Zaloguj się

Gotowe bibliografie tematyczne / Channel capacity / Rozprawy doktorskie

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Channel capacity.

Rozprawy doktorskie na temat „Channel capacity”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „Channel capacity”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.

1

VIEIRA, ROBSON DOMINGOS. "MIMO MEASURED CHANNELS: CAPACITY RESULTS AND ANALYSIS OF CHANNEL PARAMETERS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7954@1.

Pełny tekst źródła

Streszczenie:

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Sistemas com múltiplas antenas transmissoras e receptoras, também conhecidos como sistemas MIMO (Multiple Input-Multiple Output), têm sido apontados como uma solução para aumentar a capacidade de enlaces sem fio, permitindo aos usuários utilizar aplicações com altas taxas de dados. Isto é extremamente importante em sistemas onde a capacidade obtida com as técnicas tradicionais é bastante limitada devido às características do ambiente de propagação. Com o sistema MIMO, algumas destas características são exploradas para criar

Style APA, Harvard, Vancouver, ISO itp.

2

Abdelaziz, Amr Mohamed. "Information Theoretical Studies on MIMO Channel with Limited Channel State Information." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500592938716914.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

3

Reátegui, del Águila Fernando. "On the capacity of cognitive interference channel structures." Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/807077/.

Pełny tekst źródła

Streszczenie:

The cognitive interference channel extends the classical two-user interference channel to have unidirectional cooperation at the transmitters. In this model, the cognitive transmitter is assumed to have noncausal knowledge of the other transmitter's current message (primary message). This a priori knowledge is used by the cognitive user to accomplish its two main purposes, i.e., to relay the primary message in order to boost the primary user's data rate and to maximise its own data rate by cancelling the interference at its receiver. The cognitive interference channel is well studied in the li

Style APA, Harvard, Vancouver, ISO itp.

4

Clower, Terry L. "Increasing Telecommunications Channel Capacity: Impacts on Firm Profitability." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc279298/.

Pełny tekst źródła

Streszczenie:

In calling for the deployment of high-capacity telecommunications infrastructures, the Clinton Administration is relying on market forces to drive demand toward self-sustaining development. There is little doubt that many firms will embrace the new telecommunications services for a variety of reasons including market differentiation, vertical market integration, and other organization-specific factors. However, there is little evidence at the firm level that adopting the use of increased-capacity telecommunications technologies is associated with improvements in firm profitability. This study

Style APA, Harvard, Vancouver, ISO itp.

5

Potter, Christopher G., Adam G. Panagos, Kurt Kosbar, and William Weeks. "OPTIMAL TRAINING PARAMETERS FOR CONTINUOUSLY VARYING MIMO CHANNELS." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/605025.

Pełny tekst źródła

Streszczenie:

ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>To correctly demodulate a signal sent through a multiple-input multiple-output (MIMO) channel, a receiver may use training to learn the channel parameters. The choice of training parameters can significantly impact system performance. Training too often yields low throughput while training infrequently produces poor channel estimates and increased transmission errors. Previous work on optimal

Style APA, Harvard, Vancouver, ISO itp.

6

Panagos, Adam G., and Kurt Kosbar. "A GRAPHICAL USER INTERFACE MIMO CHANNEL SIMULATOR." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605799.

Pełny tekst źródła

Streszczenie:

International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California<br>Multiple-input multiple-output (MIMO) communication systems are attracting attention because their channel capacity can exceed single-input single-output systems, with no increase in bandwidth. While MIMO systems offer substantial capacity improvements, it can be challenging to characterize and verify their channel models. This paper describes a software MIMO channel simulator with a graphical user interface that allows the user to easily investigate a number of MIMO channe

Style APA, Harvard, Vancouver, ISO itp.

7

Guha, Saikat 1980. "Classical capacity of the free-space quantum-optical channel." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/87908.

