Dissertations / Theses on the topic 'Multiple input multiple output'
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Kanday, Balaji Madapuci. "Microcontroller Based Multiple-Input Multiple-Output Transmitter." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605952.
Full textThis paper describes how a microcontroller based system can be used to generate the signals needed in a multiple-input multiple-output (MIMO) system transmitter. The limited computational speed of the microcontroller, along with other tasks which the controller may need to handle, places limits on the throughput of the system, and the complexity of the MIMO signal design. However this can be a low cost design, and the microcontroller can be used to perform other operations in the system, which may make it attractive in some applications.
Tran, Tuan-Anh. "Multiple-input multiple-output optical wireless communications." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:094fbe23-88c3-49c4-b64b-a1de40674123.
Full textPetersen, Samuel. "Multiple-Input Multiple-Output Systems for Spinning Vehicles." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605956.
Full textThis paper investigates the performance of a multiple-input multiple-output (MIMO) digital communication system, when the transmitter is located on a spinning vehicle. In particular, a 2x2 MIMO system is used, with Alamouti coding at the transmitter. Both Rayleigh and Rayleigh plus line-of-sight, or Rician, models combined with a deterministic model to simulate the channel. The spinning of the transmitting vehicle, relative to the stationary receive antennas, modulates the signal, and complicates the decoding and channel parameter estimation processes. The simulated system bit error rate is the primary performance metric used. The Alamouti channel code is shown to perform better than the maximal ratio receiver combining (MRRC) and single receiver (2x1) system in some circumstances and performs similarly to the MRRC in the broadside case.
Zhang, Peichang. "Coherent versus differential multiple-input multiple-output systems." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/376511/.
Full textUppal, Momin Ayub. "Code design for multiple-input multiple-output broadcast channels." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1783.
Full textYu, Kai. "Modeling of Multiple-Input Multiple-Output Radio Propagation Channels." Licentiate thesis, KTH, Signals, Sensors and Systems, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1478.
Full textIn recent years, multiple-input multiple-output (MIMO)systems appear to be very promising since they can provide highdata rates in environments with sucient scattering byexploiting the spatial domain. To design a real MIMO wirelesssystem and predict its performance under certain circumstances,it is necessary to have accurate MIMO wireless channel modelsfor dierent scenarios. This thesis presents dierent models forindoor MIMO radio propagation channels based on 5.2 GHz indoorMIMO channel measurements.The recent research on MIMO radio channel modeling isbriey reviewed in this thesis. The models are categorized intonon-physical and physical models. The non-physical modelsprimarily rely on the statistical characteristics of MIMOchannels obtained from the measured data while the physicalmodels describe the MIMO channel (or its distribution) via somephysical parameters. The relationships between dierent modelsare also discussed.For the narrowband case, a non line-of-sight (NLOS)indoor MIMO channel model is presented. The model is based on aKronecker structure of the channel covariance matrix and thefact that the channel is complex Gaussian. It is extended tothe line-of-sight (LOS) scenario by estimating and modeling thedominant component separately.As for the wideband case, two NLOS MIMO channel modelsare proposed. The rst model uses the power delay prole and theKronecker structure of the second order moments of each channeltap to model the wideband MIMO channel while the second modelcombines a simple single-input single-output (SISO) model withthe same Kronecker structure of the second order moments.Monte-Carlo simulations are used to generate indoor MIMOchannel realizations according to the above models. The resultsare compared with the measured data and good agreement has beenobserved.
Dambul, Katrina D. "Multiple-input multiple-output (MIMO) in optical wireless communications." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558676.
Full textGupte, Abhishek. "SOQPSK Signals in Multiple Input Multiple Output (MIMO) Systems." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605954.
Full textThis paper investigates the use of shaped offset quadrature phase shift keying (SOQPSK) signals in multiple-input multiple-output (MIMO) communication systems. The goal is to integrate commonly used receiver architectures for conventional single-input single-output (SISO) systems into a corresponding MIMO system. The benefits of improved spectral efficiency are juxtaposed against the increased receiver complexity. Bit error rate performances for the SISO and MIMO architectures in a multipath environment are compared and conclusions regarding trade-offs between signal to noise ratio (SNR) and spectral efficiency stated.
Stewart, Kyle Bradley. "Waveform-Diverse Multiple-Input Multiple-Output Radar Imaging Measurements." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1450437383.
