Log in

Relevant bibliographies by topics / Channel state information / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Channel state information.

Dissertations / Theses on the topic 'Channel state information'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Channel state information.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Pastore, Adriano. "Communication rates for fading channels with imperfect channel-state information." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/279247.

Full text

Abstract:

The present thesis studies information rates for reliable transmission of information over fading channels in the realistic situation where the receiver has only imperfect channel-state knowledge. Of particular interest are analytical expressions of achievable transmission rates under imperfect and no CSI, that is, lower bounds on the mutual information and on the Shannon capacity. A well-known mutual information lower bound for Gaussian codebooks is obtained when conflating the additive (thermal) noise with the multiplicative noise due to the imperfections of the CSIR into a single effective

APA, Harvard, Vancouver, ISO, and other styles

3

Yang, Jingnong. "Channel State Information in Multiple Antenna Systems." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14120.

Full text

Abstract:

In a MIMO system, a transmitter with perfect knowledge of the underlying channel state information (CSI) can achieve a higher channel capacity compared to transmission without CSI. When reciprocity of the wireless channel does not hold, the identification and utilization of partial CSI at the transmitter are important issues. This thesis is focused on partial CSI acquisition and utilization techniques for MIMO channels. We propose a feedback algorithm for tracking the dominant channel subspaces for MIMO systems in a continuously time-varying environment. We exploit the correlation between ch

APA, Harvard, Vancouver, ISO, and other styles

4

Chen, Luan. "Enhancing indoor location fingerprinting using channel state information." Electronic Thesis or Diss., Paris, CNAM, 2020. http://www.theses.fr/2020CNAM1281.

Full text

Abstract:

Grâce au développement rapide des communications sans fil, la localisation par empreinte digitale (LF) a favorisé des services géodépendants considérables dans le domaine de l’Internet des objets. Dans cette thèse, nous avons d’abord proposé le système EntLoc, qui adopte l’entropie de modélisation autorégressive (AR) de l’amplitude des informations d’état de canal (CSI) comme empreinte digitale de localisation. Il partage la simplicité structurelle de la force du signal reçu (RSS) tout en réservant les informations de canal statistique les plus spécifiques à l’emplacement. De plus, un système

APA, Harvard, Vancouver, ISO, and other styles

5

Huang, Jinliang. "Adaptive MIMO Systems with Channel State Information at Transmitter." Doctoral thesis, KTH, Kommunikationssystem, CoS, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9777.

Full text

Abstract:

This dissertation presents adaptation techniques that can achieve high spectral efficiency for single user multiple-input multiple-output (MIMO) systems. Two types of adaptation techniques, adaptive modulation and adaptive powe allocation, are employed to adapt the rate and the transmit power to fading channels. We start by investigating the adaptive modulation subject to a certain bit-error-ratio (BER) constraint, either instantaneous BER constraint or average BER constraint. The resulting average spectral efficiencies are obtained in closed-form expressions. It turns out that, by employing t

APA, Harvard, Vancouver, ISO, and other styles

6

Ma, Yongsen. "Improving Wifi Sensing And Networking With Channel State Information." W&M ScholarWorks, 2019. https://scholarworks.wm.edu/etd/1593091976.

Full text

Abstract:

In recent years, WiFi has a very rapid growth due to its high throughput, high efficiency, and low costs. Multiple-Input Multiple-Output (MIMO) and Orthogonal Frequency-Division Multiplexing (OFDM) are two key technologies for providing high throughput and efficiency for WiFi systems. MIMO-OFDM provides Channel State Information (CSI) which represents the amplitude attenuation and phase shift of each transmit-receiver antenna pair of each carrier frequency. CSI helps WiFi achieve high throughput to meet the growing demands of wireless data traffic. CSI captures how wireless signals travel thro

APA, Harvard, Vancouver, ISO, and other styles

7

Huang, Jin Liang. "Adaptive MIMO systems with channel state information at transmitter /." Stockholm : KTH Information and Communication Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9777.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Mi, De. "Massive MIMO with imperfect channel state information and practical limitations." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/841236/.

Full text

Abstract:

Multi-user (MU) massive multiple-input-multiple-output (MIMO) is one of the promising technologies for the 5th Generation of wireless communication systems. However, as an emerging technology, various technical challenges that hinder practical use of massive MIMO need to be addressed, e.g., imperfections on channel estimation and channel reciprocity. The overall objective of the proposed research is to investigate some of the key practical challenges of implementation of the massive MIMO system and propose effective solutions for those problems. First, in order to realise promised benefits of

APA, Harvard, Vancouver, ISO, and other styles

9

Miretti, Lorenzo. "Optimal designs for decentralized transmission with asymmetric channel state information." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS142.

