Relevant bibliographies by topics / Spatial channel

Academic literature on the topic 'Spatial channel'

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Published: 4 June 2021
Last updated: 28 January 2023

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Journal articles on the topic "Spatial channel"

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Jinno, Masahiko. "Spatial Channel Cross-Connect Architectures for Spatial Channel Networks." IEEE Journal of Selected Topics in Quantum Electronics 26, no. 4 (July 2020): 1–16. http://dx.doi.org/10.1109/jstqe.2020.2975660.

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Iqbal, Zahid, Fei Ji, and Yun Liu. "Virtual Spatial Channel Number and Index Modulation." Wireless Communications and Mobile Computing 2021 (September 11, 2021): 1–10. http://dx.doi.org/10.1155/2021/2982226.

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This paper proposes a novel precoding-aided and efficient data transmission scheme called virtual spatial channel number and index modulation (VS-CNIM), which conveys extra data by changing both the number and index of active virtual parallel channels of multiple-input multiple-output (MIMO) channels, obtained through the singular value decomposition (SVD) in each time slot. Unlike the conventional virtual spatial modulation (VSM), where extra data bits are transmitted only using index of active virtual parallel channels, the VS-CNIM scheme, depending on incoming information bits, transmits extra bits utilizing both the number and indices of active parallel channels along the bits carried by M -ary constellation symbols. Therefore, VS-CNIM provides significantly superior spectral efficiency (SE) compared to VSM. Considering the influence of imperfect channel estimation, a closed-form upper bound is derived on average bit error probability (ABEP). The asymptotic performance is also analyzed, which gives the coding gain and diversity order and describes error floor under the consideration of perfect and imperfect channel estimation, respectively. Monte Carlo simulations exhibit that the VS-CNIM scheme achieves considerably better error performance and high SE than precoding-aided SM (PSM) and VSM schemes.
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DENNIS, S. C. R., W. H. H. BANKS, P. G. DRAZIN, and M. B. ZATURSKA. "Flow along a diverging channel." Journal of Fluid Mechanics 336 (April 10, 1997): 183–202. http://dx.doi.org/10.1017/s0022112096004648.

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This paper treats the two-dimensional steady flow of a viscous incompressible fluid driven through a channel bounded by two walls which are the radii of a sector and two arcs (the ‘inlet’ and ‘outlet’), with the same centre as the sector, at which inflow and outflow conditions are imposed. The computed flows are related to both a laboratory experiment and recent calculations of the linearized ‘spatial’ modes of Jeffery–Hamel flows. The computations, at a few values of the angle between the walls of the sector and several values of the Reynolds number, show how the first bifurcation of the flow in a channel is related to spatial instability. They also show how the end effects due to conditions at the inlet and outlet of the channel are related to the spatial modes: in particular, Saint-Venant's principle breaks down when the flow is spatially unstable, there being a temporally stable steady flow for which small changes at the inlet or outlet create substantial effects all along the channel. The choice of a sector as the shape of the channel is to permit the exploitation of knowledge of the spatial modes of Jeffery–Hamel flows, although we regard the sector as an example of channels with walls of moderate curvature.
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Cogalan, T., H. Haas, and E. Panayirci. "Optical spatial modulation design." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (March 2, 2020): 20190195. http://dx.doi.org/10.1098/rsta.2019.0195.

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Visible light communication (VLC) systems are inherently signal-to-noise ratio (SNR) limited due to link budget constraints. One favourable method to overcome this limitation is to focus on the pre-log factors of the channel capacity. Multiple-input multiple-output (MIMO) techniques are therefore a promising avenue of research. However, inter-channel interference in MIMO limits the achievable capacity. Spatial modulation (SM) avoids this limitation. Furthermore, the performance of MIMO systems in VLC is limited by the similarities among spatial channels. This limitation becomes particularly severe in intensity modulation/direct detection (IM/DD) systems because of the lack of phase information. The motivation of this paper is to propose a system that results in a multi-channel transmission system that enables reliable multi-user optical MIMO SM transmission without the need for a precoder, power allocation algorithm or additional optics at the receiver. A general bit error performance model for the SM system is developed for an arbitrary number of light-emitting diodes (LEDs) in conjunction with pulse amplitude modulation. Based on this model, an LED array structure is designed to result in spatially separated multiple channels by manipulating the transmitter geometry. This article is part of the theme issue ‘Optical wireless communication’.
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Saleem, Ayesha Bint, Syed Ali Hassan, and Haejoon Jung. "Channel Estimation for Spatial Modulation Schemes in Spatially Correlated Time Varying Channels." IEEE Transactions on Vehicular Technology 70, no. 5 (May 2021): 5143–48. http://dx.doi.org/10.1109/tvt.2021.3075734.

