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Ultrasonic Indexed Modulation and Multiple Access for Intra-Body Networks

机译：超声波索引调制和体内网络的多次访问

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摘要

Intra-body communication (IBC) plays a significant role in future health care systems. This article proposes a pulse-based ultrasonic index modulation (UsIM) to enable high data rate and low power IBCs. Two grouping-based UsIM strategies, namely ultrasonic grouped-chip indexed modulation (UsCIM) and ultrasonic chip-group indexed modulation (UsGIM), are proposed to implement multiple access for intra-body networks (IBNs). UsCIM uses the chip indices in a group to convey additional information bits for a biosensor node, while UsGIM uses the group indices and each node occupies one chip in a group. Three receivers, including the maximum likelihood (ML), the maximum ratio combination (MRC), and the energy detection (ED) receivers, are then proposed and studied. The theoretical bit-error rate (BER) upper bound for the ML receiver, and theoretical BER expressions for the MRC and ED receivers are derived. The system performance metrics in terms of complexity, throughput and energy efficiency are analyzed. The analytical and simulation results reveal that UsGIM achieves a lower BER than UsCIM under channel fading and multipath effect. Both UsCIM and UsGIM achieve higher throughput and energy efficiency than the existing IBC systems, and both strategies are important for energy-constrained implanted IBNs.
机译：体内通信（IBC）在未来的医疗保健系统中起着重要作用。本文提出了一种基于脉冲的超声折射率调制（USIM），以实现高数据速率和低功耗IBC。建议提出了两种基于组的USIM策略，即超声分组芯片索引调制（USCIM）和超声波芯片组索引调制（USGIM），以实现体内网络（IBN）的多次访问。 USCIM在组中使用芯片指数来传达生物传感器节点的附加信息位，而Usgim使用组指数，并且每个节点占据组中的一个芯片。然后提出并研究了三个接收器，包括最大可能性（ML），最大比例组合（MRC）和能量检测（ED）接收器。导出了ML接收器的理论误码率（BER），以及MRC和ED接收器的理论BER表达式。分析了系统性能指标，分析了复杂性，吞吐量和能量效率。分析和仿真结果表明，USGIM在信道衰落和多路径效应下比USCIM实现了较低的BER。 USCIM和USGIM都可以实现比现有IBC系统更高的吞吐量和能源效率，并且两种策略对于能量限制植入IBN很重要。

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  • 来源
    《IEEE Transactions on Communications》 |2021年第1期|108-120|共13页
  • 作者

    Wang Qianqian; Guan Quansheng; Cheng Julian; Ma Biyun;

  • 作者单位

    South China Univ Technol Sch Elect & Informat Engn Guangzhou 510640 Peoples R China|Minist Nat Resources Key Lab Marine Environm Survey Technol & Applicat Guangzhou 510300 Peoples R China;

    South China Univ Technol Sch Elect & Informat Engn Guangzhou 510640 Peoples R China|Minist Nat Resources Key Lab Marine Environm Survey Technol & Applicat Guangzhou 510300 Peoples R China;

    Univ British Columbia Sch Engn Kelowna BC V1V 1V7 Canada;

    South China Univ Technol Sch Elect & Informat Engn Guangzhou 510640 Peoples R China|Minist Nat Resources Key Lab Marine Environm Survey Technol & Applicat Guangzhou 510300 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ultrasonic communications; intra-body networks; index modulation; multiple access;

    机译：超声通信;体内网络;索引调制;多次访问;

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