Pełny tekst źródła

Streszczenie:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>MIT Institute Archives copy has MIT Research Laboratory of Electronics t.p.<br>Also issued with MIT Research Laboratory of Electronics t.p. preceding thesis t.p.<br>Includes bibliographical references (leaves 114-116).<br>Exploring the limits to reliable communication rates over quantum channels has been the primary focus of many researchers over the past few decades. In the present work, the classical information carrying capacity of the free-space quantum optical channel has b

Style APA, Harvard, Vancouver, ISO itp.

8

Bonello, Nicholas. "Near-capacity fixed-rate and rateless channel code constructions." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/68774/.

Pełny tekst źródła

Streszczenie:

Fixed-rate and rateless channel code constructions are designed for satisfying conflicting design tradeoffs, leading to codes that benefit from practical implementations, whilst offering a good bit error ratio (BER) and block error ratio (BLER) performance. More explicitly, two novel low-density parity-check code (LDPC) constructions are proposed; the first construction constitutes a family of quasi-cyclic protograph LDPC codes, which has a Vandermonde-like parity-check matrix (PCM). The second construction constitutes a specific class of protograph LDPC codes, which are termed as multilevel s

Style APA, Harvard, Vancouver, ISO itp.

9

Tau, Sieskul Bamrung [Verfasser]. "NLoS Localization and UWB Channel Capacity Analysis / Bamrung Tau Sieskul." Aachen : Shaker, 2010. http://d-nb.info/1080766995/34.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

10

Shukla, Rahul. "Effects of UE Speed on MIMO Channel Capacity in LTE." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862877/.

Pełny tekst źródła

Streszczenie:

With the introduction of 4G LTE, multiple new technologies were introduced. MIMO is one of the important technologies introduced with fourth generation. The main MIMO modes used in LTE are open loop and closed loop spatial multiplexing modes. This thesis develops an algorithm to calculate the threshold values of UE speed and SNR that is required to implement a switching algorithm which can switch between different MIMO modes for a UE based on the speed and channel conditions (CSI). Specifically, this thesis provides the values of UE speed and SNR at which we can get better results by switching

Style APA, Harvard, Vancouver, ISO itp.

11

Kariuki, Paul Njoroge 1976. "The capacity of a non-coherent channel : multi user setting." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87238.

Pełny tekst źródła

Streszczenie:

Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.<br>Includes bibliographical references (leaves 34-35).<br>by Paul Njoroge Kariuki.<br>M.Eng.

Style APA, Harvard, Vancouver, ISO itp.

12

Hossan, Mohammad Kamal. "On the Secrecy Capacity of Fading Gaussian Wire-Tap Channel." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27565.

Pełny tekst źródła

Streszczenie:

We consider the so called ?wire-tap channel?, where a transmitter sends secret information to its receiver in the presence of an eavesdropping receiver with similar signal processing capability as the desired receiver. It is assumed that all the communication links have time varying signal strengths which are only known at the corresponding receivers and not at the transmitter. In this thesis, we address the problem of characterizing the maximum possible rate of secret and reliable information transmission on such a wire-tap channel. We first characterize the secrecy capacity of a correspondin

Style APA, Harvard, Vancouver, ISO itp.

13

Klitorakis, Petros. "On the capacity of a cellular CDMA system reverse channel." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://sirsi.nps.navy.mil/uhtbin/hyperion-image/02Mar%5FKlitorakis.pdf.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

14

Yong, Xuerong. "The channel capacity of one and two-dimensional constrained codes /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?COMP%202002%20YONG.

Pełny tekst źródła

Streszczenie:

Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.<br>Includes bibliographical references (leaves 105-110). Also available in electronic version. Access restricted to campus users.

Style APA, Harvard, Vancouver, ISO itp.

