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List Sphere Decoding Combined with Linear Detection-Based Iterative Soft Interference Cancellation Via Exit Chart

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5 Author(s)
Xinglin Wang ; Beijing University of Posts and Telecommunications Beijing, China ; Kai Niu ; Zhiqiang He ; Weiling Wu
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Iterative list sphere decoding (LSD) can achieve near capacity on a multiple-antenna channel, however, with a rather high complexity. In order to reduce the complexity, in this paper, linear detection-based iterative soft interference cancellation (ISIC) instead of LSD is applied at the second and later iterations. We propose to exploit extrinsic information transfer (EXIT) chart analysis to select a specific ISIC to alleviate large performance degradation. Here MF-based and MMSE-base iterative soft interference cancellations (ISIC) are selected to be combined with the LSD. Simulation shows that the iterative combined detections have little signal-to-noise ratio (SNR) loss and a much lower complexity in comparison with iterative LSD

Published in:

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications

Date of Conference:

11-14 Sept. 2006