Full textNajam, Ali Imran. "Multiple-input multiple-output antennas for ultra wideband communications." Grenoble INPG, 2010. http://www.theses.fr/2010INPG0043.
Full textUWB technology has rapidly emerged in the areas of WPAN and sensors networks featuring high data rate communications. The applications of UWB are limited to very short-range communications due to the extremely low transmitted power. The combination of MIMO techniques with UWB has been considered as a solution to improve the range. However, a fundamental challenge arises for the design of antennas that faces the constraints offered by UWB systems and multi-antennas systems, and the constraints of size and cost. In this context, several new UWB-MIMO antennas are proposed. Their characterization is based on the parameters relevant to conventional antenna design and the specific parameters relevant to the UWB-MIMO antenna design. In particular, a new compact design with high isolation by inserting the inverted-Y shaped stub on the ground plane is proposed. A new method for modelling the mutual coupling, is also introduced which has the advantage of offering new approach to compensate it
Di, Viesti Pasquale <1994>. "Colocated multiple-input multiple-output radars for smart mobility." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10113/1/Di_Viesti_Pasquale_Thesis.pdf.
Full textYu, Kai. "Multiple-Input Multiple-Output Radio Propagation Channels : Characteristics and Models." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-138.
Full textBale, Viktor. "Computationally efficient equalisation of broadband multiple-input multiple-output systems." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437110.
Full textLi, Ran. "Optical multiple input and multiple output (MIMO) in multimode fibre." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:1770da43-e93b-462b-866f-beb5f972ce06.
Full textCao, Pan. "Resource Allocation for Multiple-Input and Multiple-Output Interference Networks." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-161382.
Full textWaters, Deric Wayne. "Signal Detection Strategies and Algorithms for Multiple-Input Multiple-Output Channels." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7514.
Full textDing, Minhua. "Multiple-input multiple-output wireless system designs with imperfect channel knowledge." Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1335.
Full textEitel, Emna [Verfasser]. "Tracking of Time-Varying Multiple Input Multiple Output Channels / Emna Eitel." München : Verlag Dr. Hut, 2014. http://d-nb.info/1047994879/34.
Full textDai, Xiaoguang, and 戴晓光. "Receiver complexity reduction of multiple-input multiple-output wireless communication systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46589508.
Full textMcNamara, Darren Phillip. "Characterisation and investigation of multiple-input multiple-output wireless communication channels." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274672.
Full textRzepniewski, Adam K. (Adam Kamil) 1976. "Cycle-to-cycle control of multiple input-multiple output manufacturing processes." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32392.
Full text"June 2005."
Includes bibliographical references (leaves 199-200).
In-process closed-loop control of many manufacturing processes is impractical owing to the impossibility or the prohibitively high cost of placing sensors and actuators necessary for in-process control. Such processes are usually left to statistical process control methods, which only identify problems without specifying solutions. In this thesis, we look at a particular kind of manufacturing process control, cycle-to-cycle control. This type of control is similar to the better known run-by-run control. However, it is developed from a different point of view allowing easy analysis of the process' transient closed-loop behavior due to changes in the target value or to output disturbances. Both types are methods for using feedback to improve product quality for processes that are inaccessible within a single processing cycle but can be changed between cycles. Through rigorous redevelopment of the control equations, we show these methods are identical in their response to output disturbances, but different in their response to changes in the target specification. Next, we extend these SISO results to multiple input-multiple output processes. Gain selection, stability, and process variance amplification results are developed. Then, the limitation of imperfect knowledge of the plant model is imposed. This is consistent with manufacturing environments that require minimal cost and number of tests in determining a valid process model. The effects of this limitation on system performance and stability are discussed. To minimize the number of pre-production experiments, a generic, easily calibrated model is developed for processes with a regional-type coupling between the inputs and outputs, in which one input affects a region of outputs.
(cont.) This model can be calibrated in just two experiments and is shown to be a good predictor of the output. However, it is determined that models for this class of process are ill- conditioned for even moderate numbers of inputs and outputs. Therefore, controller design methods that do not rely on direct plant gain inversion are sought and a representative set is selected: LQR, LQG, and H-infinity. Robust stability bounds are computed for each design and all results are experimentally verified on a 110 input- 10 output discrete-die sheet metal forming process, showing good agreement.
by Adam Kamil Rzepniewski.
