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.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Ng, S.X.
e19a63b0-0f12-4591-ab5f-554820d5f78c
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
2006
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
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.
IEEE VTC'06 (Fall), , Montreal, Canada.
25 - 28 Sep 2006.
.
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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Published date: 2006
Additional Information:
Event Dates: 25-28 September 2006
Venue - Dates:
IEEE VTC'06 (Fall), , Montreal, Canada, 2006-09-25 - 2006-09-28
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 263041
URI: http://eprints.soton.ac.uk/id/eprint/263041
PURE UUID: c68b681d-fcd4-4290-9726-4a8b7ce5211a
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Date deposited: 03 Oct 2006
Last modified: 18 Mar 2024 02:49
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