4.6 Article

Orthogonal Time Frequency Space Modulation-Part II: Transceiver Designs

期刊

IEEE COMMUNICATIONS LETTERS
卷 27, 期 1, 页码 9-13

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2022.3209683

关键词

Channel estimation; Pulse shaping methods; Delays; Transceivers; Shape; OFDM; Modulation; OTFS; transceiver designs; performance analysis

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This article provides an overview of the state-of-the-art transceiver designs for OTFS systems, focusing on CP design, window design, pulse shaping, channel estimation, and signal detection. It also analyzes the performance of OTFS modulation, including diversity gain and achievable rate, and compares it with coded OFDM systems.
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.

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