Full text

Abstract:

Les performances des réseaux sans fil peuvent être considérablement améliorées en permettant la coopération entre des émetteurs géographiquement distribués. Toutefois, afin de profiter de la coopération entre émetteurs de manière évolutive et avec un bon rapport coût-efficacité, les réseaux de la future génération devraient décentraliser un nombre croissant d'opérations conçues à l'origine pour des systèmes à contrôle centralisé. Du côté de la couche physique, la décentralisation de la transmission ouvre une boîte de Pandore pleine de problèmes de recherche concernant le partage potentiellemen

APA, Harvard, Vancouver, ISO, and other styles

10

Jetlund, Ola. "Adaptive coded modulation : design and simulation with realistic channel state information." Doctoral thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-818.

Full text

Abstract:

<p>Spectrally efficient transmission schemes are becoming a more common requirement for digital communication systems. Especially in wireless communication since the bandwidth of available frequencies is a shared resource. In addition, wireless communication systems suffer from transmission media with varying conditions. Adaptive coded modulation (ACM) has been suggested as a bandwidth-efficient transmission technique in wireless fading environments. The use of ACM is motivated by its ability to improve spectral efficiency (SE) by adapting the transmission rates to the variations in channel si

APA, Harvard, Vancouver, ISO, and other styles

11

Huang, Wei. "Linear transceiver design in MIMO system with imperfect channel state information /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECE%202007%20HUANG.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

He, Wenmin. "Cooperative Channel State Information Dissemination Schemes in Wireless Ad-hoc Networks." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-theses/288.

Full text

Abstract:

This thesis considers a novel problem of obtaining global channel state information (CSI) at every node in an ad-hoc wireless network. A class of protocols for dissemination and estimation are developed which attempt to minimize the staleness of the estimates throughout the network. This thesis also provides an optimal protocol for CSI dissemination in networks with complete graph topology and a near optimal protocol in networks having incomplete graph topology. In networks with complete graph topology, the protocol for CSI dissemination is shown to have a resemblance to finding Eulerian tours

APA, Harvard, Vancouver, ISO, and other styles

13

Yao, Weijie. "Fine-Grained Hand Pose Estimation System based on Channel State Information." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1593211557742674.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Sacristán, Murga Daniel Francisco. "Feedback of channel state information in multi-antenna systems based on quantization of channel Gram matrices." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/124839.

Full text

Abstract:

This dissertation deals with the proper design of efficient feedback strategies for Multiple-Input Multiple-Output (MIMO) communication systems. MIMO systems outperform single antenna systems in terms of achievable throughput and are more resilient to noise and interference, which are becoming the limiting factors in the current and future communications. Apart from the clear performance advantages, MIMO systems introduce an additional complexity factor, since they require knowledge of the propagation channel in order to be able to adapt the transmission to the propagation channel’s characteri

APA, Harvard, Vancouver, ISO, and other styles

15

Pascual, Iserte Antonio. "Channel state Information and joint transmitter-receiver design in multi-antenna systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2005. http://hdl.handle.net/10803/6890.

Full text

Abstract:

Esta tesis aborda el problema del diseño de sistemas multiantena, donde el caso más general corresponde a un canal multi-input-multi-output (MIMO) con un transmisor y un receptor con más de una antena. La ventaja de estos sistemas es que ofrecen un rendimiento mucho mejor que los de una única antena, tanto en términos de calidad en la transmisión como en capacidad entendida como número de usuarios a los que se les puede prestar servicio simultáneamente.<br/><br/>El objetivo es diseñar conjuntamente el transmisor y el receptor, lo que depende directamente de la calidad y la cantidad de informac

APA, Harvard, Vancouver, ISO, and other styles

16

Zheng, Jun. "Design and analysis of MIMO systems with practical channel state information assumptions." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3215292.

Full text

Abstract:

Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed July 24, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 221-228).

APA, Harvard, Vancouver, ISO, and other styles

17

Zhao, Peiyue. "Radio Resource Management Algorithms for D2D Communications With Limited Channel State Information." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177494.

Full text

Abstract:

Network assisted Device-to-Device (D2D) communication has the potential benefits of increasing system capacity, energy efficiency and achievable peak rates while reducing the end-to-end latency. To realize these gains, recent works have proposed power control (PC) and resource allocation (RA) schemes that show near optimal performance in terms of spectral or energy efficiency. Unfortunately, these schemes assume perfect and instantaneous access to either large scale or small scale channel state information (CSI) at some central entity. Obviously, this assumption does not hold in practical impl

APA, Harvard, Vancouver, ISO, and other styles

18

Zhang, Xi. "Transceiver Design for Multiple Antenna Communication Systems with Imperfect Channel State Information." Doctoral thesis, Stockholm : Elektrotekniska system, Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4679.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Zhao, Bo [Verfasser]. "Limited Feedback of Channel State Information in Wireless Communication Systems / Bo Zhao." Düren : Shaker, 2021. http://d-nb.info/1240853483/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Muralidhar, Aditya. "Multiple-Input Multiple Output System on a Spinning Vehicle with Unknown Channel State Information." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581828.

