Multicarrier Communication Over Underwater Acoustic Channels With Nonuniform Doppler Shifts

Li, Baosheng; Zhou, Shengli; Stojanovic, Milica; Freitag, Lee; Willett, Peter

doi:10.1109/joe.2008.920471

Cited by 712 publications

(84 citation statements)

References 29 publications

(22 reference statements)

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“…While routinely used in many terrestrial systems (DSL, WLAN, Digital Audio/Video Broadcast, LTE, and standardized for the 4G cellular systems), OFDM has only recently begun to emerge in the acoustic world (Li et al, 2008). Recent years have seen a plethora of results, which attest to the fact that OFDM is a viable lowcomplexity alternative for combating the frequency selectivity of the acoustic channel.…”

Section: Multicarrier Modulation and Detectionmentioning

confidence: 99%

Recent Trends in Underwater Acoustic Communications

Stojanovic¹,

Freitag²

2013

mar technol soc j

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A B S T R A C TAdvances in underwater acoustic communications technology are being enabled by more access to in-water data and an infusion of new techniques, researchers, and students. In-water data collection is being made possible by robust funding in the United States, the European Union, and other countries, typically to multiorganization consortia working on both physical and network layer research. At the physical layer, single and multicarrier modulation methods continue to be refined, with a focus on both low signal-to-noise ratio, low-rate and high signal-to-noise ratio, high-rate data links. Establishment of performance metrics for adaptive equalizers and other parts of the physical layer continue, and recent work on high-fidelity channel models that mimic the effects of small-scale ocean processes indicates that progress is being made.Research in undersea acoustic networks continues to gain momentum as well, with multiple options available for integrating acoustic propagation models with network simulation, providing common frameworks for basing network design. The combination of these recent advances, plus continued interest by maritime science and industry in wireless communications, means that the field is poised to make new commercial breakthroughs in the next several years.

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Section: Multicarrier Modulation and Detectionmentioning

confidence: 99%

Recent Trends in Underwater Acoustic Communications

Stojanovic¹,

Freitag²

2013

mar technol soc j

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“…Direct-sequence code division multiple access (DS-CDMA) [1,2], orthogonal frequency-division multiplexing (OFDM) [1,[3][4][5], and multi-input multi-output (MIMO) [1,6], modulation and error correction [7], and others [8][9][10][11] techniques that can transmit high-speed data are mostly available in UWAC. However, none of these methods can guarantee good communication performance underwater.…”

Section: Introductionmentioning

confidence: 99%

DSSS-based Channel Access Technique DS-CDMA for Underwater Acoustic Transmission

Lee¹,

Moon

et al. 2015

Int. J. Fuzzy Log. Intell. Syst.

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This paper proposes a novel method for acoustically and wirelessly transmitting data underwater with a high transmission rate. The method uses the most promising physical layer and multiple access technique (i.e., the code division multiple channel access technique) to divide the channel into subchannels. Data is transmitted through these subchannels. The codes are pseudo-random noise (PN) sequences. In the spread-spectrum technique, a signal such as electrical, electromagnetic, acoustic signal generated in a particular bandwidth is deliberately spread in the frequency domain, which results in a signal with a wider bandwidth. This paper reviews the possibility of application of the direct-sequence code division multiple access (DS-CDMA) technique in an underwater system using MATLAB. As the result of our review, we recognize that the DS-CDMA technique can be applied to underwater environments.

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Section: Introductionmentioning

confidence: 99%

Measurement of DS-CDMA Propagation Distance in Underwater Acoustic Communication Considering Attenuation and Noise

Lee¹,

Moon

et al. 2015

Int. J. Fuzzy Log. Intell. Syst.

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It is very difficult to design an underwater communication system because of multipath, Doppler effects, noise, and attenuation. These factors lead to errors in the communication performance and maximum propagation distance. In this study, we calculate the distance that can be realized using the direct-sequence code division multiple access (DS-CDMA) technique with direct-sequence spread spectrum (DSSS) in an underwater communication system considering only the attenuation and noise. We also compare the estimated and calculated propagation distances obtained for several different scenarios.

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Multicarrier Communication Over Underwater Acoustic Channels With Nonuniform Doppler Shifts

Cited by 712 publications

References 29 publications

Recent Trends in Underwater Acoustic Communications

Recent Trends in Underwater Acoustic Communications

DSSS-based Channel Access Technique DS-CDMA for Underwater Acoustic Transmission

Measurement of DS-CDMA Propagation Distance in Underwater Acoustic Communication Considering Attenuation and Noise

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