Comparison of the performance of LDPC codes over different underwater acoustic channels

Xu, Xiaomei; Chen, Yougan; Lan, Zhang; Feng, Wei

doi:10.1109/icct.2010.5689306

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…The unencoded BER can serve as a quick performance indicator to assess how likely the decoding will succeed. The researcher results show that LDPC code system has a better error correct performance and can achieve a better BER under the relative lower SNR [20].…”

Section: Low Density Parity Check Code (Ldpc)mentioning

confidence: 92%

“…The fast temporal variations, long multipath delay spreads, and severe frequency-dependent attenuations of underwater acoustic communication channels are extremely complex that impedes underwater acoustic data transmission. To alleviate this problem, channel coding is indispensable in UWA communication system to increase the reliability [20]. Also for underwater communication commonly used symbol demodulation schemes do not depend on the noise power, so bit error performance without error correcting coding will not be improved [21].…”

Section: Channel Coding Performance For Multicarrier Modulation In Unmentioning

confidence: 99%

“…Performances of LDPC codes with different parameters over different underwater acoustic communication channels are studied [20], by adjusting the encoding and decoding parameters according to different underwater acoustic channels.…”

Section: Low Density Parity Check Code (Ldpc)mentioning

confidence: 99%

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Review Article: Multicarrier Communication for Underwater Acoustic Channel

Esmaiel

Jiang

2013

IJCNS

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In past decades, there has been a growing interest in the discussion and study of using underwater acoustic channel as the physical layer for communication systems, ranging from point-to-point communications to underwater multicarrier modulation networks. A series of review papers were already available to provide a history of the development of the field until the end of the last decade. In this paper, we attempt to provide an overview of the key developments, both theoretical and applied, in the particular topics regarding multicarrier communication for underwater acoustic communication such as the channel and Doppler shift estimation, video and image transmission throw multicarrier techniques, etc. This paper also includes acoustic propagation properties in seawater and underwater acoustic channel representation.

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Section: Low Density Parity Check Code (Ldpc)mentioning

confidence: 92%

Section: Channel Coding Performance For Multicarrier Modulation In Unmentioning

confidence: 99%

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Review Article: Multicarrier Communication for Underwater Acoustic Channel

Esmaiel

Jiang

2013

IJCNS

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“…Compared with terrestrial radio channel, underwater acoustic channel, characterized by limited transmitting bandwidth, severe multipath effect, and great dependence on underwater bottom structure and surface wind wave is a statistical space-time slow variation channel, making it a very difficult medium for communication [2]. The technology is aimed at high speed and high reliability.…”

Section: Introductionmentioning

confidence: 98%

Design of Underwater Acoustic Modems through High Performance DSPs

Yan

2014

Proceedings of the International Conference on Underwater Networks %Systems - WUWNET '14

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In this paper, we present an acoustic modem hardware design through the use of a low power, high performance digital signal processor (DSP). The modem uses either MFSK or MPSK modulation methods for data transmission. The floating-point DSP, TMS320C6478, is used to transmit the modulated signal, perform demodulation, and support the network protocol. Several algorithms including Doppler shift correction, adaptive equalizer, and TURBO decoder are fully implemented in the DSP. A low-power, high performance Xilinx FPGA, XC6SLX45, is also used to handle the peripherals. When in the low power mode for the MFSK scheme, the acoustic modem has a power consumption of 0.8 watt. When performing the MPSK scheme, the total power consumption of the modem is 1.5 watt. The designed modems are currently used in our underwater acoustic network. General TermsUnder water acoustic networks, MFSK, MPSK, DSP, FPGA

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“…In [4,5], a combination of channel coding on the physical layer and network coding is considered. Also several channel codes have been investigated in an underwater scenario, e.g., convolutional codes in [6,7], Reed-Solomon codes in [7], low density parity check (LDPC) codes in [8,9], and (irregular) repeat accumulate ((I)RA) codes in [10,11], respectively. Due to the different message lengths and channels, the results of these works cannot be compared.…”

Section: Introductionmentioning

confidence: 99%

On Channel Codes for Short Underwater Messages

Falk

Bauch

Nissen³

2020

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Acoustic underwater communication is a challenging task. For a reliable transmission, not only good channel estimation and equalization, but also strong error correcting codes are needed. In this paper, we present the results of the coding competition “Wanted: Best channel codes for short underwater messages” as well as our own findings on the influence of the modulation alphabet size in the example of non-binary polar codes. Furthermore, the proposals of the competition are compared to other commonly used channel codes.

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Comparison of the performance of LDPC codes over different underwater acoustic channels

Cited by 8 publications

References 11 publications

Review Article: Multicarrier Communication for Underwater Acoustic Channel

Review Article: Multicarrier Communication for Underwater Acoustic Channel

Design of Underwater Acoustic Modems through High Performance DSPs

On Channel Codes for Short Underwater Messages

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