15

Pottkotter, Andrew A. "Maximizing Channel Capacity based on Antenna and MIMO Channel Characteristics and its Application to Multimedia Data Transmission." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1430317210.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

16

King, Timothy William. "Optimization of the Fading MIMO Broadcast Channel: Capacity and Fairness Perspectives." Thesis, University of Canterbury. Electrical and Computer Engineering, 2009. http://hdl.handle.net/10092/3201.

Pełny tekst źródła

Streszczenie:

Multiple input multiple output (MIMO) systems are now a proven area in current and future telecommunications research. MIMO wireless channels, in which both the transmitter and receiver have multiple antennas, have been shown to provide high bandwidth efficiency. In this thesis, we cover MIMO communications technology with a focus on cellular systems and the MIMO broadcast channel (MIMO-BC). Our development of techniques and analysis for the MIMO-BC starts with a study of single user MIMO systems. One such single user technique is that of antenna selection. In this thesis, we discuss various f

Style APA, Harvard, Vancouver, ISO itp.

17

Potter, Chris. "Single Bounce Air to Ground Communication Channel Capacity for MIMO Applications." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604770.

Pełny tekst źródła

Streszczenie:

ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California<br>This paper addresses the air-to-ground communication problem, where multiple transmit antennas are used on the aircraft to combat multi-path interference. The channel is assumed to have a line-of-sight component and a single ground reflection. Multiple input multiple output (MIMO) techniques can be used in this situation, to increase the reliability and data rate. In this pap

Style APA, Harvard, Vancouver, ISO itp.

18

Mowinckel, Erland Kragh. "Flood Capacity Improvement of San Jose Creek Channel Using HEC-RAS." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/583.

Pełny tekst źródła

Streszczenie:

The Santa Ynez Mountains of Santa Barbara County, California, have seen many major storm events during the past century. San Jose Creek, which runs out of these mountains, through the town of Goleta, and into the Pacific Ocean, has experienced several intense flood events as a result. The lower portion of the creek was diverted in 1960 to alleviate flooding through Old Town Goleta. However, flooding still occurred in the storms of 1995 and 1998. This study incorporates a hydraulic analysis component of a project aimed at re-designing this diverted portion of the channel. It presents an an

Style APA, Harvard, Vancouver, ISO itp.

19

Fiacco, Mauro. "Intelligent picocells for adaptive indoor coverage and capacity." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/844492/.

Pełny tekst źródła

Streszczenie:

This dissertation presents and develops the Intelligent Picocell as a solution for high bit rate, efficient bandwidth indoor wireless communication. The research has examined different aspects of the indoor radio propagation environment and system implementation in order to highlight key benefits of the proposed architecture. Explosive growth in demand for indoor wireless communications motivates research into this novel radio architecture. The architecture should be capable of tailoring capacity and coverage to the needs of the specific indoor environment, while maximising spectral efficiency

Style APA, Harvard, Vancouver, ISO itp.

20

Taparugssanagorn, A. (Attaphongse). "Evaluation of MIMO radio channel characteristics from TDM-switched MIMO channel sounding." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514286506.

Pełny tekst źródła

Streszczenie:

Abstract The present dissertation deals with the evaluation of multiple-input multiple-output (MIMO) radio channel characteristics from time-division multiplexing (TDM)-switched MIMO channel sounding. The research can be divided into three main areas. First, the impacts of phase noise in TDM-switched MIMO channel sounding on channel capacity are studied. Second, we focus on those impacts on channel parameter estimation using the SAGE algorithm. And in the last part, spatial correlation, channel eigenvalue distribution, and ergodic capacity in realistic environments are analyzed. The rationale

Style APA, Harvard, Vancouver, ISO itp.

21

Teotia, Seemant. "Influence of the Number of Degrees of Freedom on the Capacity of Incoherent Optical Fiber Communication Systems." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27497.