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Abouda, A. A., and N. G. Tarhuni. "MIMO Channel Gain Mechanisms Relative to SISO Channel." Journal of Engineering Research [TJER] 7, no. 2 (December 1, 2010): 40. http://dx.doi.org/10.24200/tjer.vol7iss2pp40-47.

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In contrast to the rest of wireless communication technologies, multiple-input multiple-output (MIMO) technology enjoys different gain mechanisms that make it very attractive for reliable high data rate wireless communications. This paper presents a study on these gain mechanisms with particular emphasis on the case of high average received signal to noise ratio (SNR) where the MIMO system deployment is most promising. We write the MIMO channel capacity in terms of gains relative to a single- input single-output (SISO) wireless channel. Doing so, spatial multiplexing gain and power gain of MIMO wireless channels become more insightful. Based on this analysis a switching scheme between spatial multiplexing and transmit diversity is proposed. We support our discussion with numerical results which show that under a high data rate spatial multiplexing scheme the contribution of each gain mechanism to the total channel capacity depends on the channel Ricean factor, the average received SNR, and the MIMO system size. The proposed switching scheme gives about 2 dB gain in bit error rate performance relative to the spatial multiplexing mode.
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Davis, Mark Franklin. "Audio channel spatial translation." Journal of the Acoustical Society of America 128, no. 1 (2010): 509. http://dx.doi.org/10.1121/1.3472297.

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Fan, Wei, Pekka Kyösti, Jesper Ø. Nielsen, Lassi Hentilä, and Gert F. Pedersen. "Emulating Realistic Bidirectional Spatial Channels for MIMO OTA Testing." International Journal of Antennas and Propagation 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/289843.

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This paper discusses over the air (OTA) testing for multiple input multiple output (MIMO) capable terminals with emphasis on modeling bidirectional spatial channel models in multiprobe anechoic chamber (MPAC) setups. In the literature, work on this topic has been mainly focused on how to emulate downlink channel models, whereas uplink channel is often modeled as free space line-of-sight channel without fading. Modeling realistic bidirectional (i.e., both uplink and downlink) propagation environments is essential to evaluate any bidirectional communication systems. There have been works stressing the importance of emulating full bidirectional channel and proposing possible directions to implement uplink channels in the literature. Nevertheless, there is no currently published work reporting an experimental validation of such concepts. In this paper, a general framework to emulate bidirectional channels for time division duplexing (TDD) and frequency division duplexing (FDD) communication systems is proposed. The proposed technique works for MPAC setups with arbitrary uplink and downlink probe configurations, that is, possibly different probe configurations (e.g., number of probes or their configurations) in the uplink and downlink. The simulation results are further supported by measurements in a practical MPAC setup. The proposed algorithm is shown to be a valid method to emulate bidirectional spatial channel models.
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Ndzi, David L., Nick Savage, and Boris Gremont. "Spatial and Temporal Variation of Wideband Indoor Channels." International Journal of Antennas and Propagation 2010 (2010): 1–11. http://dx.doi.org/10.1155/2010/735434.

