Results 41 to 50 of about 34,935 (182)
Geometry-Based Stochastic Modeling and Estimation of Vehicle to Vehicle Channels [PDF]
, 2014 In this paper, a geometry-based stochastic channel model (GSCM) for vehicle-to-vehicle (V2V) wireless communica- tion is developed. The channel model reveals that the channel representation in delay-Doppler domain can be divided into four regions.
Beygi, Sajjad +2 more
core +1 more source
Delay-Doppler Multiplexing with Global Filtering
2025 IEEE Wireless Communications and Networking Conference (WCNC)This paper proposes a novel modulation technique called globally filtered orthogonal time frequency space (GF-OTFS) which integrates single-carrier frequency division multiple access (SC-FDMA)-based delay-Doppler representation with universal filtered multi-carrier (UFMC) modulation.
Jialiang Zhu +2 more
openaire +3 more sources
Journal of Communications Software and SystemsOrthogonal time frequency space (OTFS) modulation is a breakthrough waveform that significantly outperforms conventional modulation schemes in high-mobility scenarios. Unlike traditional approaches that operate in the time-frequency domain, OTFS exploits
Sundaresan Sabapathy +2 more
doaj +1 more source
Estimation of Overspread Underwater Acoustic Channel Based on Low-Rank Matrix Recovery
Sensors, 2019 In this paper, the estimation of overspread, i.e., doubly spread underwater acoustic (UWA) 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 ...
Jie Li +4 more
doaj +1 more source
Low-Complexity Iterative Detection for Orthogonal Time Frequency Space Modulation
, 2017 We elaborate on the recently proposed orthogonal time frequency space (OTFS) modulation technique, which provides significant advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels.
Hong, Yi +4 more
core +1 more source
Joint Transmit and Receive Filter Optimization for Sub-Nyquist Delay-Doppler Estimation
, 2018 In this article, a framework is presented for the joint optimization of the analog transmit and receive filter with respect to a parameter estimation problem. At the receiver, conventional signal processing systems restrict the two-sided bandwidth of the
Lenz, Andreas +2 more
core +1 more source
Sensitivity to Soil Moisture and Observation Geometry of Spaceborne GNSS-R Delay-Doppler Maps [PDF]
, 2019 © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new ...
Camps Carmona, Adriano José +5 more
core +1 more source
Efficiently Estimating a Sparse Delay-Doppler Channel
CoRR, 2020 Multiple wireless sensing tasks, e.g., radar detection for driver safety, involve estimating the "channel" or relationship between signal transmitted and received. In this work, we focus on a certain channel model known as the delay-doppler channel. This model begins to be useful in the high frequency carrier setting, which is increasingly common with ...
openaire +2 more sources
Aluminium Feeds for Reflector for NadirSAR [PDF]
, 2018 With the long term aim of developing a NadirSAR quadrotor UAV system specialized for monitoring broad acre grain fields, a large aperture load bearing antenna to use as the main structural element was sort.
Gray, Derek, Le Kernec, Julien
core +1 more source
Mars mapping with delay‐Doppler radar [PDF]
Journal of Geophysical Research: Planets, 1999 Mars radar imaging results from Arecibo 12.6‐cm observations are presented. The images were derived from delay‐Doppler mapping using a coded‐long‐pulse technique to mitigate the effects of echo overspreading. Images of the depolarized echo are used to identify regions of high decimeter‐scale roughness. Some of the strongest echo features are located on
Harmon, J. K. +4 more
openaire +1 more source