Pełny tekst źródła

Streszczenie:

The purpose of this dissertation is to find the channel capacity in optical fiber communication systems when incoherent detection is used with single (polarization filtering) and two-polarizations (no polarization filtering). Optical fiber systems employ photodetectors that convert optical intensity to electrical current. Bandpass vector fields may be represented by four orthogonal baseband components corresponding to two quadrature phases and two orthogonal polarizations. Intensity is proportional to the sum of the squares of these four components. In the case of a coherent receiver, a stro

Style APA, Harvard, Vancouver, ISO itp.

22

Jiang, Jing. "Capacity-approaching data transmission in MIMO broadcast channels." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11208.

Pełny tekst źródła

Streszczenie:

This dissertation focuses on downlink multi-antenna transmission with packet scheduling in a wireless packet data network. The topic is viewed as a critical system design problem for future high-speed packet networks requiring extremely high spectral efficiency. Our aim is to illustrate the interaction between transmission schemes at the physical layer and scheduling algorithms at the medium access control (MAC) layer from a sum-capacity perspective. Various roles of multiple antennas are studied under channel-aware scheduling, including diversity, beamforming and spatial multiplexing. At a sy

Style APA, Harvard, Vancouver, ISO itp.

23

MEDEIROS, Rex Antonio da Costa. "Zero-Error capacity of quantum channels." Universidade Federal de Campina Grande, 2008. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1320.

Pełny tekst źródła

Streszczenie:

Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-08-01T21:11:37Z No. of bitstreams: 1 REX ANTONIO DA COSTA MEDEIROS - TESE PPGEE 2008..pdf: 1089371 bytes, checksum: ea0c95501b938e0d466779a06faaa4f6 (MD5)<br>Made available in DSpace on 2018-08-01T21:11:37Z (GMT). No. of bitstreams: 1 REX ANTONIO DA COSTA MEDEIROS - TESE PPGEE 2008..pdf: 1089371 bytes, checksum: ea0c95501b938e0d466779a06faaa4f6 (MD5) Previous issue date: 2008-05-09<br>Nesta tese, a capacidade erro-zero de canais discretos sem memória é generalizada para canais quânticos. Uma nova capacidade para a transmiss

Style APA, Harvard, Vancouver, ISO itp.

24

Strelchuk, Sergii. "Superactivation of the channel capacity and teleportation protocols in quantum information theory." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648259.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

He, Rong. "AMPS co-channel interference rejection techniques and their impact on system capacity." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10022008-063026/.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

26

Alonso, Javier. "M.I.M.O Channel Model for High Capacity Wireless Networks and Simulator for Performance Analysis." Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7784.

Pełny tekst źródła

Streszczenie:

<p>The wireless communications have suffered, in these last years, one of the greater technological growth within the communications via radio. The application of multiple antennas, as much in transmission as in reception has taken to an impulse of the study of different models from propagation channels.</p><p>Taking this into consideration, the different types from mentioned models are going to be studied.</p><p>The work that the ISY department at the Institute of Technology of the Linköping University has proposed is to develop to a propagation channel model, with several antennas in recepti

Style APA, Harvard, Vancouver, ISO itp.

27

Guvensen, Gokhan Muzaffer. "Near Capacity Operating Practical Transceivers For Wireless Fading Channels." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610398/index.pdf.

Pełny tekst źródła

Streszczenie:

Multiple-input multiple-output (MIMO) systems have received much attention due to their multiplexing and diversity capabilities. It is possible to obtain remarkable improvement in spectral efficiency for wireless systems by using MIMO based schemes. However, sophisticated equalization and decoding structures are required for reliable communication at high rates. In this thesis, capacity achieving practical transceiver structures are proposed for MIMO wireless channels depending on the availability of channel state information at the transmitter (CSIT). First, an adaptive MIMO scheme based on

Style APA, Harvard, Vancouver, ISO itp.

28

Khatami, Seyed Mehrdad. "Read Channel Modeling, Detection, Capacity Estimation and Two-Dimensional Modulation Codes for TDMR." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/577306.