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Extensive studies of the impact of temporal variations induced by people on the characteristics of indoor wideband channels are reported. Singular Value Decomposition Prony algorithm has been used to compute the impulse response from measured channel transfer functions. The high multipath resolution of the algorithm has allowed a detailed assessment of the shapes of individual multipath clusters and their variation in time and space in indoor channels. Large- and small-scale analyses show that there is a significant dependency of the channel response on room size. The presence of people in the channel has been found to induce both signal enhancements and fading with short-term dynamic variations of up to 30 dB, depending on the number of people and their positions within the room. A joint amplitude and time of arrival model has been used to successfully model measured impulse response clusters.
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Jain, Faquir, Bander Saman, Raja Hari Gudlavalleti, John Chandy, and Evan Heller. "Multi-State 2-Bit CMOS Logic Using n- and p- Quantum Well Channel Spatial Wavefunction Switched (SWS) FETs." International Journal of High Speed Electronics and Systems 27, no. 03n04 (September 2018): 1840020. http://dx.doi.org/10.1142/s0129156418400207.

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Unlike conventional FETs, spatial wavefunction switched (SWS)-FETs are comprised of two or more vertically stacked coupled quantum well or quantum dot channels, and the spatial location of carriers within these channels is used to encode the logic states (00), (01), (10) and (11). The aim of this paper is to present 4-states/2-bit output-input transfer characteristics using two Si/SiGe quantum well channels configured as CMOS using n- and p-channel spatial wavefunction switched field-effect transistors (SWS-FETs). Quantum simulations show switching of wavefunctions as the gate voltage is increased from lower Si quantum well to the upper well in n-channel and from upper SiGe quantum well to lower well in the p-channel. The inverter transfer characteristic and current switching are obtained by integrating BSIM (Berkeley Short-channel IGFET Model) and the Analog Behavioral Model (ABM). The simulation shows current flow only during switching.
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Dissertations / Theses on the topic "Spatial channel"

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Lee, Hong Seng. "Spatial channel model /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426081.

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Sasiakos, Christos. "A 3D spatial channel model for cellular radio." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA384906.

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Kilfoyle, Daniel B. (Daniel Brian). "Spatial modulation in the underwater acoustic communication channel." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/29046.

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Thesis (Ph. D.)--Joint Program in Oceanography and Oceanographic Engineering (Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and the Woods Hole Oceanographic Institution), 2000.
Vita.
Includes bibliographical references (leaves 180-181).
A modulation technique for increasing the reliable data rate achievable by an underwater acoustic communication system is presented and demonstrated. The technique, termed spatial modulation, seeks to control the spatial distribution of signal energy such that multiple parallel communication channels are supported by the single, physical ocean channel. Results from several experiments successfully demonstrate higher obtainable data rates and power throughput. Given a signal energy constraint, a communication architecture with access to parallel channels will have increased capacity and reliability as compared to one with access to a single channel. Assuming the use of multiple element spatial arrays at both the transmitter and receiver, an analytic framework is developed that allows a multiple input, multiple output physical channel to be transformed into a set of virtual parallel channels. The continuous time, vector singular value decomposition is the primary vehicle for this transformation. Given knowledge of the channel impulse responses and assuming additive, white Gaussian noise as the only interference, the advantages of using spatial modulation over a deterministic channel may be exactly computed. Improving performance over an ensemble of channels using spatial modulation is approached by defining and then optimizing various average performance metrics including average signal to noise ratio, average signal to noise plus interference ratio, and minimum square error. Several field experiments were conducted. Detailed channel impulse response measurements were made enabling application of the decomposition methodology. The number, strength, and stability of the available parallel channels were analyzed. The parallel channels were readily interpreted in terms of the underlying sound propagation field. Acoustic communication tests were conducted comparing conventional coherent modulation to spatial modulation. In one case, a reliable data rate of 24000 bits per second with a 4 kHz bandwidth signal was achieved with spatial modulation when conventional signaling could not achieve that rate. In another test, the benefits of spatial modulation for a horizontally distributed communication system, such as an underwater network with autonomous underwater vehicles, were validated.
by Daniel Brian Kilfoyle.
Ph.D.
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Downs, Peter William. "Spatial variations in river channel adjustments : implications for channel management in south-east England." Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315506.

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Williams, Ian E. "Channel Equalization and Spatial Diversity for Aeronautical Telemetry Applications." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605946.

