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面向异构多层多小区的多级服务质量跳频稀疏码分多址通信系统

曾琦 钟俊 刘星

曾琦, 钟俊, 刘星. 面向异构多层多小区的多级服务质量跳频稀疏码分多址通信系统[J]. 电子与信息学报, 2022, 44(9): 2977-2985. doi: 10.11999/JEIT211364
引用本文: 曾琦, 钟俊, 刘星. 面向异构多层多小区的多级服务质量跳频稀疏码分多址通信系统[J]. 电子与信息学报, 2022, 44(9): 2977-2985. doi: 10.11999/JEIT211364
ZENG Qi, ZHONG Jun, LIU Xing. Sparse Code Multiple Access Communication Networks Based on Multi-Level Quality-of-Service Frequency-hopping for Heterogeneous Multi-tier Multi-cell[J]. Journal of Electronics & Information Technology, 2022, 44(9): 2977-2985. doi: 10.11999/JEIT211364
Citation: ZENG Qi, ZHONG Jun, LIU Xing. Sparse Code Multiple Access Communication Networks Based on Multi-Level Quality-of-Service Frequency-hopping for Heterogeneous Multi-tier Multi-cell[J]. Journal of Electronics & Information Technology, 2022, 44(9): 2977-2985. doi: 10.11999/JEIT211364

面向异构多层多小区的多级服务质量跳频稀疏码分多址通信系统

doi: 10.11999/JEIT211364
基金项目: 国家自然科学基金(61701328, 61901288),保密通信国防科技重点实验室开放基金(6142103200106)
详细信息
    作者简介:

    曾琦:男,副教授,研究方向为非正交多址技术、uRLLc波形设计、干扰抑制技术

    钟俊:男,副教授,研究方向为无线通信技术、雷达信号处理

    刘星:男,助理研究员,研究方向为跳频系统、跳频序列、编码理论

    通讯作者:

    刘星 liuxing4@126.com

  • 中图分类号: TN914

Sparse Code Multiple Access Communication Networks Based on Multi-Level Quality-of-Service Frequency-hopping for Heterogeneous Multi-tier Multi-cell

Funds: The National Natural Science Foundation of China (61701328, 61901288), The Foundation of Science and Technology on Communication Security Laboratory of China (6142103200106)
  • 摘要: 该文主要解决未来大规模接入场景下,无线异构多层多小区通信网络设计及其多级服务质量(QoS)实现等问题。针对多层异构大规模接入网络的通信需求,该文提出一种基于跳频(FH)的稀疏码分多址接入(SCMA)多层异构传输方案(FH/SCMA)。该通信方案中,小区内大规模用户数据通过SCMA技术复用,异构网络的层间小区和层内小区通过跳频码分多址进行区分。由于传统跳频只能提供同一级别的频点碰撞率(即同一误码率),无法保证异构网络多级QoS需求, 因此该文进而提出一类新的具有两级汉明相关值的跳频序列集合,利用交织技术给出了这类跳频序列的设计方法。为了验证所提出的多级QoS跳频及其异构多层FH/SCMA通信性能,该文从序列设计和系统分析方面进行了严谨的理论分析和大量的仿真验证。研究表明,采用了新型跳频SCMA技术的多层异构网络可保证大规模用户接入、有效抑制多层小区干扰和衰落信道影响;同时,又可实现异构多层网络多级QoS传输质量需求(多级误码率(BER))。该文的研究成果从信号处理与传输角度,为多层异构网络设计及其多级QoS传输需求提供了有价值的解决方案。
  • 图  1  异构多层多小区无线通信网络架构(以两层QoS网络为例)

    图  2  传统SCMA系统码字传输与资源块示意图

    图  3  异构两层多小区FH/SCMA网络的收发端模型

    图  4  RBs中存在频率选择性衰落时两层FH/SCMA小区的误码率曲线

    图  5  最大接入时延D下,两层异构FH/SCMA网络的误码率性能

    图  6  HQoS层小区误码率受多层小区数的影响关系

    图  7  LQoS层小区误码率受多层小区数的影响关系

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出版历程
  • 收稿日期:  2021-11-30
  • 修回日期:  2022-03-30
  • 网络出版日期:  2022-04-18
  • 刊出日期:  2022-09-19

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