Journal
IEEE WIRELESS COMMUNICATIONS LETTERS
Volume 10, Issue 12, Pages 2722-2726Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2021.3113507
Keywords
Receivers; Modulation; Transmitters; Molecular communication (telecommunication); Wireless communication; Interference; Entropy; Molecular communication; inter-symbol interference; modulation; achievable rate
Categories
Funding
- National Nature Science Foundation of China [61871190]
- Natural Science Foundation of Guangdong Province [2018B030306005]
- Open Research Fund of the National Mobile Communications Research Laboratory, Southeast University [2020D03]
- China Scholarship Council [202006150069]
- EPSRC [EP/P034284/1]
- EPSRC [EP/P034284/1] Funding Source: UKRI
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This study introduces molecular type permutation shift keying (MTPSK) and its enhanced version, which improve the achievable rate (AR) by using different permutations of molecular types. Numerical results show the advantage of this approach in combating interference.
Molecular type permutation shift keying (MTPSK) performs information transmission by the full permutations of different molecular types, which can combat the severe inter-symbol interference (ISI) in molecular communications. This letter proves that the achievable rate (AR) of MTPSK is restricted by its modulation principle and as a remedy proposes an enhanced (E-)MTPSK to improve the AR by conveying information through the permutations of partial molecular types. The exact and approximate ARs are derived for E-MTPSK, MTPSK, and molecular shift keying. Numerical results on ARs and bit error rates reveal the trade-off between the AR and ISI-mitigation capability, and that the proposed scheme can outperform the prevalent modulation counterparts.
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