Academic literature on the topic 'Space Division Multiple Access (SDMA)'

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Journal articles on the topic "Space Division Multiple Access (SDMA)"

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Hujun Yin and Hui Liu. "Performance of space-division multiple-access (SDMA) with scheduling." IEEE Transactions on Wireless Communications 1, no. 4 (October 2002): 611–18. http://dx.doi.org/10.1109/twc.2002.804188.

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Maruta, Kazuki. "Frequency Domain Backoff for Continuous Beamforming Space Division Multiple Access on Massive MIMO Wireless Backhaul Systems." Journal of communications software and systems 16, no. 1 (March 15, 2020): 1–10. http://dx.doi.org/10.24138/jcomss.v16i1.920.

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This paper newly proposes a frequency domain backoff scheme dedicated to continuous beamforming space division multiple access (CB-SDMA) on massive antenna systems for wireless entrance (MAS-WE). The entrance base station (EBS) has individual base band signal processing units for respective relay stations (RSs) to be accommodated. EBS then continuously applies beamforming weight to transmission/reception signals. CB-SDMA yields virtual point-to-point backhaul link where radio resource control messages and complicated multiuser scheduling are not required. This simplified structure allows RSs to work in a distributed manner. However, one issue remains to be resolved; overloaded multiple access resulting in collision due to its random access nature. The frequency domain backoff mechanism is introduced instead of the time domain one. It can flexibly avoid co-channel interference caused by excessive spatial multiplexing. Computer simulation verifies its superiority in terms of system throughput and packet delay.
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Tsoulos, G., J. McGeehan, and M. Beach. "Space division multiple access (SDMA) field trials. Part 2: Calibration and linearity issues." IEE Proceedings - Radar, Sonar and Navigation 145, no. 1 (1998): 79. http://dx.doi.org/10.1049/ip-rsn:19981781.

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Tsoulos, G., J. McGeehan, and M. Beach. "Space division multiple access (SDMA) field trials. Part 1: Tracking and BER performance." IEE Proceedings - Radar, Sonar and Navigation 145, no. 1 (1998): 73. http://dx.doi.org/10.1049/ip-rsn:19981782.

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ALANSI, M., I. ELSHAFIEY, A. AL-SANIE, S. ALGHUWAINEM, and H. AL-SHARARI. "MC-OFDMA FOR MULTI-USER DETECTION SCHEMES IN POWERLINE COMMUNICATION." Journal of Circuits, Systems and Computers 22, no. 08 (September 2013): 1350063. http://dx.doi.org/10.1142/s0218126613500631.

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Support of multiple users in wideband powerline communication (PLC) is essential to enhance the dependence on such emerging systems. This paper presents novel adaptations of the space division multiple access (SDMA) techniques to PLC. Multicarrier data transmission and orthogonal frequency division multiple access (OFDMA) techniques are invoked to mitigate the technical challenges of PLC channel impairments and enhance the spectral efficiency. Performance is enhanced using orthogonal Walsh–Hadamard codes. Linear and nonlinear multi-user detection (MUD) schemes are investigated, including the optimal maximum likelihood (ML) methods and the near-optimal sphere detectors(SDs). Presented results indicate the potential of the proposed scheme to enhance wideband PLC systems.
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Li, Shuang Zhi, Zhe Zhang, Xiao Min Mu, and Jian Kang Zhang. "Joint Multiple-Access Channel Effective Order and CIR Estimation Algorithm for Multi-User OFDM/SDMA System." Applied Mechanics and Materials 548-549 (April 2014): 1227–30. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1227.

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In this paper, a novel joint estimation of channel effective order and channel impulse response (CIR) is presented for multiuser orthogonal frequency division multiplexing/space-division multiple-access (OFDM/SDMA) systems. By exploiting Akaike’s Information Criterion (AIC) as the fitness function to search the optimal order, the proposed scheme performs the channel effective order and CIR estimation in a parallel way based on differential evolution (DE) algorithm. Simulation results demonstrate that the proposed scheme is capable of attaining a better mean square error performance than the fixed channel order scheme, and improving the performance of time-domain maximum likelihood (ML) channel estimator.
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Ilcev, Stojce Dimov. "Analyses of Space Division Multiple Access (SDMA) Schemes for Global Mobile Satellite Communications (GMSC)." TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation 14, no. 4 (2020): 821–30. http://dx.doi.org/10.12716/1001.14.04.05.