Ph.D.
Bahceci, Israfil. "Multiple-Input Multiple-Output Wireless Systems: Coding, Distributed Detection and Antenna Selection." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-08262005-022321/.
Full textAltunbasak, Yucel, Committee Chair ; Mersereau, Russell M., Committee Member ; Fekri, Faramarz, Committee Member ; Smith, Glenn, Committee Member ; Huo, Xiaoming, Committee Member. Includes bibliographical references.
Yue, Guosen. "Code optimization and analysis for multiple-input and multiple-output communication systems." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/2758.
Full textMilliner, David Louis. "Low-complexity list detection algorithms for the multiple-input multiple-output channel." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/37248.
Full textKhalid, Farhan [Verfasser]. "Hybrid Precoding for Multiuser Multiple-Input Multiple-Output Mobile Communications / Farhan Khalid." Aachen : Shaker, 2013. http://d-nb.info/1051575907/34.
Full textGulati, Vivek. "Concatenated codes for the multiple-input multiple-output quasi-static fading channel." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1477.
Full textSchneider, Daniel [Verfasser]. "Inhome Power Line Communications using Multiple Input Multiple Output Principles / Daniel Schneider." München : Verlag Dr. Hut, 2012. http://d-nb.info/1022535307/34.
Full textWebb, Matthew William. "Analysis of multiple-input multiple-output wireless communication systems in cochannel interference." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435743.
Full textLee, Zhi Hou. "Improved multiple input multiple output blind equalization algorithms for medical implant communication." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/28726/.
Full textSpencer, Quentin H. "Transmission Strategies for Wireless Multi-user, Multiple-Input, Multiple-Output Communication Channels." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd378.pdf.
Full textShanmugam, Pravinkumar. "Multiple-user multiple-input multiple-output beam-forming and frequency reuse in millimeter wave communication." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1603753.
Full textThis paper explains a new beam-forming technique implemented in a deterministic Multiple-Input Multiple-Output (MIMO) channel model in 60 GHz millimeter wave frequency. We calculate path loss between the transmitter and receiver antenna elements in the line of sight path. Assuming that Channel State Information (CSI) is known as the deterministic values at the transmitter, the Composite Transfer Function (CTF) derived from the CSI generates orthogonal beams. The orthogonal beam allows us to reuse the frequency at the same time slot with the capability of multi-user MIMO. Our beam forming technique controls the radiated power at the transmitter in such a way that the power received at a particular receiving antenna element is 0dB, and it is suppressed to less than -60dB at other receiving elements. We study the performance of our proposed beam-forming technique by transmitting the QPSK modulated signal through the orthogonal beams, and analyzing the bit error rate curve.
Li, Yikai. "Non-Orthogonal Multiple Access for Massive Multiple-Input Multiple-Output Relay-Aided/Cell-Free Networks." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/dissertations/1906.
Full textWong, Kevin. "Multiple Input Single Output (MISO) Tablet/ Phone Charger." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/925.
Full textTong, Yajian. "Multiple-input multiple-output converters for future low-voltage DC power distribution architectures." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52780.
Full textApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Zhang, Yuqi. "Lattice Reduction Aided Multiple Input Multiple Output Detection Algorithm Design For 5G Communication." Thesis, KTH, Teknisk informationsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209559.
Full textUnder de senaste åren har MIMO system fått ökat intensiva forskningsintressenför sina stora möjligheter att uppnå högre spektral effektivitet och datahastighet.Överföring av era dataströmmar i samma tid och frekvensresurser lederemellertid samtidigt till allvarlig störning mellan sända signaler. För att lösadetta problem föreslås lattice reduction som en suboptimal maximal likelihoodalgorithm. Det syftar till att hitta en uppsättning bättre basviktorer för kanalmatrisenoch resultera i tillfredsställande prestandaförbättringar jämfört medkonventionella linjära detektorer. Men den genomsnittliga komplexiteten hoslattice reduction är för hög för praktiska användningsområden. Denna avhandlingstuderar konventionella linjära detekteringsalgoritmer och lattice reductiondetekteringsalgoritmer för uplink-mottagare. Vidare föreslås en iterativ latticereduction algoritm genom utnyttjande av frekvenssamhäftningen i ett OFDMsystem.I denna avhandling verifieras utförandet av olika algoritmer i olika scenariergenom simulering. Resultat visar lovande prestandaförbättringar för presenteradecc reduction detekteringsalgoritmer, till kostnaden för en acceptabelkomplexitetsökning.
