Lin Chin-Feng, Wu Cheng-Fong, Hsieh Ching-Lung, Chang Shun-Hsyung, Parinov Ivan A, Shevtsov Sergey
Department of Electrical Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan.
Department of Microelectronics Engineering, National Kaohsuing University of Science and Technology, Kaohsuing 81157, Taiwan.
Sensors (Basel). 2021 Dec 31;22(1):313. doi: 10.3390/s22010313.
In this paper, a low-power underwater acoustic (UWA) image transceiver based on generalized frequency division multiplexing (GFDM) modulation for underwater communication is proposed. The proposed transceiver integrates a low-density parity-check code error protection scheme, adaptive 4-quadrature amplitude modulation (QAM) and 16-QAM strategies, GFDM modulation, and a power assignment mechanism in an UWA image communication environment. The transmission bit error rates (BERs), the peak signal-to-noise ratios (PSNRs) of the received underwater images, and the power-saving ratio (PSR) of the proposed transceiver obtained using 4-QAM and 16-QAM, with perfect channel estimation, and channel estimation errors (CEEs) of 5%, 10%, and 20% were simulated. The PSNR of the received underwater image is 44.46 dB when using 4-QAM with a CEE of 10%. In contrast, PSNR is 48.79 dB when using 16-QAM with a CEE of 10%. When BER is 10, the received UW images have high PSNR values and high resolutions, indicating that the proposed transceiver is suitable for underwater image sensor signal transmission.
本文提出了一种基于广义频分复用（GFDM）调制的低功耗水下声学（UWA）图像收发器，用于水下通信。所提出的收发器在UWA图像通信环境中集成了低密度奇偶校验码错误保护方案、自适应4正交幅度调制（QAM）和16-QAM策略、GFDM调制以及功率分配机制。使用4-QAM和16-QAM，在完美信道估计以及信道估计误差（CEE）为5%、10%和20%的情况下，对所提出收发器的传输误码率（BER）、接收水下图像的峰值信噪比（PSNR）以及功率节省率（PSR）进行了仿真。当使用CEE为10%的4-QAM时，接收水下图像的PSNR为44.46 dB。相比之下，当使用CEE为10%的16-QAM时，PSNR为48.79 dB。当BER为10时，接收的UW图像具有较高的PSNR值和高分辨率，表示所提出的收发器适用于水下图像传感器信号传输。