Full text

Abstract:

This paper presents the investigations into the performance of a multiple-input multiple-output (MIMO) system with its transmitters on a spinning vehicle and no available channel state information (CSI) at the transmitter or the receiver. The linear least squares approach is used to estimate the channel and the estimation error is measured. Spinning gives rise to a periodic component in the channel which can be estimated based on the spin rate relative to the data rate of the system. It is also determined that spinning causes the bit error rate of the system to degrade by a few dB.

APA, Harvard, Vancouver, ISO, and other styles

21

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 text

APA, Harvard, Vancouver, ISO, and other styles

22

Liu, Moyu. "HUMAN BIOMETRIC SIGNALS MONITORING BASED ON WIFI CHANNEL STATE INFORMATION USING DEEP LEARNING." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/27463.

Full text

Abstract:

As civilisation has progressed, the public’s attention to health monitoring has increased. Health monitoring equipment has become ubiquitous. Most of the health monitoring instruments mainly detect human biometric signals, such as heart rate and respiratory rate. These indicators can reflect human primary health conditions, both mental and physical and classify sleep stages. The classification of sleep stages, as well as the monitoring of breathing rate and heart rate, can aid in the evaluation of health and the diagnosis of disorders by doctors. Some health problems, such as depression, insom

APA, Harvard, Vancouver, ISO, and other styles

23

Sharma, Maneesha. "Effective channel state information (CSI) feedback for MIMO systems in wireless broadband communications." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/71549/2/Maneesha_Sharma_Thesis.pdf.

Full text

Abstract:

This research has analysed both reciprocity and feedback mechanisms in multi-antenna wireless systems. It has presented the basis of an effective CSI feedback mechanism that efficiently provides the transmitter with the minimum information to allow the accurate knowledge of a rapidly changing channel. The simulations have been conducted using MATLAB to measure the improvement when the channel is estimated at the receiver in a 2 X 2 multi-antenna system and compared to the case of perfect channel knowledge at the receiver.

APA, Harvard, Vancouver, ISO, and other styles

24

Ding, 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 text

APA, Harvard, Vancouver, ISO, and other styles

25

Payaró, Llisterri Miquel. "IMPACT OF CHANNEL STATE INFORMATION ON THE ANALYSIS AND DESIGN OF MULTIANTENNA COMMUNICATION SYSTEMS." Doctoral thesis, Universitat Politècnica de Catalunya, 2007. http://hdl.handle.net/10803/6900.

Full text

Abstract:

Al llarg d'aquesta última dècada, s'ha produit un creixement constant en la demanda d'elevades taxes de transmissió de dades que han de suportar les aplicacions sobre comunicacions sense fils. Entre les diferents solucions ideades per la comunitat recercaire per tal de fer front a aquesta nova demanda, la utilització de múltiples antenes s'erigeix com una de les millors candidates degut al fet que proporciona simultàniament una millora en les taxes de transmissió i en la fiabilitat en la recepció de les dades. L'ús d'antenes múltiples en un dels extrems de la comunicació data de la dècada dels

APA, Harvard, Vancouver, ISO, and other styles

26

Buzuverov, Alexey [Verfasser], Anja [Akademischer Betreuer] Klein, and Bruno [Akademischer Betreuer] Clerckx. "Multi-User Networks with Outdated Channel State Information / Alexey Buzuverov ; Anja Klein, Bruno Clerckx." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1183911513/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Engelmann, Sabrina. "Beamforming and Protection Strategies in Gaussian MISO Wiretap Systems with Partial Channel State Information." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-172869.

Full text

Abstract:

Within this thesis, we investigate the possibilities of physical layer secrecy for two special system models. In detail, we study beamforming and protection strategies in the Multiple-Input Single-Output (MISO) Gaussian Wiretap Channel (WTC) and the Gaussian two-hop relay WTC with multiple antennas at transmitter and receiver. In both system models, we examine the influence of partial Channel State Information (CSI) on the link to the eavesdropper and compare the achievable secrecy rates with the case of full CSI. We show for the MISO WTC that in the fast fading scenario the Beamforming Vector

APA, Harvard, Vancouver, ISO, and other styles

28

Tran, Tuyen X. "Achievable Rate and Capacity of Amplify-and-Forward Multi-Relay Networks with Channel State Information." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1376743091.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Zhao, Bo [Verfasser], and Andreas [Akademischer Betreuer] Czylwik. "Limited Feedback of Channel State Information in Wireless Communication Systems / Bo Zhao ; Betreuer: Andreas Czylwik." Duisburg, 2021. http://d-nb.info/1239048777/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Cooper, Reginald Larenzo. "Sensing and Learning Channel State Information in a Dynamic Wireless Environment with Cognitive Radios and Networks." Research Showcase @ CMU, 2012. http://repository.cmu.edu/dissertations/211.