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Tsoulos, G. V. "Experimental and theoretical capacity analysis of space-division multiple access (SDMA) with adaptive antennas." IEE Proceedings - Communications 146, no. 5 (1999): 307. http://dx.doi.org/10.1049/ip-com:19990623.

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Alansi, Mohammed, Ibrahim Elshafiey, Abdulhameed Al-Sanie, and Md Anowar Hossain. "Multi-User Detection for Radar and Communication Multifunction System." Journal of Circuits, Systems and Computers 24, no. 03 (February 10, 2015): 1550038. http://dx.doi.org/10.1142/s0218126615500383.

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A multifunctional system that performs synthetic aperture radar (SAR) and communication tasks is presented. The system depends on orthogonal frequency division multiplexing (OFDM) waveform shaping and multiple input multiple output (MIMO) configuration to achieve enhancement in the spectral efficiency of communication operation and provide interference rejection in SAR imaging. The SAR interval idle time is utilized to enhance the communication signal through diversity. Adaptive system features are introduced to achieve multi-user detection and improve the communication reliability, by means of space division multiple access (SDMA) and space–time block coding (STBC). Investigations of linear and nonlinear multi-user detection (MUD) techniques are provided. Moreover, a genetic algorithm-based system is developed to optimize the MUD problem and to provide near-optimal performance even for overloaded scenarios. A gain of more than 4 dB is achieved at bit error rate of 10-2.
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Uthansakul, Peerapong, and Marek E. Bialkowski. "An Adaptive Power and Bit Allocation Algorithm for MIMO OFDM/SDMA System Employing Zero-Forcing Multi-user Detection." African Journal of Information & Communication Technology 2, no. 2 (July 12, 2006): 63. http://dx.doi.org/10.5130/ajict.v2i2.217.

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The paper describes an adaptive algorithm for power and bit allocations in a multiple user Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) system with Space Division Multiple Access, which operates in a frequency selective fading channel. The zero forcing (ZF) technique is applied to accomplish multi user detection (MUD). A Lagrange multiplier method is applied to obtain a one-step solution for optimal power and bit allocations in this system. The resulting algorithm is advantageous over an alternative Greedy algorithm, because it does not require a time-consuming iterative procedure for its implementation. The algorithm assigns bits and power for all users according to the channel state information (CSI), which is assumed to be fully or partially available to the transmitter. The simulation results show the proposed algorithm operates successfully in multiple user access scenarios.
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Dissertations / Theses on the topic "Space Division Multiple Access (SDMA)"

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Degen, Christoph. "Frequency domain signal processing for space division multiple access with consideration of front end imperfections /." Aachen : Shaker, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014191758&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Amer, Asmaa. "Resource Allocation in NOMA-based cellular networks." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASG089.

