Abstract
The fundamental concepts and challenges of orthogonal time frequency space (OTFS) modulation have been reviewed in Part I of this three-part tutorial. In this second part, we provide an overview of the state-of-the-art transceiver designs for OTFS systems, with a particular focus on the cyclic prefix (CP) design, window design, pulse shaping, channel estimation, and signal detection. Furthermore, we analyze the performance of OTFS modulation, including the diversity gain and the achievable rate. Specifically, comparative simulations are presented to evaluate the error performance of different OTFS detection schemes, and the advantages of coded OTFS systems over coded orthogonal frequency-division multiplexing (OFDM) systems are investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 9-13 |
| Number of pages | 5 |
| Journal | IEEE Communications Letters |
| Volume | 27 |
| Issue number | 1 |
| Early online date | 26 Sept 2022 |
| DOIs | |
| Publication status | Published - Jan 2023 |
| Externally published | Yes |
Bibliographical note
This work is supported in part by National Natural Science Foundation of China under Grant 62101232, and in part by the Guangdong Provincial Natural Science Foundation under Grant 2022A1515011257. The work of R. Schober and G. Caire is supported by the Federal Ministry of Education and Research (BMBF) Germany in the program of “Souverän. Digital. Vernetzt.” Joint Project 6G-RIC (Project IDs 16KISK030 and 16KISK023).Keywords
- OTFS
- performance analysis
- transceiver designs