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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California
This work explores aeronautical telemetry communication performance with the SOQPSK- TG ARTM waveforms when frequency-selective multipath corrupts received information symbols. A multi-antenna equalization scheme is presented where each antenna's unique multipath channel is equalized using a pilot-aided optimal linear minimum mean-square error filter. Following independent channel equalization, a maximal ratio combining technique is used to generate a single receiver output for detection. This multi-antenna equalization process is shown to improve detection performance over maximal ratio combining alone.
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Stuart, Kenneth. "Wideband channel sounder development and investigation of spatial and temporal variations in wireless communication channels." Thesis, University of Portsmouth, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.478920.

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Fu, Yu. "Performance investigation of spatial modulation systems under realistic channel models." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/3032.

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In order to fulfil the explosive demand for convenient wireless data access, novel wireless technologies such as the multiple-input-multiple-output (MIMO) have widely been used to improve the link reliability and capacity of wireless communication systems. In recent years, a new MIMO technology named the spatial modulation (SM) has attracted signi cant research interest due to its reported enhancement on the system performance with the reasonable system complexity. Before a new technology comes into real use, it is necessary to comprehensively evaluate its performance under different scenarios. In this thesis, we investigate the performance of SM systems under some important realistic scenarios for future wireless communications, such as the vehicle-to-vehicle (V2V), the high-speed train (HST), and the massive MIMO scenarios. Firstly, the bit error rate (BER) performance of SM systems under a novel threedimensional (3D) geometry based stochastic model (GBSM) for V2V MIMO channels is investigated by both theoretical analysis and system simulations. The impacts of vehicle tra c density (VTD), Doppler effect, and 3D feature on the BER performance of SM systems are thoroughly studied. In addition, other MIMO technologies, such as the vertical Bell Labs layered space-time (V-BLAST), the Alamouti scheme are compared with SM under different simulation settings. Secondly, the BER performance of SM systems is studied under a non-stationary wideband HST GBSM considering the non-ideal channel estimation case. The timevarying behaviour of the channel and its impact on the performance of SM systems are comprehensively investigated. The accurate theoretical BER expression of SM systems under a non-stationary wideband HST channels with non-ideal channel estimation is derived. A novel statistic property named stationary interval in terms of the space-time correlation function (STCF) is introduced in order to clearly explain all theoretical and simulation results. Thirdly, the performance of SM systems is evaluated under a Kroneck-based massive MIMO channel model. As a massive MIMO system employs large numbers of antennas, antenna elements are distributed over a wide range. Thus, different antenna elements may observe different sets of clusters. How this phenomenon affects the performance of SM systems is investigated by considering a survival probability of clusters, which abstracts the birth-death process of each cluster in the channel model. Moreover, the performance of SM systems is also compared with that of other MIMO technologies under the massive MIMO channel model. In summary, all research works in this thesis have considered realistic MIMO channel models, which are meaningful for the test, performance evaluation, and implementation of SM technology for future advanced wireless communications systems.
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Yang, Yanling. "MIMO Channel Spatial Covariance Estimation: Analysis Using a Closed-Form Model." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2488.

