Search Results - 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 by 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…”
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Estimation of Rapidly Time-Varying Sparse Channels by 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…”
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Estimation of Overspread Underwater Acoustic Channel Based on Low-Rank Matrix Recovery by 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…”
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Identification and matching of sparse Delay-Doppler Spread Functions from high-frequency communications signals by 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…”
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Tracking channel variations in a time-varying doubly-spread underwater acoustic channel by 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…”
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On Sparse Bayesian Spreading Function Estimation Based Iterative Detection in Multiple-Input Multiple-Output Underwater Acoustic Communications by 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…”
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Probing the Time-Evolution of the Sub-THz Radio Channel at 160 GHz for Communication and Sensing by Keusgen, Wilhelm, Eichler, Taro

“… Further statistical parameters like path loss, delay spread, Doppler spread, and the Ricean K-factor are derived from the system functions…”
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Interpreting the Underwater Acoustic Channel Impulse Response and Doppler Spread Using Braid Representations by 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…”
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A geometric mixed norm approach to shallow water acoustic channel estimation and tracking by Sen Gupta, Ananya, Preisig, James

“… complex function based on the L2 estimation error. Our mixed norm formulation is mathematically equivalent to conventional L2 constrained L1 minimization…”
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Fast estimation of sparse doubly spread acoustic channels by Zeng, Wen-Jun, Xu, Wen

“…) that can handle complex-valued data for estimating the delay-Doppler spread function of a time-varying channel…”
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An Adaptive MP Algorithm for Underwater Acoustic Channel Estimation Based on Compressed Sensing by 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…”
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In Situ Performance Prediction of a Coherent Acoustic Modem in a Reverberant Environment by 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…”
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Sparse Underwater Acoustic Channel Parameter Estimation Using a Wideband Receiver Array by 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…”
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A Discrete-Time Channel Simulator Driven by Measured Scattering Functions by van Walree, P., Jenserud, T., Smedsrud, M.

“…In-situ measurements of the scattering function are used to drive a channel simulator developed in the context of underwater acoustic telemetry…”
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Adaptive robust Max-SLNR precoder for MU-MIMO-OFDM systems with imperfect CSI by Shu, Feng, Tong, Juanjuan, You, Xiaohu, Gu, Chen, Wu, Jiajun

“… In this paper, the coefficient of CSI error needed to adapt to fading channels is modeled as a function of Doppler spread, CSI delay, and signal-to-noise ratio（SNR…”
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Joint Estimation of Carrier Frequency Offset and Channel Impulse Response for Linear Periodic Channels by 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…”
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Estimation and Equalization of Rapidly Varying Sparse Acoustic Communication Channels by 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…”
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A model-based estimator-correlator (EC) structure by Ricker, D.W., Cutezo, A.J.

“… (or exponentially distributed) signals embedded in similarly distributed interference and is applicable to the detection of delay Doppler spread sonar echoes…”
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Wavefront segmentation and classification for model-based underwater high-frequency tomography by 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…”
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Eigenfunctions of Underspread Linear Communication Systems by 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…”
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