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Cette thèse vise à optimiser l'allocation des ressources au sein des systèmes NOMA, en particulier les systèmes NOMA coopératifs en liaison descendante, dans des configurations de stations de base à antenne unique et à antennes multiples. L'objectif est de maximiser l'efficacité spectrale et énergétique, tout en proposant des schémas NOMA plus efficaces qui peuvent tirer parti des avantages du NOMA et répondre aux limitations des schémas actuellement considérés en termes de consommation d'énergie et de complexité des récepteurs. Dans la première contribution, un système NOMA coopératif basé sur le découpage du réseau est étudié pour accueillir à la fois des utilisateurs cellulaires et des paires de dispositifs à dispositifs (D2D) répondant aux exigences de communication mobile large bande améliorée (eMBB) et de communication ultra fiable à faible latence (URLLC). Le problème d'optimisation est formulé comme une maximisation du débit total avec trois variables d'optimisation : le regroupement des utilisateurs NOMA, l'admission sous-jacente des D2D et l'allocation des blocs de ressources. Le problème est décomposé en trois sous-problèmes. Une solution algorithmique séquentielle est proposée, commençant par le regroupement des utilisateurs, suivie de l'allocation des blocs de ressources, et enfin de l'admission des D2D. Les sous-problèmes de regroupement des utilisateurs et d'admission des D2D sont résolus à l'aide d'une solution de théorie de correspondance de type plusieurs-à-un à faible complexité. Le problème d'allocation des blocs de ressources est résolu par une approche heuristique. Dans la deuxième contribution, nous revisitons le compromis entre l'accès des utilisateurs et la complexité de l'annulation d'interférence successive (SIC) des récepteurs NOMA. À mesure que davantage d'utilisateurs partagent les mêmes ressources, l'interférence et la complexité de la SIC augmentent. Contrairement aux schémas NOMA conventionnels basés sur des paires, nous proposons un schéma NOMA coopératif chevauchant, où chaque utilisateur en bord de cellule peut partager des ressources avec plusieurs utilisateurs au centre de la cellule, même si les utilisateurs au centre de la cellule utilisent des ressources orthogonales entre eux. Cette approche améliore la connectivité des utilisateurs, renforce les performances des utilisateurs en bord de cellule et maintient une faible complexité de SIC. Le problème est formulé comme une maximisation de la satisfaction des Qualité de Service (QoS) des utilisateurs en bord de cellule et est résolu à l'aide d'un algorithme de théorie de correspondance de type plusieurs-à-plusieurs avec des stratégies d'échange et d'ajout/suppression. Dans la troisième contribution de la thèse, nous proposons un système hybride d'accès multiple par division spatiale (SDMA)/NOMA, pour s'adapter entre les utilisateurs accédant par NOMA et SDMA en fonction de leur consommation d'énergie. Dans le modèle de consommation d'énergie, contrairement à la littérature NOMA où la puissance est induite par les unités SIC au niveau du récepteur est négligée, nous introduisons un modèle de consommation d'énergie dynamique basé sur la puissance SIC. Le problème est formulé comme une maximisation de l'efficacité énergétique en optimisant la sélection du mode d'accès multiple, le beamforming de la station de base et l'allocation de puissance des utilisateurs. Cette approche empêche une surestimation de l'efficacité énergétique, entraînant une réduction de l'écart entre l'analyse théorique et la conception du système, ce qui est particulièrement critique pour les dispositifs NOMA contraints par l'énergie. Le problème est résolu en utilisant des approches d'approximation convexe successive (SCA), de programmation par différences convexes (DC) et de programmation semi-définie (SDP)
This thesis aims to optimize resources allocation within NOMA systems, particularly downlink cooperative NOMA systems, within single-antenna and multiple antenna base station (BS) configurations. This aims to maximize spectral and energy efficiency, and to propose more efficient NOMA schemes that can reap benefits of NOMA and address the limitations of currently considered NOMA schemes, in terms of power consumption and receiver complexity. In the first contribution, a network-slicing-based cooperative NOMA based system is investigated to accommodate both cellular users and device-to-device (D2D) pairs with enhanced mobile broadband (eMBB) and Ultra reliable low latency communication (URLLC) services requirements. The optimization problem is formulated as sum-throughput maximization with three optimization variables: NOMA-users clustering, underlying D2D- admission, and resource blocks (RBs) allocation. The problem is decoupled into three sub-problems. A sequential algorithmic solution is proposed, starting by users clustering, followed by RBs allocation, and finally D2D admission. The users clustering and D2D admission sub-problems are solved using low-complexity many-to-one matching theory solution. The RBs allocation problem is solved using heuristics approach. In the second contribution, we revisit the trade-off between user access and the successive interference cancellation (SIC) complexity of NOMA receivers. As more users share the same resources, interference and SIC complexity escalate. Unlike conventional pairing-based NOMA schemes, we propose an overlapping cooperative NOMA scheme where each cell-edge user can share resources with multiple cell-center users, even if cell-center users are using orthogonal resources between each other. This approach enhances user connectivity, improves cell-edge user performance, and maintains low SIC complexity. The problem is formulated as maximization of Quality-of-Service (QoS) satisfaction of cell-edge users, and is solved using a many-to-many matching theory algorithm with swapping and add/remove strategies. In the third thesis contribution, we propose a hybrid Space Division Multiple Access (SDMA)/NOMA system, to adapt the multiple access mode, either NOMA or SDMA, based on the power consumption. In the power consumption model, unlike NOMA literature, where power induced by SIC units at the receiver is overlooked, we introduce dynamic power consumption model based on the SIC power. The problem is formulated as maximizing energy efficiency by optimizing the multiple access mode selection, BS beamforming, and user power allocation. This approach prevents overestimation of energy efficiency, consequently, avoids gaps between its theoretical evaluation and practical system design, an aspect particularly critical for energy-constrained NOMA devices. The problem is solved using successive convex approximation (SCA), difference of convex (DC) programming and semidefinite programming (SDP) approaches
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Liu, Jie. "Smart space/frequency division multiple access." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/MQ54467.pdf.

