Underwater Acoustic Channel Estimation
Channel Estimation and Phase-Correction for Robust Underwater Acoustic Communications
... Instead of using PLL/DLL with symbol-by-symbol phase compensation [3] or passive phase conjugate [4], we equalize each channel first, then combine the SIMO data outputs, and then compens[r] ...
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A new joint channel equalization and estimation algorithm for underwater acoustic channels
... Sparse underwater acoustic channel, LMS, Channel estimation 1 Introduction With further exploration of ocean resources, underwater communication is playing a more critical role ...
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Fractional fourier based sparse channel estimation for multicarrier underwater acoustic communication system
... variant channel by providing DPS sequences basis, performs better than other types of BEM, because DPS sequences is set to approximate bandlimited channels over finite time windows, alleviating spectral leakage ...
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Fractional fourier based sparse channel estimation for multicarrier underwater acoustic communication system
... variant channel by providing DPS sequences basis, performs better than other types of BEM, because DPS sequences is set to approximate bandlimited channels over finite time windows, alleviating spectral leakage ...
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Soft-Decision-Driven Sparse Channel Estimation and Turbo Equalization for MIMO Underwater Acoustic Communications
... The arrival paths fluctuate very rapidly. It is important to notice that the channel impulse response is sparse. C. Performance versus the Training Overhead In order to investigate the convergence performance of ...
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Review Article: Multicarrier Communication for Underwater Acoustic Channel
... using underwater acoustic channel as the physical layer for communication systems, ranging from point-to-point communications to underwater multicarrier modulation ...for underwater ...
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Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications
... phase estimation and correction, the group size N s = 20 was used, and there were N g = 10 groups in one ...MIMO channel, N p previously detected symbols (part of them could be pilot symbols) of all streams ...
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Multiuser chirp modulation for underwater acoustic channel based on VTRM
... accurate channel estimation which also need to be studied in the ...multiuser underwater acoustic communication which differ from the traditional one and can be easy to be implementd into a ...
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Multibranch Autocorrelation Method for Doppler Estimation in Underwater Acoustic Channels
... Doppler estimation in multipath channels is based on computing the cross-ambiguity function (CAF) between received and transmitted signals ...of channel delays and Doppler compression ...Doppler ...
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Chirp-rate quasi-orthogonality based DSSS-CDMA system for underwater acoustic channel
... the underwater node positioning system, each user’s transmitted signal passes through the subchannel separately, and noise and random time delay are added to the ...performs channel estimation and ...
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Compressed Sensing Estimation of Underwater Acoustic MIMO Channels Based on Temporal Joint Sparse Recovery
... MIMO channel estimation; Co-channel interference; Distributed compress sensing; Simultaneous Orthogonal Matching Pursuit (SOMP) 1 引言 水声通信技术可用于海洋资源开发、海洋环境 立体监测、海洋组网通信等，在近年来得到了广泛 的应用和研究。多输入多输出水声通信技术可通过 ...
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An Underwater Acoustic Implementation of DFT-Spread OFDM
... signals, channel state information (CSI) must be available at the ...Added channel information via the use of pilot sequence, which is predefined, is frequently employed within OFDM systems ...The ...
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Capacity analysis of underwater acoustic MIMO communications
... MIMO underwater acoustic capacity provide capacity estimation using simulation and through the use of experimental data, but under the common assumption that a transmitter has knowledge of the ...
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Approximation Norm Estimations of Sparse Underwater Acoustic Channel
... The Doppler spread in UAC leads to the time selective fading, delay spread caus- es the frequency selective fading, both of the factors severely limit the performance of underwater acoustic communication. ...
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Underwater Acoustic Channel Characterization of Shallow Water Environment
... of channel propagation characteristics is a key to the optimal design of underwater acoustic ...of underwater acoustic channel is performed based on measurement result in certain ...
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Location Estimation of Nodes in Underwater Acoustic Sensor Networks
... 2 Department of Electronics and Communication, Basaveshwar Engineering College, Bagalkot, Karnataka, India https://doi.org/10.26636/jtit.2021.145720 Abstract—The paper presents a location estimation scheme for ...
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Title: Acoustic Underwater Wireless Sensor Networks: Channel Gain and Channel Communication
... The channel suffers from long and variable propagation delays, multi-path and vanishing problems; Bit error rates are normally tremendously high; Also, Submerged sensors are prone to recurrent wrecks because of ...
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Design of Underwater Acoustic Channel Model for OFDM Communication System
... of underwater acoustic channel model for OFDM communication ...The underwater acoustic channel considered includes multipath effect, attenuation loss, absorption loss, spreading ...
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OFDM over Underwater Acoustic Channel with Large and Small Scale Fading
... over underwater acoustic channel (UAC) subject to large and small scale ...submarine channel modeling follows Bellhop algorithm along with small scale ...submarine channel is compared ...
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Optimum Bit Rate for Image Transmission over Underwater Acoustic Channel
... UWA channel will be ...suggested underwater channel physical parameter according to Equation ...of channel relative delays and magnitudes for each ...
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