soton.ac.uk/id/eprint/263041
PURE UUID: c68b681d-fcd4-4290-9726-4a8b7ce5211a
ORCID for S.X. Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for L-L. Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 03 Oct 2006
Last modified: 06 Jun 2018 13:14

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Contributors

Author: J. Wang
Author: S.X. Ng ORCID iD
Author: L-L. Yang ORCID iD
Author: L. Hanzo ORCID iD

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