A LabVIEW-Based Implementation of Real-Time Adaptive Modulation for Underwater Acoustic OFDM Communication

Barua, Suchi; Rong, Yue; Nordholm, Sven; Chen, Peng

doi:10.1109/ieeeconf38699.2020.9389417

Cited by 3 publications

(2 citation statements)

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“…After that, depending on the thresholds, the transmission parameters are adaptively chosen for each frame/cluster and sent back to the transmitter for the next transmission. In [11,12], the proposed frame-based adaptive scheme enables the system to adaptively allocate the modulation size for each frame. The performance of the frame-based adaptive modulation scheme is verified with the simulation and tank experiment results in [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…In [11,12], the proposed frame-based adaptive scheme enables the system to adaptively allocate the modulation size for each frame. The performance of the frame-based adaptive modulation scheme is verified with the simulation and tank experiment results in [11,12]. In [13], a cluster-based adaptive modulation is proposed, where the system adaptively allocates the modulation size for each cluster.…”

Section: Introductionmentioning

confidence: 99%

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Real-Time Adaptive Modulation Schemes for Underwater Acoustic OFDM Communication

Barua

Rong

Nordholm

et al. 2022

Sensors

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Adaptive modulation received significant attention for underwater acoustic (UA) communication systems with the aim of increasing the system efficiency. It is challenging to attain a high data rate in UA communication, as UA channels vary fast, along with the environmental factors. For a time-varying UA channel, a self-adaptive system is an attractive option, which can choose the best method according to the channel condition to guarantee the continuous connectivity and high performance constantly. A real-time orthogonal frequency-division multiplexing (OFDM)-based adaptive UA communication system is presented in this paper, employing the National Instruments (NI) LabVIEW software and NI CompactDAQ device. In this paper, the received SNR is considered as a performance metric to select the transmission parameters, which are sent back to the transmitter for data transmission. In this research, a UA OFDM communication system is developed, employing adaptive modulation schemes for a nonstationary UA environment which allows to select subcarriers, modulation size, and allocate power adaptively to enhance the reliability of communication, guarantee continuous connectivity, and boost data rate. The recent UA communication experiments carried out in the Canning River, Western Australia, verify the performance of the proposed adaptive UA OFDM system, and the experimental results confirm the superiority of the proposed adaptive scheme.

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