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Capacity and throughput analysis of nanoscale machine communication through transparency windows in the terahertz band

机译:通过太赫兹波段的透明窗口对纳米级机器通信的容量和吞吐量进行分析

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摘要

The expectedly very limited communication distance of nanoscale machines in the Terahertz Band (0.1 -10 THz) is one of the main factors narrowing the scope of the nanonetwork-ing applications. In this paper, the use of the transparency windows in the THz Band, which provide molecular-absorption-free transmission, is proposed as a way to extend the communication distance of nanomachines. The trade-offs between the signal-to-noise (SNR) ratio, channel capacity, transmission bandwidth and communication distance for these windows are identified. The results suggest that, by focusing on the first transparency window (0.1-0.54 THz), reliable communication up to 10 m is feasible when using just 0.1 aJ per symbol to achieve a capacity of up to 10 Mbps. For the same energy per symbol, when using the entire THz Band, the capacity is up to 2 Tbps, but only for distances below a few centimeters. Motivated by these results, the achievable link throughput of a simple binary digital modulation scheme based on the transmission of width-adaptive pulses is investigated. The results show that, due to the relaxation time of molecular absorption noise, additional pauses between pulse transmissions are required, but reliable communication is possible even for very small SNR values. These results extend the application scope of nanonetworks and illustrate that they are not limited to small coverage areas but can also be used to carry traffic generated by both low-rate transactional and bandwidth-greedy applications at small-to-medium distances.
机译:太赫兹频带(0.1 -10 THz)中纳米机器的预期通信距离非常有限,这是缩小纳米网络应用范围的主要因素之一。在本文中,提出了在THz波段中使用透明窗口(该窗口提供无分子吸收的传输)作为延长纳米机器的通信距离的方法。确定了这些窗口的信噪比(SNR),信道容量,传输带宽和通信距离之间的权衡。结果表明,通过专注于第一个透明窗口(0.1-0.54 THz),当每个符号仅使用0.1 aJ时,达到10 Mbps的容量时,长达10 m的可靠通信是可行的。对于每个符号相同的能量,使用整个THz频段时,容量最高可达2 Tbps,但仅适用于几厘米以下的距离。基于这些结果,研究了基于宽度自适应脉冲的传输的简单二进制数字调制方案可实现的链路吞吐量。结果表明,由于分子吸收噪声的弛豫时间,在脉冲传输之间需要额外的停顿,但是即使对于非常小的SNR值,也可以进行可靠的通信。这些结果扩展了纳米网络的应用范围,并说明了它们不仅限于较小的覆盖区域,而且还可以用于承载中小距离的低速率事务处理和带宽贪婪应用产生的流量。

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  • 来源
    《Nano communication networks》 |2014年第3期|72-82|共11页
  • 作者单位

    Nano Communication Center, Department of Electronics and Communications Engineering, Tampere University of Technology, Tampere, Finland,Communication Networks, St.Petersburg State University of Telecommunications, St.Petersburg, Russia;

    Nano Communication Center, Department of Electronics and Communications Engineering, Tampere University of Technology, Tampere, Finland,Broadband Wireless Networking Laboratory, School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA;

    Nano Communication Center, Department of Electronics and Communications Engineering, Tampere University of Technology, Tampere, Finland;

    Nano Communication Center, Department of Electronics and Communications Engineering, Tampere University of Technology, Tampere, Finland;

    Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA;

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

    Terahertz band; Ultra-broadband communications; Terabit-per-second (Tbps) links; Graphene;

    机译:太赫兹乐队;超宽带通信;每秒兆比特(Tbps)链接;石墨烯;

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