Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects
The choice of modulation techniques for next-generation communications in the sub-terahertz and terahertz bands remains largely unresolved. A variety of traditional and new schemes show promise, but the question remains open on the illustrative comparison process for realistic terahertz systems. Whi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of the Communications Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10365508/ |
| _version_ | 1797356430834008064 |
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| author | Claire T. Parisi Sherif Badran Priyangshu Sen Vitaly Petrov Josep Miquel Jornet |
| author_facet | Claire T. Parisi Sherif Badran Priyangshu Sen Vitaly Petrov Josep Miquel Jornet |
| author_sort | Claire T. Parisi |
| collection | DOAJ |
| description | The choice of modulation techniques for next-generation communications in the sub-terahertz and terahertz bands remains largely unresolved. A variety of traditional and new schemes show promise, but the question remains open on the illustrative comparison process for realistic terahertz systems. While there are some preliminary studies in this area, we emphasize that the peculiarities of terahertz hardware necessitate a scheme that (i) is resistant to system-wide phase noise (PN) and (ii) has a low peak-to-average power ratio (PAPR). Therefore, in this article, we present a comprehensive methodology to carefully model and jointly study the impacts of PN and PAPR on the performance of candidate modulations for terahertz links. We first deliver a mathematical model for sub-terahertz/terahertz phase noise impairments at 130 GHz, 225 GHz, and 1.02 THz based on measurements from actual terahertz hardware. We then introduce the PAPR penalty – an approach for fair comparison of bit error rate (BER) and spectral efficiency (SE) of modulation schemes with different PAPRs. We finally combine these two effects to comprehensively study the characteristics of single and multi-carrier modulation schemes for terahertz communications. Our study reveals that analyzing PAPR and PN jointly is paramount: accounting for only one leads to major deviations in the numerical results and misleading conclusions on best modulation choice(s). The delivered framework and evaluation should facilitate further studies, leading to a well-motivated selection of the most suitable modulation scheme(s) for prospective sub-terahertz and terahertz radio systems. |
| first_indexed | 2024-03-08T14:27:31Z |
| format | Article |
| id | doaj.art-d0d3c5c87a1849578e390416d8ee1358 |
| institution | Directory Open Access Journal |
| issn | 2644-125X |
| language | English |
| last_indexed | 2024-03-08T14:27:31Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Communications Society |
| spelling | doaj.art-d0d3c5c87a1849578e390416d8ee13582024-01-13T00:03:03ZengIEEEIEEE Open Journal of the Communications Society2644-125X2024-01-01541242910.1109/OJCOMS.2023.334441110365508Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR EffectsClaire T. Parisi0https://orcid.org/0009-0003-3534-8314Sherif Badran1https://orcid.org/0000-0002-4345-6329Priyangshu Sen2https://orcid.org/0000-0002-7618-5908Vitaly Petrov3https://orcid.org/0000-0002-5235-4420Josep Miquel Jornet4https://orcid.org/0000-0001-6351-1754Air Force Research Laboratory, Rome, NY, USADepartment of Electrical and Computer Engineering, Northeastern University, Boston, MA, USADepartment of Engineering, SUNY Polytechnic Institute, Utica, NY, USADepartment of Electrical and Computer Engineering, Northeastern University, Boston, MA, USADepartment of Electrical and Computer Engineering, Northeastern University, Boston, MA, USAThe choice of modulation techniques for next-generation communications in the sub-terahertz and terahertz bands remains largely unresolved. A variety of traditional and new schemes show promise, but the question remains open on the illustrative comparison process for realistic terahertz systems. While there are some preliminary studies in this area, we emphasize that the peculiarities of terahertz hardware necessitate a scheme that (i) is resistant to system-wide phase noise (PN) and (ii) has a low peak-to-average power ratio (PAPR). Therefore, in this article, we present a comprehensive methodology to carefully model and jointly study the impacts of PN and PAPR on the performance of candidate modulations for terahertz links. We first deliver a mathematical model for sub-terahertz/terahertz phase noise impairments at 130 GHz, 225 GHz, and 1.02 THz based on measurements from actual terahertz hardware. We then introduce the PAPR penalty – an approach for fair comparison of bit error rate (BER) and spectral efficiency (SE) of modulation schemes with different PAPRs. We finally combine these two effects to comprehensively study the characteristics of single and multi-carrier modulation schemes for terahertz communications. Our study reveals that analyzing PAPR and PN jointly is paramount: accounting for only one leads to major deviations in the numerical results and misleading conclusions on best modulation choice(s). The delivered framework and evaluation should facilitate further studies, leading to a well-motivated selection of the most suitable modulation scheme(s) for prospective sub-terahertz and terahertz radio systems.https://ieeexplore.ieee.org/document/10365508/Digital modulationOFDMOTFSPAPRphase noiseterahertz communications |
| spellingShingle | Claire T. Parisi Sherif Badran Priyangshu Sen Vitaly Petrov Josep Miquel Jornet Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects IEEE Open Journal of the Communications Society Digital modulation OFDM OTFS PAPR phase noise terahertz communications |
| title | Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects |
| title_full | Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects |
| title_fullStr | Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects |
| title_full_unstemmed | Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects |
| title_short | Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects |
| title_sort | modulations for terahertz band communications joint analysis of phase noise impact and papr effects |
| topic | Digital modulation OFDM OTFS PAPR phase noise terahertz communications |
| url | https://ieeexplore.ieee.org/document/10365508/ |
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