Near-Optimal BEM OTFS Receiver With Low Pilot Overhead for High-Mobility Communications

• Published in: IEEE transactions on communications Vol. 70; no. 5; pp. 3392 - 3406
• Main Authors: Liu, Yujie, Guan, Yong Liang, G., David Gonzalez
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: basis expansion model (BEM); Bit error rate; Channel estimation; Doppler shift; Doppler spread; doubly-selective fading channel; Equalization; Fading channels; generalized complex exponential BEM (GCE-BEM); Lower bounds; OFDM; Orthogonal time frequency space (OTFS); Receivers; Simulation; Time-frequency analysis

In this paper, a new receiver design based on basis expansion model (BEM) orthogonal time frequency space (OTFS) is presented for high-mobility communications with Doppler-spread channel. By deriving an analytical BEM OTFS system model, a low-order generalized complex exponential BEM (GCE-BEM) aided...