Výsledky vyhľadávania - "delay/Doppler-spread function"

Non-Stationary 3D M2M Channel Modeling and Verification With Aircraft-to-Aircraft, Drone-to-Drone, Vehicle-to-Vehicle, and Ship-to-Ship Measurements Autor Bellido-Manganell, Miguel A., Walter, Michael

“…Mobile-to-mobile (M2M) propagation channels have gained significant attention over the last years with the development of advanced communication systems for…”
Získať plný text

Estimation of Rapidly Time-Varying Sparse Channels Autor Weichang Li, Preisig, J.C.

“…, and the Dopplers of each arrival all change dynamically. A sparse channel estimation technique is developed based on the delay-Doppler-spread function representation of the channel…”
Získať plný text

Estimation of Overspread Underwater Acoustic Channel Based on Low-Rank Matrix Recovery Autor Li, Jie, Chen, Fangjiong, Liu, Songzuo, Yu, Hua, Ji, Fei

“…) channels of strong dispersion is considered. We show that although the UWA channel dispersion causes the degeneration of channel sparsity, it leads to a low-rank structure especially when the channel delay-Doppler-spread function is separable…”
Získať plný text

Tracking channel variations in a time-varying doubly-spread underwater acoustic channel Autor Huang, S. H., Yang, T. C., Xu, W.

“…Channel impulse responses (CIRs) are estimated for a doubly-spread acoustic channel in this paper by (1) estimating explicitly the path-dependent Doppler…”
Získať plný text

On Sparse Bayesian Spreading Function Estimation Based Iterative Detection in Multiple-Input Multiple-Output Underwater Acoustic Communications Autor Qin, Xiangzhao, Qu, Fengzhong, Wu, Yezhou, Ma, Dongfang

“… Delay-Doppler-spread function based sparse channel estimation approach is proposed. The dominant components on the delay-Doppler plane are identified using the sparse Bayesian learning (SBL…”
Získať plný text

Fast estimation of sparse doubly spread acoustic channels Autor Zeng, Wen-Jun, Xu, Wen

“…) that can handle complex-valued data for estimating the delay-Doppler spread function of a time-varying channel…”
Zistit podrobnosti o prístupe

Identification and matching of sparse Delay-Doppler Spread Functions from high-frequency communications signals Autor Zamanizadeh, E, Gomes, João, Bioucas-Dias, José M

“… We view underwater channels as time-varying linear systems and characterize them by their Delay-Doppler Spread Functions (DDSF…”
Získať plný text

Sparse Underwater Acoustic Channel Parameter Estimation Using a Wideband Receiver Array Autor Byun, Sung-Hoon, Seong, Woojae, Kim, Sea-Moon

“… Multichannel signals from a receiver array are modeled to obtain additional sparsity in the incidence angle and the angle-delay-Doppler-spread function is defined to parameterize the channel…”
Získať plný text

Joint Estimation of Carrier Frequency Offset and Channel Impulse Response for Linear Periodic Channels Autor Shaked, Roee, Shlezinger, Nir, Dabora, Ron

“… When the coefficients of the delay-Doppler spread function of the CIR are approximately sparse, we propose two estimation…”
Získať plný text

An Adaptive MP Algorithm for Underwater Acoustic Channel Estimation Based on Compressed Sensing Autor Mu, Shaopeng, Gao, Wengen, Li, Yunfei, Jiang, Ling, Pan, Mengxing, Xu, Hanwen

“… To address this issue, this paper introduces a delay-Doppler spread function (DDSF) to account for the effect of ICI and proposes a new compressed sensing (CS…”
Získať plný text

Interpreting the Underwater Acoustic Channel Impulse Response and Doppler Spread Using Braid Representations Autor Kemerling, Madison, Sen Gupta, Ananya

“… Specifically, we explore four different variables: water depth, channel range, spreading factor, and number of multipath arrivals, while following the variations shown on delay-doppler spread function…”
Získať plný text

Estimation and Equalization of Rapidly Varying Sparse Acoustic Communication Channels Autor Weichang Li, Preisig, J.C.

“… To address both the rapid channel fluctuations and the channel sparse structure, the delay-Doppler-spread function representation of the channel is adopted…”
Získať plný text

Wavefront segmentation and classification for model-based underwater high-frequency tomography Autor Zamanizadeh, E., Gomes, J., Bioucas-Dias, J. M.

“…The problem of inferring side information regarding an underwater acoustic (UWA) channel from the environmental signature imprinted on waveforms by the…”
Získať plný text

Eigenfunctions of Underspread Linear Communication Systems Autor Barbarossa, Sergio, Tsitsvero, Mikhail

“…In this paper we show that the eigenfunctions can be found exactly for systems whose delay-Doppler spread function is concentrated along a straight line and they can be found in approximate sense…”
Získať plný text

In Situ Performance Prediction of a Coherent Acoustic Modem in a Reverberant Environment Autor van Walree, Paul A., Colin, Mathieu E. G. D.

“… Measured power-delay profiles and delay-Doppler spread functions are used to predict receiver output signal-to-noise ratio (SNR…”
Získať plný text

Doppler compensation in underwater channels using time-reversal arrays Autor Gomes, J., Barroso, V.

“… to differential Doppler. The proposed technique for Doppler compensation builds on the representation of time-varying pulse shapes using delay-Doppler spread functions. By inverting these functions in both delay and Doppler at each transducer, the mirror is able to project signals that converge on the source and are devoid of Doppler shifts when observed in its moving reference frame…”
Získať plný text