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<p>Future wireless communication networks are characterized by the heterogeneous multi-tier infrastructure, which can support the various levels of quality-of-services (QoSs) for different tiers/users. In this paper, we propose a novel type of hierarchical frequency-hopping (FH) technique to achieve the multi-level QoSs target by flexibly controlling its Hamming auto-and cross-correlations values. A construction algorithm of hierarchical FH sequence (FHS) set is designed via the series of mathematical transformations based on a given optimal pseudo-random FHS set, then its hierarchical Hamming correlation properties are exactly depicted in Theorem 1. As a study case, the developed FHS set is employed in asynchronous and heterogeneous multi-tier uplinks based on hopped-subcarrier OFDM (FH/OFDM) signals. The simulated results reveal that the proposed hierarchical FHS can provide multi-level bit-error-rates (BERs) for various tiers networks; meanwhile, it attains the superior transmission quality by significantly suppressing the inter- and intra-tier interference.</p>

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Hierarchical frequency hopping for heterogeneous multi-tier networks: Sequence design and performance analysis

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Qi Zeng,
  • Peiyi Zhao,
  • Lei Zhang,
  • Xing Liu,
  • Changyuan Wang

摘要

Future wireless communication networks are characterized by the heterogeneous multi-tier infrastructure, which can support the various levels of quality-of-services (QoSs) for different tiers/users. In this paper, we propose a novel type of hierarchical frequency-hopping (FH) technique to achieve the multi-level QoSs target by flexibly controlling its Hamming auto-and cross-correlations values. A construction algorithm of hierarchical FH sequence (FHS) set is designed via the series of mathematical transformations based on a given optimal pseudo-random FHS set, then its hierarchical Hamming correlation properties are exactly depicted in Theorem 1. As a study case, the developed FHS set is employed in asynchronous and heterogeneous multi-tier uplinks based on hopped-subcarrier OFDM (FH/OFDM) signals. The simulated results reveal that the proposed hierarchical FHS can provide multi-level bit-error-rates (BERs) for various tiers networks; meanwhile, it attains the superior transmission quality by significantly suppressing the inter- and intra-tier interference.