Non-Uniform Doppler Compensation for Zero-Padded OFDM over Fast-Varying Underwater Acoustic Channels

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

doi:10.1109/oceanse.2007.4302478

Cited by 84 publications

(72 citation statements)

References 8 publications

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“…The block-by-block receiver does not rely on channel dependence across OFDM blocks, and thus it is robust to fast channel variations across OFDM blocks [29,30]. In contrast to single carrier phase-coherent transmission, OFDM has one desirable property that one signal design can be easily scaled to fit into different transmission bandwidths with negligible changes on the receiver [31].…”

Section: Multicarrier Modulationmentioning

confidence: 99%

“…Due to OFDM's unique strength in handling long dispersive channels with low equalization complexity, the combination of MIMO and OFDM is another appealing solution for high data rate transmission but with low receiver complexity. Reference [36] reports experimental results for a MIMO-OFDM system with two transmitters and four receivers, where the data rate is 12 kbps with a 12 kHz bandwidth, leading to a bandwidth efficiency of 1 bits/sec/Hz, after rate 1/2 coding and QPSK modulation, which doubles the efficiency of single antenna transmission in Reference [30] when using the same coding and modulation.…”

Section: Multi-input Multi-output Techniquesmentioning

confidence: 99%

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Prospects and problems of wireless communication for underwater sensor networks

Liu

Zhou

Cui

2008

Wireless Communications

365

101

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SummaryThis paper reviews the physical fundamentals and engineering implementations for efficient information exchange via wireless communication using physical waves as the carrier among nodes in an underwater sensor network (UWSN). The physical waves under discussion include sound, radio, and light. We first present the fundamental physics of different waves; then we discuss and compare the pros and cons for adopting different communication carriers (acoustic, radio, and optical) based on the fundamental first principles of physics and engineering practice. The discussions are mainly targeted at underwater sensor networks (UWSNs) with densely deployed nodes. Based on the comparison study, we make recommendations for the selection of communication carriers for UWSNs with engineering countermeasures that can possibly enhance the communication efficiency in specified underwater environments.

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Section: Multicarrier Modulationmentioning

confidence: 99%

Section: Multi-input Multi-output Techniquesmentioning

confidence: 99%

Prospects and problems of wireless communication for underwater sensor networks

Liu

Zhou

Cui

2008

Wireless Communications

365

101

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“…As in [4][5][6][7], we consider a zero-padded (ZP) OFDM transmission. The key steps at the transmitter are the following.…”

Section: Signal Designmentioning

confidence: 99%

“…Recently, multicarrier modulation in the form of orthogonal frequency division multiplexing (OFDM) has been actively pursued for underwater acoustic (UWA) communications, due to its unique ability to deal with high rate transmission over long dispersive channels [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The 16-QAM modulation was also tested in the settings with bandwidths 12 kHz, 25 kHz, and 50 kHz, leading to data rates about 12 kbps, 25 kbps, and 50 kbps, respectively. All the cases use the same block-by-block receiver that we have developed in [5,6]. In each case, excellent bit-error-rate (BER) performance is achieved after channel decoding over one or multiple receivers.…”

Section: Introductionmentioning

confidence: 99%

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Scalable OFDM design for underwater acoustic communications

Zhou

Huang

et al. 2008

2008 IEEE International Conference on Acoustics, Speech and Signal Processing

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Multicarrier modulation in the form of OFDM has been actively pursued for underwater acoustic communication recently. In this paper, we present a desirable property of OFDM that one signal design can be easily scaled to t into different transmission bandwidths with negligible changes on the receiver. We have tested the proposed design with data collected from experiments at AUV Fest, Panama City, FL, June 2007, and at the Buzzards Bay, MA, Aug. 2007. With QPSK modulation, we have used different bandwidths from 3 kHz to 50 kHz, leading to data rates from 1.5 kbps to 25 kbps after rate 1/2 coding. With 16-QAM modulation, we have used different bandwidths from 12 kHz to 50 kHz, leading to data rates from 12 kbps to 50 kbps. Excellent BER performance has been achieved, which con rms the exibility of OFDM under different system setups.

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Advances in Underwater Acoustic Networking

Melodia

Kulhandjian

Kuo

et al. 2013

Mobile Ad Hoc Networking

192

112

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The field of underwater acoustic networking is growing rapidly thanks to the key role it plays in many military and commercial applications. Among these are disaster prevention, tactical surveillance, offshore exploration, pollution monitoring and oceanographic data collection. The underwater acoustic propagation channel presents formidable challenges, including slow propagation of acoustic waves, limited bandwidth, high and variable propagation delay. Furthermore, it is affected by fading, Doppler spread and multipath propagation. Therefore, efficient protocol design tailored for underwater acoustic sensor networks entails many challenges across different layers of the networking protocol stack. The objective of this chapter is to provide an overview of the recent advances in underwater acoustic communication and networking. We briefly describe the typical communication architecture of an underwater network followed by a discussion on the basics of underwater acoustic propagation and the state of the art in acoustic communication techniques at the physical layer. We then present an overview of the recent advances in protocol design at the medium access control and network layers as well as in cross-layer design. Finally, we provide a detailed discussion of the existing underwater acoustic platforms for experimental evaluation of underwater acoustic networks.

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Non-Uniform Doppler Compensation for Zero-Padded OFDM over Fast-Varying Underwater Acoustic Channels

Cited by 84 publications

References 8 publications

Prospects and problems of wireless communication for underwater sensor networks

Prospects and problems of wireless communication for underwater sensor networks

Scalable OFDM design for underwater acoustic communications

Advances in Underwater Acoustic Networking

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