[PDF] Top 20 Underwater communications using virtual time reversal in a variable geometry channel
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Underwater communications using virtual time reversal in a variable geometry channel
... experiments using Time-Reversal Mir- ror(TRM) techniques have shown that the underwater a- coustic channel presents a longer stability than it was previ- ously ...to underwater ... See full document
6
Combined adaptive time reversal and DFE technique for time-varying underwater communications
... combined geometry-adapted passive Time Reversal (pTR) and Decision Feedback Equalizer (DFE) technique for time-variant underwater ...rate communications between a moving source ... See full document
8
Joint passive time reversal and multichannel equalization for underwater communications
... joint time reversal using estimated probes and the simplified MC algorithms of Section III, as well as the DDPPC approach of [7] with impulse response snapshots taken every 10 symbol ...improvement ... See full document
6
Passive time reversal probe-signal capture optimization for underwater communications
... Passive Time Reversal (pTR) is an emerging technique for underwater communications where a channel probe is sent ahead of the data ...The channel probe must be captured in ... See full document
6
Experimental assessment of time-reversed OFDM underwater communications
... demonstrated in underwater channels at rates of 10 − 30 ...modulation in radio communications due to its spectral flexibility and the simplicity of FFT-based ...of underwater OFDM are ... See full document
6
Time reversal and spatial diversity: issues in a time varying geometry test
... Abstract. Underwater acoustic communications in waveguides is known to be prone to severe multipath, which strongly limits practical transmission rates with actual channel equalization tech- ... See full document
8
Underwater acoustic communication using a time-reversal mirror approach
... concentrated in both time and space at a autonomous underwater vehicle (AUV) location if the basic multipath-distorted constellation pulse shapes are available at the mirror ...[3],[4]. In the ... See full document
6
Superimposed training low probability of detection underwater communications
... stability in this time-varying channel, dealing with both variable noise levels, multipath, and ...problem, in particular with low SNR ...steady in the water, both soft and hard ... See full document
7
Multi-node processing for asymmetrical communications in underwater acoustic networks
... by using the reciprocity property of the underwater acoustic channel in a method called Time Reversal (TR) [1], [2] that was shown to efficiently focalize a received signal, ... See full document
7
Probe timing optimization for time-reversal underwater communications
... passive Time Reversal (a-pTR) [2], [3] appeared as a viable alternative for simple and robust underwater coherent communications ...Active Time Reversal (aTR) takes advantage of ... See full document
8
Underwater communications for moving source using geometry-adapted time reversal and DFE UAN10 data
... passive Time Reversal (pTR) and Decision Feedback Equalizer (DFE) for underwater communications between a moving source and a fixed receiver array (implying a range change) ...the ... See full document
7
Adaptive spatial combining for passive time-reversed communications
... Passive time reversal has aroused considerable interest in underwater communications as a computationally inexpensive means of mitigating the intersymbol interference introduced by the ... See full document
16
Virtual time - reversal in underwater communications. Results on the INTIFANTE'00 Sea trial
... focus in two aspects: one, is to offer a common theoretical view for TRM and MFP as signal estimation techniques and second, it shows with experimental data that under realistic moving -AUV to VLA communication ... See full document
7
Environmental model-based time-reversal underwater communications
... Preview In order to contextualize the main issues in equalization of doubly spread channels, this chapter presents an overview of underwater acoustic communications using wireless sys- ... See full document
183
Underwater Acoustic simulations with a time variable acoustic propagation model
... movement. In the FSpTR scheme a frequency shift is applied to the IRs estimate in order to compensate for environmental changes, resulting in an adaptive ...understood using (5), where it can ... See full document
7
Comment on Time-reversal symmetry-breaking superconductivity
... that using the orthogonality rela- tion ~3! on the continuum, Musaelian et ...s1id. In agreement with the present comment and in contradiction with the investigation by Ghosh 1–3 they ~a! confirmed ... See full document
2
J. Microw. Optoelectron. Electromagn. Appl. vol.16 número2
... The equivalent circuit for the proposed structure of the crossed dipole is based on the inductive reactance of width w, a capacitive susceptance derived from the spacing p w and other susceptance derived from the ... See full document
14
Doppler Domain Decomposition of the Underwater Acoustic Channel Response
... Abstract—Most underwater applications are very sensitive to environmental perturbations like source/receiver motion and surface ...variations. In real conditions, the transmitted signal reaches the receiver ... See full document
7
J. Microw. Optoelectron. Electromagn. Appl. vol.16 número3
... utilizing virtual extrapolated array is a promising solution because it is suitable for an array with limited aperture and meets the requirement of miniaturizing the imaging system ...the virtual antennas ... See full document
9
OFDM demodulation in underwater time-reversed shortned channels
... Passive Time Reversal In [3], [9] one FFT demodulator is associated with each of the receiver sensors, and given the observations and channel estimates for a given subcarrier the corresponding ... See full document
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