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Low Complexity Unitary Approximate Message Passing Based Equalization for OTFS System
编号：19 访问权限：仅限参会人 更新：2022-10-12 12:53:12 浏览：81次 口头报告

报告开始：2022年10月20日 15:00（Asia/Shanghai）

报告时间：15min

所在会场：[RS] Regular Session [RS5] RS5: Signal Processing for Communications (6)

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摘要
Orthogonal time frequency space (OTFS) modulation is a new promising two-dimensional (2D) modulation
technique for future wireless communication systems over high-mobility channels. To achieve the performance gain promised by
OTFS, the unitary approximate message passing (UAMP) based detector is widely used due to its robustness, low complexity and
superior performance. However, the complexity of the UAMP-based detector is high in the case of more practical waveforms,
such as the rectangular waveform, which hinders its practical implementation. In this work, we propose a low complexity
UAMP-based detector which inserts null symbols in the last few rows of the delay-Doppler domain according to the max delay of
the time-varying channel, and exploits the circulant property of the equivalent channel matrix to simplify the calculation
process of the UAMP detector. Simulation results show that the proposed detector has similar bit error rate (BER) performance
as compared with the original UAMP detector, but exhibits much lower complexity.
关键词
OTFS, UAMP, null-symbol, low-complexity, equalization
报告人
Futian Ni
Zhejiang University

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重要日期

  • 会议日期

    10月19日

    2022

    至

    10月22日

    2022

主办单位
Zhejiang University
承办单位
Zhejiang University
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