Interference Cancellation and Iterative Detection for Orthogonal Time Frequency Space Modulation

2018/02/14 by P. Raviteja, Raviteja, P., Khoa T. Phan +5 · 27 citations
Engineering · #Advanced Wireless Communication Techniques #FOS: Computer and information sciences #Information Theory (cs.IT) #PAPR reduction in OFDM #Radar Systems and Signal Processing

paper · pdf · doi:10.48550/arxiv.1802.05242

openalex publication_date 2018/02/14 · openalex created_date 2018/02/23 · openalex updated_date 2026/07/28

Abstract

The recently proposed orthogonal time frequency space (OTFS) modulation technique was shown to provide significant error performance advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. In this paper, we derive the explicit input-output relation describing OTFS modulation and demodulation (mod/demod) for delay-Doppler channels. We analyze the interferences and develop a novel low-complexity yet efficient message passing (MP) algorithm for joint interference cancellation (IC) and symbol detection. The proposed MP algorithm can effectively compensate for a wide range of channel Doppler spreads.

Citations

• OTFS: A New Generation of Modulation Addressing the Challenges of 5G

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• Low-Complexity Iterative Detection for Orthogonal Time Frequency Space Modulation
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