Underwater Acoustic Multimedia Communication Based on MIMO–OFDM

Lin, Chin‐Feng; Chang, Shun‐Hsyung; Lee, Chia-Chang; Wu, Wen-Chin; Chang, Kao-Hung; Lee, Jenny Chih-Yu; Parinov, Ivan A.

doi:10.1007/s11277-012-0871-4

Cited by 16 publications

(4 citation statements)

References 31 publications

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“…The focus is on the realization of a transport layer and a cross layer approach to investigate how the fairness is influenced considering the impact of the configuration parameters of other layers has not received focus. An air interface system for the transmission of the multimedia content in the underwater environment is presented in [22]. The air interface system utilizes the orthogonal frequency division multiplexing method and its derivatives in an underwater acoustic channel.…”

Section: Existing Work-network Systems and Support For Multimedia Con...mentioning

confidence: 99%

Stratospheric platform applications: reduced cognitive load for multimedia and education

Periola

2024

Wireless Netw

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The proliferation of computing solutions in future communication networks leads to the occurrence of cognitive visual overstimulation (CVO). CVO occurrence arises in multimedia content editing and provisioning of Science, Technology, Engineering, and Mathematics (STEM) education. The presented research proposes a high-altitude platform-based architecture that enable multimedia content editing related to space themes, and insertion in the edge of space i.e., the stratosphere (space horizon) environment. The use of the proposed architecture in content editing and STEM education contexts reduces the CVO by an average of (22–84.1) % and (13.6–31.7) %, respectively. Investigations show that the proposed architecture reduces the latency by an average of 30.3%, and 49.4% considering individual, and multiple content access, respectively. The use of the proposed architecture also reduces the power consumption associated with multimedia content editing by (8.05–42.9) % on average.

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Section: Existing Work-network Systems and Support For Multimedia Con...mentioning

confidence: 99%

Stratospheric platform applications: reduced cognitive load for multimedia and education

Periola

2024

Wireless Netw

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“…The random binary signal models the raw information which would be transmitted and then the signal fed into transmitter [11]. After fed into the transmitter the transmitted signal is modulated using the modulation techniques.…”

Section: Figure 1 Proposed Ofdm Transceiver Systemmentioning

confidence: 99%

OFDM-System Design Using Adaptive Modulation and Channel Estimation for Underwater Acoustic Communication

G¹,

Sarvagya²

2016

IJFGCN

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“…These frequency selective channels are handled by various methodologies among them most effective ones are as using highly trained equalizers [14,15], or by dividing complete frequency selective channel into small orthogonal flat fading channel, (i.e. orthogonal frequency division multiplexing (OFDM)) [16][17][18], or using well designed orthogonal codes for transmission, i.e., code division multiple access [19] and other specialised techniques. Each technique has its own merit and demerit.…”

Section: Introductionmentioning

confidence: 99%

A prefix‐based approach for joint Doppler and channel estimation in underwater communication

Bhadouria,

Agrawal,

Kumar

2023

Int J Communication

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SummaryDeveloping a reliable and robust underwater acoustic communication system is a difficult task due to the complicated nature of the underwater channel, non‐stationary noise, and several other factors. Indeed, channel estimation or equalization presents numerous challenges in this non‐stationary, highly Doppler, multipath environment; as a result, traditional equalizers and PLL‐based methods have limited performance. Generally, communication over such time‐varying channels is accomplished via packets that contain a prefix/preamble signal for training, a payload containing the actual data, and a silent period for proper alignment. The prefix signal must be designed properly because it is used to estimate the channel and determine the start of the packet. In this paper, we propose a new prefix signal based on the hyperbolic chirp signal, which has Doppler invariance properties. These properties enable the extraction of the entire packet even under severe multipath and Doppler. Our new proposed prefix signal can accurately and efficiently characterize an underwater channel by estimating the multipath delay, amplitude, and Doppler scales. Our new method has been validated through extensive simulations using various channel models for its robustness and effectiveness under various conditions. It has also been tested on a real‐world channel.

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Underwater Acoustic Multimedia Communication Based on MIMO–OFDM

Cited by 16 publications

References 31 publications

Stratospheric platform applications: reduced cognitive load for multimedia and education

Stratospheric platform applications: reduced cognitive load for multimedia and education

OFDM-System Design Using Adaptive Modulation and Channel Estimation for Underwater Acoustic Communication

A prefix‐based approach for joint Doppler and channel estimation in underwater communication

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