Kuniyoshi, S.; Oshiro, S.; Yamada, H.; Saotome, R.; Wada, T. A 2‐Step Modified Delay and Doppler Profiler Based ICI Can‐Celing OFDM Receiver for Underwater Multi‐Path Channel. Preprints2024, 2024070480. https://doi.org/10.20944/preprints202407.0480.v1
APA Style
Kuniyoshi, S., Oshiro, S., Yamada, H., Saotome, R., & Wada, T. (2024). A 2‐Step Modified Delay and Doppler Profiler Based ICI Can‐Celing OFDM Receiver for Underwater Multi‐Path Channel. Preprints. https://doi.org/10.20944/preprints202407.0480.v1
Chicago/Turabian Style
Kuniyoshi, S., Rie Saotome and Tomohisa Wada. 2024 "A 2‐Step Modified Delay and Doppler Profiler Based ICI Can‐Celing OFDM Receiver for Underwater Multi‐Path Channel" Preprints. https://doi.org/10.20944/preprints202407.0480.v1
Abstract
In 2023, we proposed the modified Delay and Doppler Profiler (mDDP) as an inter-carrier interference (ICI) countermeasure for underwater acoustic OFDM mobile communications in a multipath environment. However, the performance improvement in computer simulation and pool experiments was not significant. In a subsequent study, the accuracy of the Channel Transfer Function (CTF), which is the input for the mDDP channel parameter estimation, was considered insufficient. Then a 2-step mDDP was devised. This paper presents simulations of underwater OFDM communications using 1- to 3-step mDDPs. The simulation conditions are a two-wave multipath environment where the receiving transducer moves at a speed of 0.3 m/sec and is subjected to a Doppler shift in the opposite direction. As NumCOL, the number of taps in the multi-tap equalizer which removes ICI, was increased, Bit Error Rate (BER) of 0.016 at NumCOL = 1 was significantly reduced by a factor of approximately 40 to BER of 0.00041 at NumCOL = 41 for the 2-step mDDP.
Copyright:
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