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Multiple-input Multiple-output (MIMO) wireless communication systems allow increased spectral efficiency and therefore promise significant improvement in performance. However, because of the rapid variation in channel state information (CSI) in networks with mobile nodes or scatterers, it is difficult both to maintain high communication performance and to create channel models that effectively represent the time-varying behavior of the channels. The spatial covariance of the MIMO channel describes the average power gain on each transmit-receive antenna pair as well as the correlation between the complex link gains and thus provides critical information for understanding the performance of the system and for creating models to accurately describe the interaction of the electromagnetic fields with the antennas. Furthermore, in many cases the MIMO signaling scheme uses knowledge of this spatial covariance. This thesis proposes a closed-form analytical model that allows estimation of the full MIMO channel covariance based on knowledge of the power angular spectrum (PAS) of the channel and the antenna radiation patterns. Comparison of covariance matrices computed using this model with those estimated from observed channel samples reveals the appropriate window over which the covariance should be estimated for non-WSS time-varying channels. Two approaches are developed to compare the covariance matrices in order to determine the appropriate window, both based on a metric, correlation matrix distance (CMD). Simulations based on both a two-ring propagation model and raytracing data in a three dimensional urban environment are included. The results reveal that with the optimal window size, the CMD of the estimated covariance is close to that of the analytical covariance. An average window size normalized by the scatterer circle radius is determined for practical estimation of covariance based on knowledge of the average distance to the scatterers. The impact of the number of scatterers on the optimal window size is analyzed as well. The results based on ray-tracing data show that the CMD of the estimated covariance using a 16 – 17λ window match the CMD of the analytical covariance.
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Iannucci, Peter Anthony. "Wireless communication and localization systems under spatial and temporal channel variations." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121651.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 209-218).
Wireless signals inevitably vary in time and space. The three chapters of this dissertation revolve around the exploitation of signal variations. This line of work has yielded new link-layer protocols for rateless codes on half-duplex additive white Gaussian noise channels; a new abstraction for short-range mobile-to-mobile and mobile-to-infrastructure "room-area" networks that adhere to the spatial boundaries of human conversation; a reduced-complexity tone reservation algorithm for optimizing signals to avoid amplifier non-linearities; and new tools for the study of physical-layer privacy and anonymity in wireless systems.
by Peter Anthony Iannucci.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Wagenbrenner, Joseph William. "Post-fire stream channel processes| Changes in runoff rates, sediment delivery across spatial scales, and mitigation effectiveness." Thesis, Washington State University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3598132.

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Wildfires dramatically affect hydrologic processes including runoff and erosion, which in turn can impact society. Disturbance by fire creates ecosystem heterogeneity, prompting many species to adapt to fire cycles. Human impacts have altered fire frequency and affected natural systems to the point that additional landscape-scale disturbances may cause a disruption in ecosystem form and function. The altered ecosystems and increased development in forests may exacerbate post-fire impacts, affecting more of the population in fire-prone regions.

The following three studies will improve our understanding and management of post-fire impacts on stream channel processes. A catchment in eastern Arizona where runoff data were collected between 1962 and 1983 was subsequently burned by a wildfire in 2011. The direct comparison of pre and post-fire runoff showed that the fire made runoff more rapid, increased peak discharge rates, and compressed the time scale of storm hydrographs. These results can help improve post-fire runoff modeling and management efforts.

The second topic addressed the scaling of sediment delivery across hillslope and small catchment scales. Erosion data used in this study were from the Arizona site and five other sites across the western US. Results from five of the six sites showed that sediment delivery significantly decreased with increasing spatial extent, while the lack of trend at the sixth site illustrates the variability in erosion responses across ecosystems. The relationships developed in this study will help improve estimates of sediment delivery rates at the small-catchment scale using more easily acquired data from small plots.

The third study addressed whether straw bale check dams reduce post-fire sediment yields or affect ephemeral stream channel morphology. A series of laboratory flume experiments based on measured post-fire field conditions showed that check dams can store sediment from initial runoff events, but that a large number of check dams would be needed to reduce post-fire sediment yields. The stored sediment reduced the local channel gradient, but the check dams did not otherwise affect the channel morphology. These data and field observations were used to develop a check dam classification system that can be applied in ephemeral streams in burned or unburned areas.

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Books on the topic "Spatial channel"

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Kilfoyle, Daniel B. Spatial modulation in the underwater acoustic communication channel. Cambridge, Mass: Massachusetts Institute of Technology, 2000.

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Sasiakos, Christos. A 3D spatial channel model for cellular radio. Monterey, Calif: Naval Postgraduate School, 2000.

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Jacobson, Robert B. Riparian-vegetation controls on the spatial pattern of stream-channel instability, Little Piney Creek, Missouri. [Washington, D.C.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Chakravorty, Ujjayant. Basinwide water management: A spatial model. Milan: Fondazione Eni Enrico Mattei, 2000.

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Jake, Piper, ed. Spatial planning and climate change. Milton Park, Abingdon, Oxon: Routledge, 2011.

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Sureshan, Selvarajah. Estimation of changes in spatial interaction using incremental growth. Ottawa: National Library of Canada, 1994.

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Janis, Michael J. Multivariate spatial interpolation of monthly precipitation. Elmer, N.J: C.W. Thornthwaite Associates, Laboratory of Climatology, 1995.