Huang, Jinliang. "Adaptation in multiple input multiple output systems with channel state information at transmitter." Licentiate thesis, Stockholm : Institutionen för elektronik, dator- och programvarusystem, Kungliga tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4443.
Full textMartin, Tracy A. "Analysis and simulation of disadvantaged receivers for multiple-input multiple-output communications systems." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5188.
Full textThis thesis investigates the simulation performance of Multiple-Input Multiple-Output (MIMO) communication systems. Uncoded narrowband and wideband MIMO systems are presented and simulated. The system is further refined with the addition of Space-Time Codes (STC) and Channel State Information at the Transmitter (CSIT). A disadvantaged receiver is subsequently introduced to the system lacking the optimization enjoyed by the native receiver. Simulation and analysis was conducted with multiple modulation schemes and antenna configurations. Rayleigh and Rician fading models are developed and simulated as the wireless channel. Receiver performance results based on MATLAB simulation are compared and presented.
Surajudeen-Bakinde, Nazmat Toyin. "Genetic algorithms for multiple-input multiple-output and ultra wideband wireless communication systems." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.548809.
Full textsaha, dhrubajyoti. "PLAYBACK BUFFERING AND CONTROL FOR LINEAR MULTIPLE INPUT MULTIPLE OUTPUT NETWORK CONTROL SYSTEMS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1363411715.
Full textRajagopal, Ravikiran. "An algebraic view of multidimensional multiple-input multiple-output finite impulse response equalizers." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1070398845.
Full textTejera, Palomares Pedro. "Principles and algorithms for transmission in multiple-input multiple-output broadband multiuser systems." kostenfrei, 2008. http://mediatum2.ub.tum.de/doc/652105/652105.pdf.
Full textJaldén, Joakim. "Detection for multiple input multiple output channels : analysis of sphere decoding and semidefinite relaxation." Doctoral thesis, KTH, Signalbehandling, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4199.
Full textEtt grundläggande problem som påträffats inom digital kommunikation är detektering av en symbolvektor, tillhörande ett ändligt symbolalfabet, som sänts över en MIMO (från engelskans multiple-input multiple-output) kanal med Gausiskt brus. Detta problem påträffas bland annat då symboler sänts över en trådlös kanal med flera antenner hos mottagaren och sändaren samt då flera användare i ett CDMA system simultant skall avkodas. In denna avhandling behandlas två mottagaralgoritmer konstruerade för detta ändamål. Algoritmerna har sin bakgrund i andra forskningsområden men kan i nuläget sägas vara mycket välkända inom kommunikationsområdet. De benämns vanligtvis som sfäravkodaren (eng. sphere decoder) samt den semidefinita relaxeringsdetektorn (eng. semidefinite relaxation detector). Algoritmerna analyseras i denna avhandling matematiskt genom att införa förenklande antaganden som är relevanta och applicerbara för de kommunikationsproblem som är av intesse. Den första algoritmen, sfäravkodaren, löser dessa detektionsproblem på ett optimalt sätt i betydelsen att den minimerar sannolikheten för att detektorn fattar ett felaktigt beslut rörande det sända meddelandet (symbolvektorn). Också vad gäller algoritmens komplexitet har simuleringar visat att den är oväntat låg, åtminstone vid höga signalbrusförhållanden (SNR). Trots att det är allmänt känt att algoritmen i sämsta fall har exponentiell komplexitet så har detta lett till den allmänt spridda uppfattningen att medelkomplexiteten (eller den förväntade komplexiteten) endast är polynomisk vid höga signalbrusförhållanden. Ett av huvudbidragen i denna avhandling är att visa att denna uppfattning är felaktig och att också medelkomplexiteten växer exponentiellt i antalet symboler som simultant detekteras. Ytterligare ett bidrag ligger i att ge en alternativ förklaring till den observerat låga medelkomplexiteten. Det visas att den exponentiella hastighet med vilken komplexiteten växer beror på signalbrusförhållande, och att den är låg för höga SNR. Den andra algoritmen, den semidefinita relaxeringsdetektorn, erbjuder polynomisk komplexitet vid en något högre felsannolikhet. Intressant nog har dock felsannolikheten tidigare, genom simuleringar, visat sig vara endast marginellt högre än felsannolikheten hos den optimala mottagaren. Bidraget som relaterar till den semidefinita relaxeringsmottagaren ligger i att både förklara och i att ge en specifik kvatifierbar mening åt uttalandet att felsannolikheten endast är marginellt högre. I syfte att åstadkomma detta studeras diversitetsordningen för detektorn, och det bevisas att diversitetsordningen för den semidefinita relaxeringsdetektorn är densamma som för den optimala mottagaren. Utöver detta karakteriseras också de krav som måste uppfyllas för att den detektorn skall finna den optimala lösningen.
