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Ping-pong beam training for reciprocal channels with delay spread
2015
2015 49th Asilomar Conference on Signals, Systems and Computers
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We consider FDD systems for which implicit feedback via channel reciprocity is not available. ...
The techniques exploit channel reciprocity and use relative calibration techniques only among the nodes in the transmit cluster to compensate for non-reciprocal transceiver effects. ...
WA2b-2 10:40 AM Ping-Pong Beam Training for Reciprocal Channels with Delay Spread Elisabeth De Carvalho, Jørgen Bach Andersen, Aalborg University, Denmark We present an iterative beam training procedure ...
doi:10.1109/acssc.2015.7421451
dblp:conf/acssc/CarvalhoA15
fatcat:mqokuvnh3zg45licnfbgxyvxfu
Millimeter Wave Beamforming for Wireless Backhaul and Access in Small Cell Networks
2013
IEEE Transactions on Communications
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2013 pre-print arXiv:1306.6659v1 fatcat:7gx773lyjfaaxlshmplkocnydi
The performance of the proposed alignment technique is analyzed and compared with other search and alignment methods. The results show significant performance improvement with reduced search time. ...
To overcome this, we propose an efficient beam alignment technique using adaptive subspace sampling and hierarchical beam codebooks. ...
& Ping−pong Search (Proposed Algorithm) Fig. 12. ...
doi:10.1109/tcomm.2013.090513.120848
fatcat:22b65zn4kngljdfywmdinxchha
Space-time processing for wireless communications
1997
IEEE Signal Processing Magazine
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Vanderveen for their contributions and for their useful comments on the manuscript. ...
We would also like to thank the anonymous reviewers for their suggestions, which greatly helped in improving the article. ...
In time-division duplexing (TDD) systems, the principle
(SU-SIMO) of reciprocity applies as long as the "ping-pong" time (the time separating a receive from a transmit frame in TDD systems) is very small ...
doi:10.1109/79.637317
fatcat:2j7lq24r3rghdiwsnn3wxwuivm
Noisy Beam Alignment Techniques for Reciprocal MIMO Channels
2017
IEEE Transactions on Signal Processing
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2016 pre-print arXiv:1609.03601v2 fatcat:iaovaabenfgrzjko74hhnrlgoiOther Versions
The focus of this work is on beam alignment for time-division duplexing (TDD) systems, for which we propose a number of novel algorithms. ...
the low-SNR regime (typical for mmWave systems) with minimal complexity/feedback overhead. ...
During slot 1 (ping), node 1 sends a training symbol to node 2 on the downlink channel H. During slot 2 (pong), node 2 sends a training symbol back to node 1 on the uplink channel H T . ...
doi:10.1109/tsp.2017.2715001
fatcat:z3homk3sm5bgnnrrldwqy2i67i
MIMO Wireless Linear Precoding
2007
IEEE Signal Processing Magazine
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He has won several awards for his research and engineering contributions, including the IEEE Signal Processing Society's Technical Achievement Award. ...
ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for closely reading the manuscript and providing detailed comments, which helped improve the quality of this paper. ...
In voice systems, this lag is the ping-pong period; in asynchronous data systems, the lag is the scheduling delay between the reception of the signal from a user and the next transmission to that user. ...
doi:10.1109/msp.2007.904811
fatcat:cz6ffonyi5cwtc6klu73dh7xei
A Comprehensive Survey on Mobility Management in 5G Heterogeneous Networks: Architectures, Challenges and Solutions
2020
IEEE Access
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Intense deployment of small cells, along with many advantages it provides, brings important mobility management problems such as frequent handover (HO), HO failure, HO delays, ping-pong HO and high energy ...
level mobility and beam management. ...
users and ping pong users. ...
doi:10.1109/access.2020.3030762
fatcat:72pl4aunwjbsrpojd62fox74na
Wireless Communication, Sensing, and REM: A Security Perspective
2021
IEEE Open Journal of the Communications Society
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Sections IV, V, and VI discuss the exploratory, manipulation, disruption attacks with solutions, respectively. ...
A case study to highlight the need for a secure REM in the context of V2X communication is described in Section VII. ...
In the former case, an approach similar to the hysteresis margin for alleviating ping-pong handovers in cellular networks [102] can be utilized to avoid unnecessary or redundant sensing updates. ...
doi:10.1109/ojcoms.2021.3054066
fatcat:klhorbflvvdrlkqyndctn3lwtq
On Securing Underwater Acoustic Networks: A Survey
2018
IEEE Communications Surveys and Tutorials
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The research of UWAN security is still in an early stage, and the paper discusses several important issues necessarily for further studies at the end. ...
Peculiar features of UWANs such as very constrained resources pose big challenges in defending UWANs against security threats, and many research results are published to address these issues along with ...
