Direct Adaptive Equalization with CFO Pre-compensation for Single-Carrier Underwater Acoustic Communications
ID:117 View Protection:ATTENDEE Updated Time:2020-08-05 10:17:28 Hits:419 Oral Presentation

Start Time:2020-06-08 14:40(Asia/Shanghai)

Duration:20min

Session:S Special Session » SS03Multi-Sensor Data Fusion For Underwater Application

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Abstract
For single-carrier underwater acoustic (UWA) communications, phase correction is critical to the symbol detection on the receiver side. Existing receiver schemes either run a phase-locked loop (PLL) in parallel to an equalizer or perform a subsequent phase correction next to the equalizer. Both parallel and subsequent phase correction methods suffer limitations in practical use. In this work, we propose to introduce a carrier frequency offset (CFO) pre-compensation module to existing receivers, with the CFO estimated with an m-sequence. The so-obtained receiver scheme was tested by real data collected in an at-sea UWA communication trial. Experimental results verified the extra performance gain brought by the CFO pre-compensation. In the particular scenario that the CFO is the main source of the phase rotation, conventional CFO correction modules like the PLL can be dropped in light of the inclusion of the CFO pre-compensation.
Keywords
Speaker
Jun Tao
Southeast University, China

Submission Author
Jun Tao Southeast University, China
Fengzhong Qu Zhejiang University, China
Hongtao Zhang Hangzhou Appiled Acoustics Research Institute, China
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  • Conference Date

    Jun 08

    2020

    to

    Jun 11

    2020

  • Jan 12 2020

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  • Apr 15 2020

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  • Dec 31 2020

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