Pełny tekst źródła

Streszczenie:

Magnetic recording systems have reached a point where the grain size can no longer be reduced due to energy stability constraints. As a new magnetic recording paradigm, two-dimensional magnetic recording (TDMR) relies on sophisticated signal processing and coding algorithms, a much less expensive alternative to radically altering the media or the read/write head as required for the other technologies. Due to 1) the significant reduction of grains per bit, and 2) the aggressive shingled writing, TDMR faces several formidable challenges. Firstly, severe interference is introduced in both down-tr

Style APA, Harvard, Vancouver, ISO itp.

29

Das, Gupta Jishu. "Effect of pedestrian movement on MIMO-OFDM channel capacity in an indoor environment." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/38632/1/Jishu_Das_Gupta_Thesis.pdf.

Pełny tekst źródła

Streszczenie:

The rapid growth of mobile telephone use, satellite services, and now the wireless Internet and WLANs are generating tremendous changes in telecommunication and networking. As indoor wireless communications become more prevalent, modeling indoor radio wave propagation in populated environments is a topic of significant interest. Wireless MIMO communication exploits phenomena such as multipath propagation to increase data throughput and range, or reduce bit error rates, rather than attempting to eliminate effects of multipath propagation as traditional SISO communication systems seek to do. The

Style APA, Harvard, Vancouver, ISO itp.

30

Fu, Weihuang. "Analytical Model for Capacity and Delay Optimization in Wireless Mesh Networks." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1289937944.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

31

Chow, Y. C. "Performance analysis of bandwidth-efficient modulation schemes for high capacity wireless networks 1." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337257.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

32

Nair, Lakshmi Ravindran. "Industrial and office wideband MIMO channel performance." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-11262009-181005/.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

33

Zhou, Wen, and 周雯. "A study of channel estimation for OFDM systems and system capacity forMIMO-OFDM systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45555850.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

34

Pal, Arindam. "Modelling the impact of antenna radiation patterns and propagation conditions on MIMO channel capacity." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435739.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

35

Panagos, Adam, and Kurt Kosbar. "The Sum-Rate Capacity of a Cognitive Multiple Access Sensor Network." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604466.

Pełny tekst źródła

Streszczenie:

ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>This paper investigates the sum-rate capacity of a cognitive multiple access (MAC) sensor network. The multiple access network consists of K sensors communicating to a common base station. Outside of the network exists another user of the radio spectrum. Each sensor of the MAC network is aware (i.e. cognitive) of this user, denoted the primary user, and transmits in a manner to avoid any i

Style APA, Harvard, Vancouver, ISO itp.

36

Li, Longguang. "On the capacity of free-space optical intensity channels." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT028/document.

Pełny tekst źródła

Streszczenie:

Les systèmes de communication à intensité optique en espace libre (FSOI) sont largement utilisés dans les communications à courte portée, telles que les communications infrarouges entre des dispositifs électroniques portables. L’émetteur de ces systèmes module sur l’intensité des signaux optiques émis par des diodes électroluminescentes (LEDs) ou des diodes laser (LDs), et le récepteur mesure les intensités optiques entrantes au moyen de photodétecteurs. Les entrées ne sont pas négatives car elles représentent des intensités. En outre, ils sont généralement soumis à des contraintes de puissanc

Style APA, Harvard, Vancouver, ISO itp.

37

Holzer, Justin T. "Wideband Channel Characterization for MIMO Scenario." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd481.pdf.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

38

Gulati, 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.

Pełny tekst źródła

Streszczenie:

The use of multiple antennas at the transmitter and/or the receiver promises greatly increased capacity. This can be useful to meet the ever growing demand of wireless connectivity, provided we can find techniques to efficiently exploit the advantages of the Multiple-Input Multiple-Output (MIMO) system. This work explores the MIMO system in a flat quasi-static fading scenario. Such a channel occurs, for example, in packet data systems, where the channel fade is constant for the duration of a codeword and changes independently from one transmission to another. We first show why it is hard to co

Style APA, Harvard, Vancouver, ISO itp.