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El, Moutia Abdallah. "Space division multiple access for wireless sensor networks." FIU Digital Commons, 2007. http://digitalcommons.fiu.edu/etd/3125.

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This dissertation proposed a self-organizing medium access control protocol (MAC) for wireless sensor networks (WSNs). The proposed MAC protocol, space division multiple access (SDMA), relies on sensor node position information and provides sensor nodes access to the wireless channel based on their spatial locations. SDMA divides a geographical area into space divisions, where there is one-to-one map between the space divisions and the time slots. Therefore, the MAC protocol requirement is the sensor node information of its position and a prior knowledge of the one-to-one mapping function. The scheme is scalable, self-maintaining, and self-starting. It provides collision-free access to the wireless channel for the sensor nodes thereby, guarantees delay-bounded communication in real time for delay sensitive applications. This work was divided into two parts: the first part involved the design of the mapping function to map the space divisions to the time slots. The mapping function is based on a uniform Latin square. A Uniform Latin square of order k = m2 is an k x k square matrix that consists of k symbols from 0 to k-I such that no symbol appears more than once in any row, in any column, or in any m x m area of main subsquares. The uniqueness of each symbol in the main subsquares presents very attractive characteristic in applying a uniform Latin square to time slot allocation problem in WSNs. The second part of this research involved designing a GPS free positioning system for position information. The system is called time and power based localization scheme (TPLS). TPLS is based on time difference of arrival (TDoA) and received signal strength (RSS) using radio frequency and ultrasonic signals to measure and detect the range differences from a sensor node to three anchor nodes. TPLS requires low computation overhead and no time synchronization, as the location estimation algorithm involved only a simple algebraic operation.
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Atapattu, Lakmali Nadisha Kumari. "Channel tracking in SDMA-based multi-user MIMO-OFDM communications systems." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/65272/1/Lakmali_Atapattu_Thesis.pdf.

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Capacity of current and future high data rate wireless communications depend significantly on how well changes in the wireless channel are predicted and tracked. Generally, this can be estimated by transmitting known symbols. However, this increases overheads if the channel varies over time. Given today’s bandwidth demand and the increased necessity for mobile wireless devices, the contributions of this research are very significant. This study has developed a novel and efficient channel tracking algorithm that can recursively update the channel estimation for wireless broadband communications reducing overheads, therefore increasing the speed of wireless communication systems.
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Jin, Haipeng. "MAC protocol design and capacity study for space division multiple access systems /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3094620.

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Baker, Dirk A. "Space-time block coding with imperfect channel estimates." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1843.

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Thesis (M.S.)--West Virginia University, 2001.
Title from document title page. Document formatted into pages; contains iv, 74 p. : ill. Includes abstract. Includes bibliographical references (p. 73-74).
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Morrison, Andrew. "Direction-of-arrival algorithms for space-time W-CDMA receiver structures." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341786.