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service), SpringerLink (Online, ed. Adaptation to Climate Change: A Spatial Challenge. Dordrecht: Springer Science+Business Media B.V., 2009.

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Miller, Richard F. Spatial and temporal changes of sage grouse habitat in the sagebrush biome. Corvallis, Or: Oregon State University, Agricultural Experiment Station, 2000.

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Simin, Davoudi, Crawford Jenny, and Mehmood Abid, eds. Planning for climate change: Strategies for mitigation and adaptation for spatial planners. London: Earthscan, 2009.

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Book chapters on the topic "Spatial channel"

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Xie, Bosun. "Two-channel stereophonic sound." In Spatial Sound, 71–123. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003081500-2.

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Bhowal, Anirban, and Rakhesh Singh Kshetrimayum. "Channel Model." In Advanced Spatial Modulation Systems, 25–42. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-9960-6_2.

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Malik, Wasim Q., Junsheng Liu, Ben Allen, and David J. Edwards. "Ultra-Wideband Spatial Channel Characteristics." In Ultra-Wideband, 361–83. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470056843.ch17.

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Lord, J. Dennis, and Jac L. Goldstucker. "Spatial Changes in British Retailing: A Channel Metamorphosis." In Proceedings of the 1988 Academy of Marketing Science (AMS) Annual Conference, 61–66. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17046-6_12.

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Yu, Francis T. S. "Optical Spatial Channel and Encoding Principles." In Entropy and Information Optics, 35–44. Second edition. | Boca Raton : Taylor & Francis, CRC Press,2017.: CRC Press, 2017. http://dx.doi.org/10.1201/b22443-3.

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Mandal, Bijoy Kumar, and Ankita Pramanik. "Channel Estimation in Massive MIMO with Spatial Channel Correlation Matrix." In Intelligent Computing Techniques for Smart Energy Systems, 377–85. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0214-9_42.

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Du, Jingwei, Lihua Zhou, Guowang Du, Lizhen Wang, and Yiting Jiang. "Heterogeneous Network Representation Learning Based on Adaptive Multi-channel Graph Convolution." In Spatial Data and Intelligence, 133–53. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-24521-3_10.

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Zhong, Yane, Fangjun Huang, and Dong Zhang. "New Channel Selection Criterion for Spatial Domain Steganography." In Digital Forensics and Watermaking, 1–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40099-5_1.

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Yingwei, Luo, Xiong Guomin, Wang Xiaolin, and Xu Zhuoqun. "Spatial Data Channel in a Mobile Navigation System." In Computational Science and Its Applications – ICCSA 2005, 822–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11424826_88.

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Thiergart, Oliver, and Emanuël Habets. "Multi-Channel Sound Acquisition Using a Multi-Wave Sound Field Model." In Parametric Time-Frequency Domain Spatial Audio, 161–99. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119252634.ch7.

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Conference papers on the topic "Spatial channel"

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Wu, Xiping, Marco Di Renzo, and Harald Haas. "Spatially-Averaging Channel Estimation for Spatial Modulation." In 2014 IEEE 80th Vehicular Technology Conference (VTC Fall). IEEE, 2014. http://dx.doi.org/10.1109/vtcfall.2014.6966183.

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Kiamilev, F. E., and R. G. Rozier. "Design of Optoelectronic-VLSI ICs for Optically-Accessed SRAMs." In Spatial Light Modulators. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/slmo.1997.sma.4.

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Free-space optical interconnection (FSOI) of integrated circuits, called smart pixels, show great potential for efficient implementation of high-performance parallel computing, switching and signal processing systems [1]. Several FSOI technologies are now under development and prototype FSOI systems have been demonstrated. However, there has been relatively little published work that describes integrated circuit design for large-scale smart pixel ICs with over 100,000 transistors and thousands of optical I/O channels operating at 100Mbps/channel or higher data rates. Such a detailed design study is the objective of this paper. We focus on a specific problem of designing a large-scale optically-accessed SRAM. The work described in this paper builds on our earlier effort that produced a two kilobit 21,000 transistor hybrid CMOS-SEED photonic page buffer IC [2]. The 64 optical I/O channels on this IC were optically tested at 50Mbps/channel optical data throughput; corresponding to an aggregate optical data I/O bandwidth of 3.2Gbps in a 1mm2 chip area.
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Ibrahim, M., W. Al-Aqqad, F. Romer, M. Kaske, S. Semper, R. S. Thoma, and G. Del Galdo. "Compressive spatial channel sounding." In 12th European Conference on Antennas and Propagation (EuCAP 2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.0472.

