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


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), Canada. 25 - 28 Sep 2006. , 5 pages.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
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
ePrint ID: 263041
Date :
Date Event
2006Published
Date Deposited: 03 Oct 2006
Last Modified: 17 Apr 2017 21:32
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/263041

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