A universal interleaver design for bit-interleaved QC-LDPC coded modulation

Liu, Xiaojian; Wei, Yuejun; Jiang, Ming

doi:10.1109/wcsp.2017.8170954

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…This algorithm improves the robustness of the digital watermark on burst errors when combined with an RS code. In [40], an interleaver is introduced to reduce the decoding threshold when higher-order modulation is adopted. According to the simulation results, it works effectively for LDPC coded modulation.…”

Section: Interleavingmentioning

confidence: 99%

An overview of protected satellite communications in intelligent age

Wang

Zhang

et al. 2021

Sci. China Inf. Sci.

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Protected satellite communications (SatComs) exhibit specific characteristics such as security, intelligence, anti-jamming, and nuclear disaster survivability. They constitute one of the key research topics in modern military communications and have become the basic means for implementing strategic and tactical command and control. Currently, the United States military is using the latest advanced extremely high-frequency (AEHF) system to provide protected communications. Other countries are also employing their own protected SatCom systems to meet future operational requirements. Furthermore, in the modern intelligent age, many intelligent-related technologies are introduced into the protected SatCom systems to provide more secure and efficient communication services. In this paper, a comprehensive overview of the protected SatCom systems is presented. More specifically, a system overview of the protected SatComs is illustrated. Our focus is placed on the critical technologies and practical applications, and finally discuss remaining challenges and look forward to the future research directions. It is undoubted that the protected SatCom is one of the most important systems in military communications, both now and in the future.

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Section: Interleavingmentioning

confidence: 99%

An overview of protected satellite communications in intelligent age

Wang

Zhang

et al. 2021

Sci. China Inf. Sci.

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“…To verify the superiorities of the proposed SPMM interleaving scheme, two different types of state-of-the-art counterparts, i.e., VDMM [10] and universal matched mapping (UMM) [14], are used as benchmarks for performance comparison. As seen from Fig.…”

Section: B Ber Comparison Among Different Interleaving Schemesmentioning

confidence: 99%

“…Furthermore, an exhaustive-search-based method has been incorporated into VDMM so as to find the best permutation between the variable nodes (VNs) and the labeling bit positions [12]. In parallel with the above works, a variety of VN-degree-distribution-based and weightdistribution-based interleaving schemes have been developed in order to further enhance the performance of BICM systems [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Interleaver Design for Small-Coupling-Length Spatially Coupled Protograph LDPC-Coded BICM Systems Over Wireless Fading Channels

2020

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As a class of convolutional error-correction codes (ECCs), spatially coupled protograph low-density parity-check (SC-PLDPC) codes with a sufficiently large coupling length can approach the channel capacity under belief propagation (BP) decoding. However, such codes suffer from poor performance in the case of small coupling lengths. To address the above weakness, we investigate the optimization and analysis of SC-PLDPC-coded bit-interleaved coded modulation (BICM) systems over Rayleigh fading channels. Specially, inspired by the unequal-error-protection (UEP) mechanism of M-ary phase-shift keying/ quadrature amplitude modulation (M-PSK/QAM), we put forward a novel interleaver design scheme, referred to as spatial position match mapping (SPMM) scheme. Based on the mutual information (MI) analysis, the proposed interleaver can be used to significantly boost the performance of the SC-PLDPC codes in BICM systems. Furthermore, we propose a block-scheduling protograph-based extrinsic information transfer (BS-PEXIT) algorithm to estimate the convergence performance (i.e, decoding threshold) of the SPMM-aided SC-PLDPC codes in BICM scenarios. Simulation results are well consistent with the theoretical analyses, and show that the proposed SPMM-aided SC-PLDPC-coded BICM systems are superior to the state-of-the-art counterparts. INDEX TERMS Spatially coupled protograph low-density parity-check (SC-PLDPC) codes, bit-interleaved coded modulation (BICM), interleaver, wireless fading channels.

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