OFDM with index modulation for asynchronous mMTC networks
| dc.authorid | 0000-0002-5471-2703 | |
| dc.authorid | 0000-0001-9579-9342 | |
| dc.authorid | 0000-0001-9474-7372 | |
| dc.contributor.author | Doğan, Seda | |
| dc.contributor.author | Tusha, Armed | |
| dc.contributor.author | Arslan, Hüseyin | |
| dc.date.accessioned | 2021-01-15T12:27:52Z | |
| dc.date.available | 2021-01-15T12:27:52Z | |
| dc.date.issued | 2018 | |
| dc.department | İstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü | |
| dc.description.abstract | One of the critical missions for next-generation wireless communication systems is to fulfill the high demand for massive Machine-Type Communications (mMTC). In mMTC systems, a sporadic transmission is performed between machine users and base station (BS). Lack of coordination between the users and BS in time destroys orthogonality between the subcarriers, and causes inter-carrier interference (ICI). Therefore, providing services to asynchronous massive machine users is a major challenge for Orthogonal Frequency Division Multiplexing (OFDM). In this study, OFDM with index modulation (OFDM-IM) is proposed as an eligible solution to alleviate ICI caused by asynchronous transmission in uncoordinated mMTC networks. In OFDM-IM, data transmission is performed not only by modulated subcarriers but also by the indices of active subcarriers. Unlike classical OFDM, fractional subcarrier activation leads to less ICI in OFDM-IM technology. A novel subcarrier mapping scheme (SMS) named as Inner Subcarrier Activation is proposed to further alleviate adjacent user interference in asynchronous OFDM-IM-based systems. ISA reduces inter-user interference since it gives more activation priority to inner subcarriers compared with the existing SMS-s. The superiority of the proposed SMS is shown through both theoretical analysis and computer-based simulations in comparison to existing mapping schemes for asynchronous systems. | |
| dc.identifier.citation | Doğan, S., Tusha, A. ve Arslan, H. (2018). OFDM with index modulation for asynchronous mMTC networks. Sensors, 18(4). https://dx.doi.org/10.3390/s18041280 | |
| dc.identifier.doi | 10.3390/s18041280 | |
| dc.identifier.issn | 1424-8220 | |
| dc.identifier.issue | 4 | |
| dc.identifier.scopusquality | Q2 | |
| dc.identifier.uri | https://dx.doi.org/10.3390/s18041280 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12511/6263 | |
| dc.identifier.volume | 18 | |
| dc.identifier.wosquality | Q1 | |
| dc.indekslendigikaynak | Web of Science | |
| dc.indekslendigikaynak | Scopus | |
| dc.indekslendigikaynak | PubMed | |
| dc.language.iso | en | |
| dc.publisher | MDPI | |
| dc.relation.ispartof | Sensors | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | |
| dc.rights | Attribution 4.0 International | * |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
| dc.subject | Asynchronous Transmission | |
| dc.subject | Massive Machine-Type Communication (Mmtc) | |
| dc.subject | Orthogonal Frequency Division Multiplexing (OFDM) | |
| dc.subject | OFDM With Index Modulation (OFDM-IM) | |
| dc.title | OFDM with index modulation for asynchronous mMTC networks | |
| dc.type | Article |
