Interference mitigation enabled signal detection in diffusive molecular communications systems with molecular type spreading
Interference mitigation enabled signal detection in diffusive molecular communications systems with molecular type spreading
To accomplish complex tasks, several nano-machines may need to communicate via multiple-access channel with one access point, where information fusion is carried out. However, multiple-access diffusive molecular communications (DMC) systems suffer from severe multiple-access interference (MAI) and intersymbol interference (ISI), which should be effectively mitigated at receiver in order to achieve acceptable performance. Built on two fundamental single-user detection schemes, namely, threshold-assisted majority vote detection (TMVD) and equal gain combination detection (EGCD), we first propose three low-complexity interference cancelation schemes, which are the TMVD-assisted iterative interference cancelation (TMVD-IIC), TMVD-based minimum-distance decoding-assisted interference cancelation (TMVD-MDDIC) and the EGCD-assisted N-order iterative interference cancelation (EGCD-NIIC), for operation in the molecular-type spread-assisted molecular shift keying (MTS-MoSK) DMC systems. Then, following the principle of maximum likelihood (ML) detection, we propose a simplified approximate ML (SAML) detection scheme. The error performance of the MTS-MoSK DMC systems employing, respectively, the considered detection schemes is comprehensively investigated and compared. Furthermore, the complexities of the detection schemes are analyzed and discussed in terms of the complexity-performance tradeoff. Our studies and results show that, compared with the single-user TMVD and EGCD schemes, the proposed interference cancelation schemes are capable of mitigating efficiently the effect of MAI and enabling significant performance improvement at the slightly increased complexity.
Iterative decoding, codes, complexity theory, diffusive molecular communications, equal gain combining, error performance, inter-symbol interference, interference cancellation, majority vote, minimum-distance decoding, molecular shift keying, molecular type spreading, monte Carlo methods, multiple-access interference, nanobioscience, receivers, molecular shift keying (MoSK), intersymbol interference (ISI), molecular-type spreading (MTS), interference cancelation, Diffusive molecular communications, equal gain combining (EGC), multiple-access interference (MAI)
13849-13864
Gao, Weidong
72b00044-c3dd-4e76-a8b6-851f53751e9b
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
1 August 2023
Gao, Weidong
72b00044-c3dd-4e76-a8b6-851f53751e9b
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Gao, Weidong and Yang, Lie-Liang
(2023)
Interference mitigation enabled signal detection in diffusive molecular communications systems with molecular type spreading.
IEEE Internet of Things Journal, 10 (15), .
(doi:10.1109/JIOT.2023.3263223).
Abstract
To accomplish complex tasks, several nano-machines may need to communicate via multiple-access channel with one access point, where information fusion is carried out. However, multiple-access diffusive molecular communications (DMC) systems suffer from severe multiple-access interference (MAI) and intersymbol interference (ISI), which should be effectively mitigated at receiver in order to achieve acceptable performance. Built on two fundamental single-user detection schemes, namely, threshold-assisted majority vote detection (TMVD) and equal gain combination detection (EGCD), we first propose three low-complexity interference cancelation schemes, which are the TMVD-assisted iterative interference cancelation (TMVD-IIC), TMVD-based minimum-distance decoding-assisted interference cancelation (TMVD-MDDIC) and the EGCD-assisted N-order iterative interference cancelation (EGCD-NIIC), for operation in the molecular-type spread-assisted molecular shift keying (MTS-MoSK) DMC systems. Then, following the principle of maximum likelihood (ML) detection, we propose a simplified approximate ML (SAML) detection scheme. The error performance of the MTS-MoSK DMC systems employing, respectively, the considered detection schemes is comprehensively investigated and compared. Furthermore, the complexities of the detection schemes are analyzed and discussed in terms of the complexity-performance tradeoff. Our studies and results show that, compared with the single-user TMVD and EGCD schemes, the proposed interference cancelation schemes are capable of mitigating efficiently the effect of MAI and enabling significant performance improvement at the slightly increased complexity.
Text
IoT-25495-2022
- Accepted Manuscript
More information
Accepted/In Press date: 25 March 2023
Published date: 1 August 2023
Additional Information:
Funding Information:
This work was supported by the Engineering and Physical Sciences Research Council under Project EP/X01228X/1.
Publisher Copyright:
© 2014 IEEE.
Keywords:
Iterative decoding, codes, complexity theory, diffusive molecular communications, equal gain combining, error performance, inter-symbol interference, interference cancellation, majority vote, minimum-distance decoding, molecular shift keying, molecular type spreading, monte Carlo methods, multiple-access interference, nanobioscience, receivers, molecular shift keying (MoSK), intersymbol interference (ISI), molecular-type spreading (MTS), interference cancelation, Diffusive molecular communications, equal gain combining (EGC), multiple-access interference (MAI)
Identifiers
Local EPrints ID: 476705
URI: http://eprints.soton.ac.uk/id/eprint/476705
ISSN: 2327-4662
PURE UUID: a3559414-af29-4ae4-ac0f-3d1bc8d53c2d
Catalogue record
Date deposited: 11 May 2023 16:59
Last modified: 17 Mar 2024 02:47
Export record
Altmetrics
Contributors
Author:
Weidong Gao
Author:
Lie-Liang Yang
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics