article · IEICE Transactions on Communications · 2019

Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO

Satoshi Denno, Tsubasa Inoue, Kawaguchi Yuta, Takuya Fujiwara, Yafei Hou

Cited by 10Open access

Abstract

This paper proposes a low complexity soft input decoding in an iterative linear receiver for overloaded MIMO. The proposed soft input decoding applies two types of lattice reduction-aided linear filters to estimate log-likelihood ratio (LLR) in order to reduce the computational complexity. A lattice reduction-aided linear with whitening filter is introduced for the LLR estimation in the proposed decoding. The equivalent noise caused by the linear filter is mitigated with the decoder output stream and the LLR is re-estimated after the equivalent noise mitigation. Furthermore, LLR clipping is introduced in the proposed decoding to avoid the performance degradation due to the incorrect LLRs. The performance of the proposed decoding is evaluated by computer simulation. The proposed decoding achieves about 2dB better BER performance than soft decoding with the exhaustive search algorithm, so called the MLD, at the BER of 10-4, even though the complexity of the proposed decoding is 1/10 as small as that of soft decoding with the exhaustive search.

Cite this paper

APA 7

Denno, S., Inoue, T., Yuta, K., Fujiwara, T., & Hou, Y. (2019). Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO. IEICE Transactions on Communications, E103.B(5), 600–608. https://doi.org/10.1587/transcom.2019ebp3159

MLA 9

Denno, Satoshi, et al. “Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO.” IEICE Transactions on Communications, vol. E103.B, no. 5, 2019, pp. 600–08, https://doi.org/10.1587/transcom.2019ebp3159.

Chicago

Denno, Satoshi, Tsubasa Inoue, Kawaguchi Yuta, Takuya Fujiwara, and Yafei Hou. 2019. “Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO.” IEICE Transactions on Communications E103.B (5): 600–08. https://doi.org/10.1587/transcom.2019ebp3159.

Harvard

Denno, S. et al. (2019) ‘Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO’, IEICE Transactions on Communications, E103.B(5), pp. 600–608. Available at: https://doi.org/10.1587/transcom.2019ebp3159.

BibTeX

@article{denno2019complexity,
  title = {{Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO}},
  author = {Denno, Satoshi and Inoue, Tsubasa and Yuta, Kawaguchi and Fujiwara, Takuya and Hou, Yafei},
  journal = {IEICE Transactions on Communications},
  volume = {E103.B},
  number = {5},
  pages = {600--608},
  year = {2019},
  doi = {10.1587/transcom.2019ebp3159}
}

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