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Hirota, Yusuke, Hideaki Furukawa, Hiroaki Harai, and Naoya Wada. "A Fractionally Spatial Super-Channel Switching System Design with Spatial Channel Slicing." In GLOBECOM 2018 - 2018 IEEE Global Communications Conference. IEEE, 2018. http://dx.doi.org/10.1109/glocom.2018.8647603.

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Jia, Min, Xuemai Gu, Sebin Im, and Hyungjin Choi. "An efficient OFDM channel estimation method for satellite and intermediate module repeater channels in DMB system." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.775266.

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Pham, Viet-Ha, Jean-Yves Chouinard, Dominic Grenier, and Huu-Tue Huynh. "Spatial channel and system characterization." In 2008 International Conference on Advanced Technologies for Communications (ATC). IEEE, 2008. http://dx.doi.org/10.1109/atc.2008.4760526.

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Xiping Wu, Marco Di Renzo, and Harald Haas. "Channel estimation for spatial modulation." In 2013 IEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). IEEE, 2013. http://dx.doi.org/10.1109/pimrc.2013.6666151.

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Xu, Wenyuan, Timothy Wood, Wade Trappe, and Yanyong Zhang. "Channel surfing and spatial retreats." In the 2004 ACM workshop. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1023646.1023661.

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Wang, Yi, Zhenyu Shi, Lei Huang, Ziming Yu, and Chang Cao. "An Extension of Spatial Channel Model with Spatial Consistency." In 2016 IEEE 84th Vehicular Technology Conference (VTC-Fall). IEEE, 2016. http://dx.doi.org/10.1109/vtcfall.2016.7880902.

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Gao, Fei, Jinping Sun, Xia Bai, and Zhenming Yu. "A new GMTI detector based on spaceborne single channel SAR." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.774794.

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Reports on the topic "Spatial channel"

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Krishnan, Michael N. Exploiting Spatial Channel Occupancy Information in WLANs. Fort Belvoir, VA: Defense Technical Information Center, May 2014. http://dx.doi.org/10.21236/ada605338.

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Moskowitz, Ira S., Patricia A. Lafferty, and Farid Ahmed. On LSB Spatial Domain Steganography and Channel Capacity. Fort Belvoir, VA: Defense Technical Information Center, March 2008. http://dx.doi.org/10.21236/ada489843.

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Stevens, James A. Spatial Reuse through Dynamic Power and Routing Control in Common-Channel Random-Access Packet Radio Networks. Fort Belvoir, VA: Defense Technical Information Center, August 1988. http://dx.doi.org/10.21236/ada197898.

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Mayne, Casey, David May, and David Biedenharn. Empirical analysis of effects of dike systems on channel morphology and flowlines. Engineer Research and Development Center (U.S.), March 2021. http://dx.doi.org/10.21079/11681/39799.

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A phased study of the dike fields within the Vicksburg and Memphis Districts of the US Army Corps of Engineers was conducted to document the channel morphology trends since dike construction on the Lower Mississippi River (LMR). This included the development of the hydrographic survey database and methodology utilized to identify changes in channel geometry in response to dike construction. A subsequent report will provide further refinements to the approach and results of the comprehensive assessment. Recent Mississippi River Geomorphology and Potamology program efforts have employed the database developed by Mr. Steve Cobb to assess the geomorphic changes in 21 dike systems along the LMR. Previous studies using this database have indicated that the dike fields have not caused a loss of channel capacity. Furthermore, these efforts suggested that the trends in the dike fields are closely related to the long-term geomorphic trends along the LMR. Previous efforts using the Cobb database provided considerable insight into the dike effects on the LMR, but they were limited spatially and temporally. In this study, a database and protocols were developed to allow for a more robust assessment of dike field impacts and to extend the spatial and temporal extents of the analysis.
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Stewart, J., T. Baginski, A. Sicherman, G. Greene, and A. Smith. Spatial And Quantitative Approache to Incorporating Stakeholder Values into Total Maximum Daily Loads: Dominguez Channel Case Study Final Report. Office of Scientific and Technical Information (OSTI), February 2007. http://dx.doi.org/10.2172/900859.

