Abstract
High mobility and high spectrum efficiency are two main challenges for 5G communication. Many new technologies are proposed to meet these requirements. Orthogonal time frequency space (OTFS) is a novel scheme to combat the high Doppler effect under time-varying channel. In this paper, an index modulation based orthogonal time frequency space (OTFS-IM) system is proposed for improving BER performance under both high mobility and high spectrum efficiency. In the scheme, the information is conveyed by both constellation symbols and indices bits on Delay-Doppler domain. A low complexity detection strategy based on integrated MMSE-ML detection is proposed, which is very flexible and suitable to high spectrum efficiency signal. By simulation, compared with the conventional OTFS, the proposed OTFS-IM system can achieve better BER performance, maintaining good tolerability against Doppler effect, especially for higher spectral efficiency.
| Original language | English |
|---|---|
| Title of host publication | 2020 IEEE 91st Vehicular Technology Conference, VTC Spring 2020 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781728152073 |
| DOIs | |
| Publication status | Published - May 2020 |
| Externally published | Yes |
| Event | 91st IEEE Vehicular Technology Conference, VTC Spring 2020 - Antwerp, Belgium Duration: May 25 2020 → May 28 2020 |
Publication series
| Name | IEEE Vehicular Technology Conference |
|---|---|
| Volume | 2020-May |
| ISSN (Print) | 1550-2252 |
Conference
| Conference | 91st IEEE Vehicular Technology Conference, VTC Spring 2020 |
|---|---|
| Country/Territory | Belgium |
| City | Antwerp |
| Period | 5/25/20 → 5/28/20 |
Bibliographical note
Publisher Copyright:© 2020 IEEE.
ASJC Scopus Subject Areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Keywords
- index modulation
- mobility
- orthogonal time frequency space (OTFS)
- Time varying channels