DS-CDMA is vulnerable to attacks because it is possible for attackers to identify blindly the spreading code used by the legitimate user when neither channel state information (CSI) nor training sequence ...
doi:10.1109/comst.2018.2864127
fatcat:7b5wufjqmvcnje7pcmxrdf6ehi
Implementation of Fog computing for reliable E-health applications
2015
2015 49th Asilomar Conference on Signals, Systems and Computers
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In this paper we compare one-stage and two-stage radio access protocol options tailored for sporadic transmissions of small data packets in uplink with respect to throughput and delay requirements. ...
Specifically, we introduce a concept for sparse joint activity, channel and data detection in the context of the Coded ALOHA (FDMA) protocol. ...
WA2b-2 10:40 AM Ping-Pong Beam Training for Reciprocal Channels with Delay Spread Elisabeth De Carvalho, Jørgen Bach Andersen, Aalborg University, Denmark We present an iterative beam training procedure ...
doi:10.1109/acssc.2015.7421170
dblp:conf/acssc/CraciunescuMMKP15
fatcat:qm6mki5z6bcvrfimkmqjyrxaxm
Neurophysiological and Computational Principles of Cortical Rhythms in Cognition
2010
Physiological Reviews
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B: a model chattering neuron endowed with a ping-pong interplay between two electrotonic compartments. [A from Gray and McCormick (373); B from Wang (1028).] ...
In either case, the "ping-pong" iterative interplay between spikes and afterdepolarization underlies a burst of spikes, which is terminated by the activation of a K ϩ current. ...
doi:10.1152/physrev.00035.2008
pmid:20664082
pmcid:PMC2923921
fatcat:m5xm2wpx2ne7rhc5iwjg45muca
Interferometric Synthetic Aperture Radar Geodesy
[chapter]
2007
Treatise on Geophysics
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9; x 0 ; R 0 ð Þ ¼ e -j4R0= sinc ÁR r 9 -R 0 ð Þ Â sinc ÁX x9 -x 0 ð Þ
Pixel dimensions A b e jφ b A b e jφ b ∑A εi e jφ εi e -j(4π/λ)rεi A b e jφ b e -j(4π/λ)r 1 A b e jφ b e -j(4π/λ)r 2 'Ping-pong ...
For a collection of scatterers over the beam pointed with a particular squint, all scatterers experience the same Doppler frequency spread, so the spectra would be as shown, controlled in extent and magnitude ...
For our purposes, we let with the understanding that the 'carrier' has been removed. ...
doi:10.1016/b978-044452748-6.00059-6
fatcat:agzc6grlszffja2ztnytjb5tde
RSFQ TECHNOLOGY: CIRCUITS AND SYSTEMS
2001
International Journal of High Speed Electronics and Systems
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A necessary key to translating these advantages to the systemlevel involves understanding the I/O, synchronization, and packaging issues associated with a cryogenic technology. ...
Rapid Single-Flux-Quantum (RSFQ) logic is a superconductor IC technology that, with only a modest number of researchers worldwide, has produced some of the world's highest performance digital and mixed-signal ...
Acknowledgements Special thanks to all who contributed data, text, figures, and/or assisted with proofreading, including: John ...
doi:10.1142/s0129156401000861
fatcat:awsevonrufgdzmmcmhf5lra5we
RSFQ TECHNOLOGY: CIRCUITS AND SYSTEMS
[chapter]
2001
Selected Topics in Electronics and Systems
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A necessary key to translating these advantages to the systemlevel involves understanding the I/O, synchronization, and packaging issues associated with a cryogenic technology. ...
Rapid Single-Flux-Quantum (RSFQ) logic is a superconductor IC technology that, with only a modest number of researchers worldwide, has produced some of the world's highest performance digital and mixed-signal ...
Acknowledgements Special thanks to all who contributed data, text, figures, and/or assisted with proofreading, including: John ...
doi:10.1142/9789812810014_0010
fatcat:hryou65xmra4tnl5thdwwj7nrm
Acoustofluidics: Theory and simulation of streaming and radiation forces at ultrasound resonances in microfluidic devices
2009
Journal of the Acoustical Society of America
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In the split-beam system, each position of these fishes in three-dimensional space was estimated from delays of echoes and differences of delays between receive channels. ...
"Ping-pong" alternating sampling may be used to acquire samples from both channels concurrently, possibly to assess timeof-arrival differences between the two hydrophones. ...
The bubble densities were observed to have power-law forms with varying parameters with the strongest, for early ages, having an exponent of Ϫ3.6 and a void fraction of 4ϫ10 Ϫ7 , and with both diminishing ...
doi:10.1121/1.4783855
fatcat:cyftnzsenzempdbtk4dd2hzw5u
Ocean, platform, and signal processing effects on synthetic aperture sonar performance
1991
Journal of the Acoustical Society of America
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Large synthetic apertures give rise to relatively narrow synthesized beams, which in turn allow very high resolution focused images to be formed from radar or sonar data. ...
The target in the synthetic aperture sonar case could be the ocean bottom, and the objective could be, for example, ocean-bottom mapping or searching for a sunken vessel. ...
I also thank the Charles Stark Draper Laboratory for sponsoring the work. ...
doi:10.1121/1.400746
fatcat:6357pltnarepbobpsu4b3ter6a
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