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Computer Science > Information Theory

arXiv:1803.05844 (cs)
[Submitted on 15 Mar 2018 (v1), last revised 20 Aug 2018 (this version, v3)]

Title:Iterative Turbo Receiver for LDPC-Coded MIMO Systems Based on Semi-definite Relaxation

Authors:Kun Wang, Zhi Ding
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Abstract:In this work, we develop a new iterative turbo receiver for LDPC-coded multi-antenna systems based on semidefinite relaxation (SDR). For a classical turbo receiver, forward error correction (FEC) code is only used at decoder. Nonetheless, by taking advantage of FEC code in the detection stage, our proposed SDR detector can output extrinsic information with much improved reliability to the decoder. We also propose a simplified SDR turbo receiver that solves only one SDR problem per codeword instead of solving multiple SDR problems in the iterative turbo processing. This scheme significantly reduces the time complexity of SDR turbo receiver, while the error performance remains similar as before. In fact, our simplified scheme is generic in the sense that it is applicable to any list-based iterative receivers.
Comments: 6 pages, 4 figures, conference
Subjects: Information Theory (cs.IT)
Cite as: arXiv:1803.05844 [cs.IT]
  (or arXiv:1803.05844v3 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.1803.05844

Submission history

From: Kun Wang [view email]
[v1] Thu, 15 Mar 2018 16:41:44 UTC (280 KB)
[v2] Sun, 18 Mar 2018 04:37:58 UTC (279 KB)
[v3] Mon, 20 Aug 2018 06:08:46 UTC (477 KB)
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