QC 20100901
Jaldén, Joakim. "Detection for multiple input multiple output channels : analysis of sphere decoding and semidefinite relaxation /." Stockholm : Signal Processing Laboratory, School of Electrical Engineering, Kungliga Tekniska högskolan (KTH), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4199.
Full textAlamgir, Mohammed. "Different Multiple Input Multiple Output Systems." Thesis, 2003. https://vuir.vu.edu.au/268/.
Full textAlamgir, Mohammed. "Different Multiple Input Multiple Output Systems." 2003. http://eprints.vu.edu.au/268/1/02whole.pdf.
Full textchan, chih-chiao, and 詹智喬. "Multiple input Multiple output techniques inIEEE 802.16 standard." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/49900197675255455707.
Full text國立雲林科技大學
電機工程系碩士班
95
IEEE 802.16 is the current standard for wireless broadband network, in which the techniques and specifications of the physical (PHY) and medium access control (MAC) layers in wireless metropolitan area networks (MAN) are defined. In this thesis, we mainly focus on the investigation of multiple input multiple output techniques in IEEE802.16 standard. Under various parameter setups in Reed-Solomon (RS) and convolutional codes and for different modulation techniques, we have performed the analysis for the single antenna transmission system and multiple antenna transmission system performance. The channel estimation and signal detection are used to mitigate the multipath fading effect and signal decode. A metropolitan area network is found to exhibit a lot of advantages. The MIMO techniques is a new generation’s wireless communication techniques. The goal of our research is to deeply survey the system through its model construction and analysis. The simulation results may provide suggestions to system constructions.
Wu, Yueh-Hsun, and 吳岳勳. "Uncooperative-Multi-Cell Multiple-Input-Multiple-Output System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/73925213408941771174.
Full text長庚大學
電機工程學系
99
Stable and high data throughput is prerequisite to many wireless applications in present. By using antenna arrays at both the transmitter and the receiver, MIMO system can substantially boost its spatial multiplexing gain which implies a linear increment of channel capacity proportional to the number of antennas. However, due to the various transmission environments, the MIMO system is often suffered the rank-deficient problem. For solving the problems mentioned above, in this study, we propose an innovative and practically attainable downlink system with multiple access points and multiple mobile stations each having multiple antennas, referred to as the Uncooperative-Multi-Cell Multiple-Input-Multiple-Output system. In the UMC-MIMO system, each mobile station is allowed to receive several independent data streams from multiple access points. A set of noise-subspace-based receive beamformers is employed at the MS to suppress mutual interferences among data streams from various BSs. Furthermore, the receive beamformers are implemented in an adaptive way by using the GSC structure. With this arrangement, we may have the transmit signal dimension high enough to pre-cancel the Inter-Stream-Interferences (MAI) at each transmit end. As computer simulations, the UMC-MIMO channel can be decomposed into a large number of independent subchannels which significantly increase the channel capacity.Keywords:MIMO, GSC, Interference cancellation
Gor, Leon. "Complexity reduction in multiple input multiple output algorithms." Thesis, 2007. https://vuir.vu.edu.au/1409/.
Full textGor, Leon. "Complexity reduction in multiple input multiple output algorithms." 2007. http://eprints.vu.edu.au/1409/1/gor.pdf.
Full textLove, David James. "Feedback methods for multiple-input multiple-output wireless systems." Thesis, 2004. http://repositories.lib.utexas.edu/bitstream/handle/2152/2073/lovedj042.pdf.
Full text