Relay-assisted nanoscale communication in the THz band

Micro & nano letters

article

Zhichao Rong¹  Mark Stephen Leeson¹  Matthew David Higgins¹ 

[1] School of Engineering, University of Warwick

关键词: nanotechnology;    relay networks (telecommunication);    wireless sensor networks;    nanosensors;    amplify and forward communication;    decode and forward communication;    error statistics;    cooperative communication;    Monte Carlo methods;    relay-assisted nanoscale communication;    THz band;    bit error rate;    BER performance;    cooperative relaying transmission scheme;    wireless nanosensor networks;    terahertz band;    graphene-based devices;    amplify-and-forward relaying modes;    decode-and-forward relaying modes;    DF relaying modes;    AF relaying modes;    line-of-sight channel model;    LOS model;    molecular absorption loss;    spreading loss;    path loss;    Monte Carlo method;   

DOI  :  10.1049/mnl.2017.0016

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The bit error rate (BER) performance of a cooperative relaying transmission scheme for wireless nanosensor networks in the terahertz (THz) band is investigated. Nanosensor networks comprising several graphene-based devices deployed at the nanoscale are considered. Both amplify-and-forward (AF) and decode-and-forward (DF) relaying modes are studied. A line-of-sight (LOS) channel model in the THz band is considered which takes into account both spreading loss and molecular absorption loss. Given the high path loss and level of noise from significant random fluctuations through the THz channel, relay-assisted schemes offer advantages in terms of significant performance improvements. To quantify the likely benefits, the predicted BER of the proposed scheme is derived. A simulation of the proposed relay schemes based on the THz LOS channel model utilising a Monte Carlo method is conducted. The results obtained show that a performance improvement of 2.2 dB for AF and of 5 dB for DF is achievable at a target BER of 10−5.

【 授权许可】

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