Analysis and Optimization of Tail-Biting Spatially Coupled Protograph LDPC Codes for BICM-ID Systems.
In: IEEE Transactions on Vehicular Technology, Jg. 69 (2020), Heft 1, S. 390-404
Online
academicJournal
Zugriff:
As a typical example of bandwidth-efficient techniques, bit-interleaved coded modulation with iterative decoding (BICM-ID) provides desirable spectral efficiencies in various wireless communication scenarios. In this paper, we carry out a comprehensive investigation on tail-biting (TB) spatially coupled protograph (SC-P) low-density parity-check (LDPC) codes in BICM-ID systems. Specifically, we first develop a two-step design method to formulate a novel type of constellation mappers, referred to as labeling-bit-partial-match (LBPM) constellation mappers, for SC-P-based BICM-ID systems. The LBPM constellation mappers can be seamlessly combined with high-order modulations, such as $M$ -ary phase-shift keying (PSK) and $M$ -ary quadrature amplitude modulation (QAM). Furthermore, we conceive a new bit-level interleaving scheme, referred to as variable node matched mapping (VNMM) scheme, which can substantially exploit the structure feature of SC-P codes and the unequal protection-degree property of labeling bits to trigger the wave-like convergence for TB-SC-P codes. In addition, we propose a hierarchical extrinsic information transfer (EXIT) algorithm to predict the convergence performance (i.e., decoding thresholds) of the proposed SC-P-based BICM-ID systems. Theoretical analyses and simulation results illustrate that the LBPM-mapped SC-P-based BICM-ID systems are remarkably superior to the state-of-the-art mapped counterparts. Moreover, the proposed SC-P-based BICM-ID systems can achieve even better error performance with the aid of the VNMM scheme. As a consequence, the proposed LBPM constellation mappers and VNMM scheme make the SC-P-based BICM-ID systems a favorable choice for the future-generation wireless communication systems. [ABSTRACT FROM AUTHOR]
Titel: |
Analysis and Optimization of Tail-Biting Spatially Coupled Protograph LDPC Codes for BICM-ID Systems.
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Autor/in / Beteiligte Person: | Yang, Zhaojie ; Fang, Yi ; Zhang, Guohua ; Lau, Francis C. M. ; Mumtaz, Shahid ; da Costa, Daniel B. |
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Zeitschrift: | IEEE Transactions on Vehicular Technology, Jg. 69 (2020), Heft 1, S. 390-404 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0018-9545 (print) |
DOI: | 10.1109/TVT.2019.2949600 |
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