Orthogonal Time Frequency Space Modulation—Part II: Transceiver Designs

The fundamental concepts and challenges of orthogonal time frequency space (OTFS) modulation have been reviewed in Part I this three-part tutorial. In second part, we provide an overview the state-of-the-art transceiver designs for OTFS systems, with a particular focus on cyclic prefix (CP) design, window pulse shaping, channel estimation, signal detection. Furthermore, analyze performance modulation, including diversity gain achievable rate. Specifically, comparative simulations are presented to evaluate error different detection schemes, advantages coded systems over frequency-division multiplexing (OFDM) investigated.