39

Yu, 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.

Pełny tekst źródła

Streszczenie:

<p>In 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 mode

Style APA, Harvard, Vancouver, ISO itp.

40

Onubogu, Okechukwu J. "Simulation and measurement based MIMO & vehicular channel characterization at 920 MHz and 5.8 GHz." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/96272/1/Okechukwu_Onubogu_Thesis.pdf.

Pełny tekst źródła

Streszczenie:

This thesis is a step forward in characterizing radio propagation channels in vehicular communications systems using multiple transmitting and receiving antennas. The vehicular channel measurement, modelling and characterization performed in this thesis would help system designers to develop a deeper understanding of the underlying propagation channels needed for the design of efficient and reliable vehicular communications systems.

Style APA, Harvard, Vancouver, ISO itp.

41

Li, Longguang. "On the capacity of free-space optical intensity channels." Electronic Thesis or Diss., Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT028.

Pełny tekst źródła

Streszczenie:

Les systèmes de communication à intensité optique en espace libre (FSOI) sont largement utilisés dans les communications à courte portée, telles que les communications infrarouges entre des dispositifs électroniques portables. L’émetteur de ces systèmes module sur l’intensité des signaux optiques émis par des diodes électroluminescentes (LEDs) ou des diodes laser (LDs), et le récepteur mesure les intensités optiques entrantes au moyen de photodétecteurs. Les entrées ne sont pas négatives car elles représentent des intensités. En outre, ils sont généralement soumis à des contraintes de puissanc

Style APA, Harvard, Vancouver, ISO itp.

42

Sato, Takeshi, Abbas Sandouk, Takaya Yamazato, Masaaki Katayama, and Akira Ogawa. "System Capacity of an Integrated Voice and Data CDMA Network in Channel Load Sensing Protocol." IEEE, 1997. http://hdl.handle.net/2237/7783.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

43

JEAN-PIERRE, Edler, and 尚必威. "Channel Capacity over Rice Fading Channels." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/49468853152491815537.

Pełny tekst źródła

Streszczenie:

碩士<br>中華技術學院<br>電子工程研究所碩士班<br>94<br>In this thesis, information rates of mobile radio channels are studied (precisely in the second chapter), the channel state information (CSI) being known by neither the transmitter nor the receiver. The channel considered is a time varying Rice fading process in which one of the characteristics is the presence of a Doppler spectrum with specified normalized fading rate. In the last chapter, the concept of combined equalization for uplink multi-carrier code-division multiple access (MC-CDMA) is studied and a theoretical analysis indicates that better single-u

Style APA, Harvard, Vancouver, ISO itp.

44

Perera, Ranjana. "On capacity of fading channels with no channel state information." Phd thesis, 2006. http://hdl.handle.net/1885/10354.

Pełny tekst źródła

Streszczenie:

The rapid development of communication systems with mobile receivers at higher data rates has lead to the importance of studies on information transfer over highly time varying channels. Under such circumstances, the channel variations become fast and the receiver is unable to track the channel during the predefined block length. Here existing results for the channel capacity and the optimal input distribution, under the assumption of knowledge of the channel state information (CSI) are no longer valid. In reality the capacity is significantly reduced in the absence of the CSI at both the tran

Style APA, Harvard, Vancouver, ISO itp.

45

Li, I.-Hsueh, and 李宜學. "Channel Capacity Evaluation for MIMO-OFDM." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/44142752589974267749.

Pełny tekst źródła

Streszczenie:

碩士<br>國立暨南國際大學<br>電機工程學系<br>91<br>In this thesis two multi-path channel models, the indoor IEEE 802.11 channel and the outdoor COST 207, are used to evaluate the channel capacity and performance of MIMO-OFDM systems. According to some statistic characteristics over various channel models, the variations of sub-channel capacity over MIMO-OFDM are observed and analyzed. Computer simulations and illustration demonstrate that the MIMO-OFDM systems can effectively combat frequency-selective fading and meanwhile maintain very high spectrum efficiency. MIMO-WLAN is selected as a study example to illu

Style APA, Harvard, Vancouver, ISO itp.

