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- W2787157239 abstract "Orthogonal time frequency space (OTFS) modulation is a 2-dimensional (2D) modulation scheme designed in the delay-Doppler domain, unlike traditional modulation schemes which are designed in the time-frequency domain. Through a series of 2D transformations, OTFS converts a doubly-dispersive channel into an almost non-fading channel in the delay-Doppler domain. In this domain, each symbol in a frame experiences an almost constant fade, thus achieving significant performance gains over existing modulation schemes such as OFDM. The sparse delay-Doppler impulse response which reflects the actual physical geometry of the wireless channel enables efficient channel estimation, especially in high-Doppler fading channels. This paper investigates OTFS from a signal detection and channel estimation perspective, and proposes a Markov chain Monte-Carlo sampling based detection scheme and a pseudo-random noise (PN) pilot based channel estimation scheme in the delay-Doppler domain." @default.
- W2787157239 created "2018-02-23" @default.
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- W2787157239 date "2018-02-03" @default.
- W2787157239 modified "2023-09-27" @default.
- W2787157239 title "On OTFS Modulation for High-Doppler Fading Channels" @default.
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- W2787157239 doi "https://doi.org/10.48550/arxiv.1802.00929" @default.
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