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Eckert, Fabian, and Michael Peters. Spatial Structural Change. Cambridge, MA: National Bureau of Economic Research, September 2022. http://dx.doi.org/10.3386/w30489.

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Lauth, Timothy, David Biedenharn, Travis Dahl, Casey Mayne, Keaton Jones, Charles Little, Joseph Dunbar, Samantha Lucker, and Nalini Torres. Technical assessment of the Old, Mississippi, Atchafalaya, and Red (OMAR) Rivers : geomorphic assessment. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45143.

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This report documents the geomorphic assessment component of the Old River, Mississippi River, Atchafalaya River, and Red River System Technical Assessment. The overall objectives of the geomorphic assessment are to utilize all available data to document the historic trends in hydrology, sedimentation, and channel geometry for the rivers in the vicinity of the Old River Control Complex and to summarize the changes observed at locations where repetitive datasets exist and at key reaches that are determined during the study. The geomorphic assessment tasks include data compilation, geometric data analysis, gage and discharge analysis, dredge record analysis, sediment data analysis, development of an events timeline, and integration of results. Geomorphic reaches were developed, and the morphological trends during different time periods were identified. The geomorphic assessment highlighted the importance of considering spatial and temporal variability when assessing morphological trends.
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Kularatne, Dhanushka N., Subhrajit Bhattacharya, and M. Ani Hsieh. Computing Energy Optimal Paths in Time-Varying Flows. Drexel University, 2016. http://dx.doi.org/10.17918/d8b66v.

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Autonomous marine vehicles (AMVs) are typically deployed for long periods of time in the ocean to monitor different physical, chemical, and biological processes. Given their limited energy budgets, it makes sense to consider motion plans that leverage the dynamics of the surrounding flow field so as to minimize energy usage for these vehicles. In this paper, we present two graph search based methods to compute energy optimal paths for AMVs in two-dimensional (2-D) time-varying flows. The novelty of the proposed algorithms lies in a unique discrete graph representation of the 3-D configuration space spanned by the spatio-temporal coordinates. This enables a more efficient traversal through the search space, as opposed to a full search of the spatio-temporal configuration space. Furthermore, the proposed strategy results in solutions that are closer to the global optimal when compared to greedy searches through the spatial coordinates alone. We demonstrate the proposed algorithms by computing optimal energy paths around the Channel Islands in the Santa Barbara bay using time-varying flow field forecasts generated by the Regional Ocean Model System. We verify the accuracy of the computed paths by comparing them with paths computed via an optimal control formulation.
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Nelson, Alex, Stanford A. Gibson, and Alex Sanchez. Development of a two-dimensional HEC-RAS sediment model for the Chippewa River, Wisconsin, for software development and sediment trend analysis. U.S. Army Engineer Research and Development Center, June 2022. http://dx.doi.org/10.21079/11681/44561.

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This US Army Corps of Engineers (USACE) Regional Sediment Management technical note (RSM-TN) describes an RSM effort that converted a one-dimensional (1D) sediment transport model of the Chippewa River confluence with the Mississippi River into a two-dimensional (2D) model. This work leveraged recent sediment data collection and tested the new 2D sediment transport capabilities in the Hydrologic Engineering Center, River Analysis System (HEC-RAS) Version 6.0. In addition to the benefits of software testing, the resulting model developed through this effort can provide more accurate spatial and temporal information about sedimentation in the Mississippi River navigation channel and help inform future dredging strategies for the St. Paul District, USACE.
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Kurvinen, L., M. Sahla, E. Virtanen, M. Westerbom, and J. Ekebom. Effects of projected climate change induced changes in wind patterns on the spatial distribution of blue mussels. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/305878.

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