46

Huang, Wei-Chen, and 黃偉誠. "Under Channel Capacity Constraint - Joint Source/Channel Coding in Video Transmission." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/89618596255742870538.

Pełny tekst źródła

Streszczenie:

碩士<br>國立臺灣海洋大學<br>導航與通訊系<br>93<br>Abstract The objective of this thesis is to investigate the joint source/channel coding algorithm, which provides a uniform video transmission rate to achieve better system performance with limited channel capacity. In the proposed algorithm we provid MPEG2 video coding scheme , and turbo channel coding technique as well as BPSK/QPSK for modulation method. In general, source coding and channel coding have been separately designed in order to achieve the best system performance, but which does not show a better performance while simply connecting the best So

Style APA, Harvard, Vancouver, ISO itp.

47

Li, Chen-Yu, and 李鎮宇. "Channel Capacity Limitation and Joint Source-Channel Coding Applied in Image Transmission." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/00607823055895769797.

Pełny tekst źródła

Streszczenie:

碩士<br>國立臺灣海洋大學<br>通訊與導航工程學系<br>100<br>Since the noise varies with the time variable and affects the communication channel, the signal-to-noise ratio of channel constantly varies while the signal transmits. Consequently, the available channel capacity will change while signal-to-noise ratio varies. The objective of this thesis is to investigate the appropriate combination of source coding and channel coding while the channel capacity changes. Since both code rates are different, there is a variety of image system transmission rate. With so many combinations, the key point is to research how t

Style APA, Harvard, Vancouver, ISO itp.

48

SEN, NEVROZ. "Channel Capacity in the Presence of Feedback and Side Information." Thesis, 2013. http://hdl.handle.net/1974/8112.

Pełny tekst źródła

Streszczenie:

This thesis deals with the Shannon-theoretic fundamental limits of channel coding for single-user channels with memory and feedback and for multi-user channels with side information. We first consider the feedback capacity of a class of symmetric channels with memory modelled as nite-state Markov channels. The symmetry yields the existence of a hidden Markov noise process that facilitates the channel description as a function of input and noise, where the function satisfies a desirable invertibility property. We show that feedback does not increase capacity for such class of finite-state chan

Style APA, Harvard, Vancouver, ISO itp.

49

Khare, Aparna. "Capacity and Coding for 2D Channels." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8774.

Pełny tekst źródła

Streszczenie:

Consider a piece of information printed on paper and scanned in the form of an image. The printer, scanner, and the paper naturally form a communication channel, where the printer is equivalent to the sender, scanner is equivalent to the receiver, and the paper is the medium of communication. The channel created in this way is quite complicated and it maps 2D input patterns to 2D output patterns. Inter-symbol interference is introduced in the channel as a result of printing and scanning. During printing, ink from the neighboring pixels can spread out. The scanning process can introduce interfe

Style APA, Harvard, Vancouver, ISO itp.

50

Chun-Mo, Lee, and 李俊模. "MIMO Capacity Evaluation and Performance in Fading Channel." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/ppbg3x.

Pełny tekst źródła

Streszczenie:

碩士<br>亞東技術學院<br>資訊與通訊工程研究所<br>96<br>In recent year, wireless communication systems are required to provide high data rate service within very limited bandwidth. Therefore, most wireless communication systems lay stress on the enhancement of spectral efficiency. The worldwide interoperability for microwave access（WiMAX）is a newly developed technology system, which aims at providing high data rate service and employs MIMO technique with BPSK, QPSK, 16-QAM, 64-QAM modulations. In this paper, we focus on MIMO capacity analysis and link performance evaluation in Rayleigh fading channel in referenc

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!