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Taylor, Chris Edward. "Terrestrial communication between wireless sensor networks using beam-forming and space division multiple access." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://handle.dtic.mil/100.2/ADA483571.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 2008.
Thesis Advisor(s): Tummala, Murali ; McEachen, John. "June 2008." Description based on title screen as viewed on September 2, 2008. Includes bibliographical references (p. 95-97). Also available in print.
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Dandekar, Kapil Ramesh. "Space division multiple access systems : computational electromagnetic studies of the physical and network layers /." Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008307.

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Books on the topic "Space Division Multiple Access (SDMA)"

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Vandenameele, Patrick. Space division multiple access for wireless local area networks. New York: Kluwer Academic Publishers, 2002.

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der, Perre Liesbet van, and Engels Marc, eds. Space division multiple access for wireless local area networks. Boston: Kluwer Academic Publishers, 2001.

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1952-, Hanzo Lajos, ed. Single-and multi-carrier DS-CDMA: Multi-user detection, space-time spreading, synchronisation, networking and standards. [Piscataway, N.J.]: IEEE Press, 2003.

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Rooyen, Pieter Van. Space-time processing for CDMA mobile communications. Boston: Kluwer Academic Publishers, 2000.

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Space Division Multiple Access for Wireless Local Area Networks. Boston: Kluwer Academic Publishers, 2002. http://dx.doi.org/10.1007/b117501.

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Vandenameele, Patrick. Space Division Multiple Access for Wireless Local Area Networks. Springer, 2013.

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Hernandez, Marco Antonio. Space-Time Multiuser Receivers for Wideband Code Division Multiple Access. Delft Univ Pr, 2002.

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Chava, Harshini. Space time block coding for CDMA wireless communications. 2009.

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Krabel, Eckhard. Konzept für ein globales Datenerfassungssystem auf Nanosatellitenbasis unter Verwendung von Satellite Space Division Multiple Access. 1993.

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Hanzo, Lajos, L.-L. Yang, E.-L. Kuan, and K. Yen. Single and Multi-Carrier DS-CDMA: Multi-User Detection, Space-Time Spreading, Synchronisation, Networking and Standards. Wiley-IEEE Press, 2003.

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Book chapters on the topic "Space Division Multiple Access (SDMA)"

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Weik, Martin H. "space-division multiple access." In Computer Science and Communications Dictionary, 1623. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_17778.

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Jitsumatsu, Yutaka, Tohru Kohda, and Kazuyuki Aihara. "Delay-Doppler Space Division-Based Multiple-Access Solves Multiple-Target Detection." In Multiple Access Communcations, 39–53. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03871-1_5.

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Jitsumatsu, Yutaka, and Tohru Kohda. "Digital Phase Updating Loop and Delay-Doppler Space Division Multiplexing for Higher Order MPSK." In Multiple Access Communications, 1–15. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10262-7_1.

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Davydov, Vadim, Grigoriy Fokin, Vitaly Lazarev, and Sergey Makeev. "Space Division Multiple Access Performance Evaluation in Ultra-Dense 5G Networks." In Lecture Notes in Computer Science, 86–98. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-65726-0_8.

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Brandao, Andre L. "A New Business Dimension." In Managing Telecommunications and Networking Technologies in the 21st Century, 75–91. IGI Global, 2001. http://dx.doi.org/10.4018/978-1-878289-96-4.ch005.

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Space division multiple access (SDMA) is a promising technique useful for increasing capacity, reducing interference and improving overall wireless communication link quality. With a large-scale penetration expected for wireless Internet, the radio link will require significant reduction in cost and increase in capacity, benefits that the proper exploitation of the spatial dimension can offer. Market opportunities with SDMA are significant, as a number of companies have been recently formed to bring products based on this new concept to the wireless marketplace. The approach to SDMA is broad, ranging from "switched-beam techniques" to "adaptive antennas." Basically the technique employs antenna arrays and digital signal processing to achieve the necessary increases incapacity and quality needed in the wireless world.
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Sulyman, Ahmed, and Mostafa Hefnawi. "MIMO Beamforming Schemes for Multiuser Access in OFDM–SDMA." In Orthogonal Frequency Division Multiple Access Fundamentals and Applications, 453–72. Auerbach Publications, 2010. http://dx.doi.org/10.1201/9781420088243-c17.

