Minimum Symbol-Error Rate Based Adaptive Decision Feedback Equalizer in Underwater Acoustic Channels

Chen, Fangjiong; Lin, Shaoe; Zheng, Beixiong; Li, Qiang; Wen, Miaowen; Liu, Yun; Ji, Fei

doi:10.1109/access.2017.2772302

Cited by 16 publications

(7 citation statements)

References 26 publications

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“…The received signal is equalized to suppress the ISI. Here we use the adaptive DFE based on the MSER criterion [5]. Both the receiver and transmitter share the training data.…”

Section: System Modelmentioning

confidence: 99%

“…In this section, we compare the performance of the proposed scheme and the turbo equalization [5] through simulations, which use the same CIR as in [5]. We assume that the channel is time-invariant during a complete training and testing period.…”

Section: Simulation and Analysismentioning

confidence: 99%

“…The transmitter performs polar encoding at a coding rate of 1/2. For comparison, the turbo equalization uses the same amount of training data to update the equalizer coefficients, and then uses a 1/2-rate recursive systematic convolution (RSC) encoder with the generator polynomial [𝐺 1 , 𝐺 2 ] = [5,7] for one frame test data to perform convolutional encoding. The convolutional encoded sequence is transmitted through the pseudo-random interleaver.…”

Section: Simulation and Analysismentioning

confidence: 99%

“…It is suitable for UWA channels with long storage length and can effectively suppress the ISI. Combining adaptive DFE and turbo decoding is effective with the minimum symbol-error rate (MSER) criterion [5]. However, it is shown to be time-consuming [6,7].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Polar Coding Aided by Adaptive Channel Equalization for Underwater Acoustic Communication

et al. 2023

IEICE Trans. Fundamentals

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To improve the performance of underwater acoustic communications, this letter proposes a polar coding scheme with adaptive channel equalization, which can reduce the amount of feedback information. Furthermore, a hybrid automatic repeat request (HARQ) mechanism is provided to mitigate the impact of estimation errors. Simulation results show that the proposed scheme outperforms the turbo equalization in bit error rate. Computational complexity analysis is also provided for comparison.

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“…The received signal is equalized to suppress the ISI. Here we use the adaptive DFE based on the MSER criterion [5]. Both the receiver and transmitter share the training data.…”

Section: System Modelmentioning

confidence: 99%

Section: Simulation and Analysismentioning

confidence: 99%

Section: Simulation and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polar Coding Aided by Adaptive Channel Equalization for Underwater Acoustic Communication

et al. 2023

IEICE Trans. Fundamentals

Self Cite

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“…When n − (i + m) < n − k, that means i > k − m, only k − i bits of the previous bit pattern can be obtained. At this point, assuming that the remaining previous bits are '0', there are k − i previous bits that determine the value of w i , as shown in (11) and (12). The structure diagram of the DFE when i > k − m is shown in Fig.…”

Section: B Strcuture Of the Novel Dfe Based On Mbrmentioning

confidence: 99%

A Novel Decision Feedback Equalization Structure for Nonlinear High-Speed Links

Chu

Wang

et al. 2020

IEEE Access

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As the degree of nonlinearity in high-speed links becomes more and more serious, traditional decision feedback equalization (DFE) which is based on linear time-invariant assumption can no longer eliminate the inter-symbol interference effectively. In this paper, the shortcomings of traditional DFE structure for nonlinear high-speed links are first analyzed. Then, the multi-bit response (MBR) method is proposed to accurately construct the bit stream responses of the nonlinear high-speed links. Lastly, a novel DFE structure based on the MBR method is presented to improve the signal quality of the nonlinear high-speed links. The accuracy of the proposed method is verified by the simulation based on a nonlinear high-speed link model. Compared with traditional DFE, the proposed DFE structure can significantly improve the signal quality of the nonlinear high-speed links. As the degree of nonlinearity increases, the advantage of the proposed DFE becomes more prominent. INDEX TERMS Decision feedback equalization (DFE), inter-symbol interference (ISI), multi-bit response, nonlinearity, signal integrity.

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Frequency domain direct adaptive turbo equalization based on block normalized minimum-SER for underwater acoustic communications

et al. 2023

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Minimum Symbol-Error Rate Based Adaptive Decision Feedback Equalizer in Underwater Acoustic Channels

Cited by 16 publications

References 26 publications

Polar Coding Aided by Adaptive Channel Equalization for Underwater Acoustic Communication

Polar Coding Aided by Adaptive Channel Equalization for Underwater Acoustic Communication

A Novel Decision Feedback Equalization Structure for Nonlinear High-Speed Links

Frequency domain direct adaptive turbo equalization based on block normalized minimum-SER for underwater acoustic communications

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