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"MIMO Beamforming Schemes for Multiuser Access in OFDM–SDMA." In Orthogonal Frequency Division Multiple Access Fundamentals and Applications, 469–88. Auerbach Publications, 2010. http://dx.doi.org/10.1201/9781420088250-21.

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Sulyman, Ahmed, and Mostafa Hefnawi. "MIMO Beamforming Schemes for Multiuser Access in OFDM–SDMA." In Orthogonal Frequency Division Multiple Access Fundamentals and Applications, 453–72. Auerbach Publications, 2010. http://dx.doi.org/10.1201/9781420088250-c17.

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Díaz, Benigno. "Differential Space Time Block Codes for MIMO–OFDM." In Orthogonal Frequency Division Multiple Access Fundamentals and Applications, 267–300. Auerbach Publications, 2010. http://dx.doi.org/10.1201/9781420088243-c10.

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"Differential Space Time Block Codes for MIMO–OFDM." In Orthogonal Frequency Division Multiple Access Fundamentals and Applications, 283–316. Auerbach Publications, 2010. http://dx.doi.org/10.1201/9781420088250-14.

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Conference papers on the topic "Space Division Multiple Access (SDMA)"

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Ilcev, Stojce Dimov. "Space Division Multiple Access (SDMA) applicable for Mobile Satellite Communications." In TELSIKS 2011 - 2011 10th International Conference on Telecommunication in Modern Satellite, Cable and Broadcasting Services. IEEE, 2011. http://dx.doi.org/10.1109/telsks.2011.6143206.

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Fisch, Walter, Vitali Chtchekatourov, and Peter Russer. "Transmitter Frequency and Position Detection Methods For Space Division Multiple Access (SDMA) Systems." In 29th European Microwave Conference, 1999. IEEE, 1999. http://dx.doi.org/10.1109/euma.1999.338435.

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Yui Ming Tsang and R. S. Cheng. "Rate maximization in space-division multiple access (SDMA) /multi-input-single-output (MISO) /OFDM systems under QoS and power constraints." In 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577). IEEE, 2004. http://dx.doi.org/10.1109/icc.2004.1313076.

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El Moutia, Abdallah, Kia Makki, and Niki Pissinou. "Space Division Multiple Access for Wireless Sensor Networks." In 2008 IEEE Conference on Technologies for Homeland Security. IEEE, 2008. http://dx.doi.org/10.1109/ths.2008.4534495.

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Chen, Zhe, Dushyantha A. Basnayaka, and Harald Haas. "Space division multiple access in optical attocell networks." In 2016 IEEE Wireless Communications and Networking Conference Workshops (WCNCW). IEEE, 2016. http://dx.doi.org/10.1109/wcncw.2016.7552704.

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Chen, Zhe, Dushyantha A. Basnayaka, and Harald Haas. "Space division multiple access in optical attocell networks." In 2016 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, 2016. http://dx.doi.org/10.1109/wcnc.2016.7564675.

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Chen, Zhe, and Harald Haas. "Space division multiple access in visible light communications." In 2015 IEEE International Conference on Signal Processing for Communications (ICC). IEEE, 2015. http://dx.doi.org/10.1109/icc.2015.7249135.

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Chen, Jing, Guangyin Xu, Jiandong Hu, Xiushan Wang, and Ling Wang. "Space Division Multiple Access Technology for Free Space Optical Communication." In 2015 2nd International Conference on Electrical, Computer Engineering and Electronics. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icecee-15.2015.245.

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Yin, Jingwei, Pengyu Du, and Xin Wang. "Research on space division multiple access underwater acoustic communication." In the Eighth ACM International Conference. New York, New York, USA: ACM Press, 2013. http://dx.doi.org/10.1145/2532378.2532394.

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Jeromin, Lori L., John E. Kaufmann, and Edward A. Bucher. "Free-space optical code-division multiple-access system design." In OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering, edited by G. Stephen Mecherle. SPIE, 1993. http://dx.doi.org/10.1117/12.149233.

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