Full text

Abstract:

Sensing and learning channel state information 􁈺CSI􁈻 in a dynamic wireless environment 􁈺DWE􁈻 has not been a focus of the cognitive radio and network research. The focus has been on obtaining spectral resource information about the spectrum availability 􁈺i.e. spectrum sensing for dynamic spectrum access􁈻 or how to adapt radios and networks in a way that improves the effectiveness of the radio networks, for example rate adaptation. In most of these cases it is assume that the CSI is already known or it is obtained from a method that directly measures the spectrum of interest through channel esti

APA, Harvard, Vancouver, ISO, and other styles

31

Yu, Zehao. "Towards location-awareness in next generation wireless networks : a new approach based on channel state information." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127117.

Full text

Abstract:

Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 69-78).<br>Location-awareness in next generation wireless networks will be a key enabler for numerous emerging applications. Recently, a novel approach to localization based on soft information (SI), exploiting all positional information inherent in measurement and contextual data, has been proposed. This thesis further develops SI-based localization by establishing a new approach relying on channe

APA, Harvard, Vancouver, ISO, and other styles

32

Rey, Micolau Francesc. "Feedback-Channel and adaptative mimo coded-modulations." Doctoral thesis, Universitat Politècnica de Catalunya, 2006. http://hdl.handle.net/10803/6899.

Full text

Abstract:

En els sistemes de comunicacions on el transmissor disposa de certa informació sobre l'estat del canal (CSI), es possible dissenyar esquemes lineals de precodificació que assignin la potència de manera òptima induint guanys considerables, sigui en termes de capacitat, sigui en termes de la fiabilitat de l'enllaç de comunicacions. A la pràctica, aquest coneixement del canal mai és perfecte i, per tant, el senyal transmès es veurà degradat degut al desajust entre la informació que el transmissor disposi del canal i el seu estat real.<br/><br/>En aquest context, aquesta tesi estudia dos probleme

APA, Harvard, Vancouver, ISO, and other styles

33

Duong, Duc Van. "Analysis and optimization of pilot-aided adaptive coded modulation under noisy channel state information and antenna diversity." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-987.

Full text

Abstract:

<p>The thesis is largely built on a collection of published and submitted papers where the main focus is to analyze and optimize single-carrier adaptive coded modulation systems with and without antenna diversity. Multidimensional trellis codes are used as component codes. The majority of the analysis is done with both estimation and prediction errors being incorporated. Both channel estimation and prediction are performed using a pilot-symbol-assisted modulation scheme. Thus, known pilot symbols (overhead information) must be transmitted; which consumes power and also degrades system spectral

APA, Harvard, Vancouver, ISO, and other styles

34

Chiang, Hsiao-Lan [Verfasser], Gerhard [Gutachter] Fettweis, and Volker [Gutachter] Kühn. "Millimeter-Wave Hybrid Beamforming Based on Implicit Channel State Information / Hsiao-Lan Chiang ; Gutachter: Gerhard Fettweis, Volker Kühn." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1230578064/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Xie, Yongzhe. "On adaptive transmission, signal detection and channel estimation for multiple antenna systems." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/1058.

Full text

Abstract:

This research concerns analysis of system capacity, development of adaptive transmission schemes with known channel state information at the transmitter (CSIT) and design of new signal detection and channel estimation schemes with low complexity in some multiple antenna systems. We first analyze the sum-rate capacity of the downlink of a cellular system with multiple transmit antennas and multiple receive antennas assuming perfect CSIT. We evaluate the ergodic sum-rate capacity and show how the sum-rate capacity increases as the number of users and the number of receive antennas increases. We

APA, Harvard, Vancouver, ISO, and other styles

36

Giese, Jochen. "Constellation Design under Channel Uncertainty." Doctoral thesis, KTH, School of Electrical Engineering (EES), 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-454.

Full text

Abstract:

<p>The topic of this thesis is signaling design for data transmission through wireless channels between a transmitter and a receiver that can both be equipped with one or more antennas. In particular, the focus is on channels where the propagation coefficients between each transmitter--receiver antenna pair are only partially known or completetly unknown to the receiver and unknown to the transmitter.</p><p>A standard signal design approach for this scenario is based on separate training for the acquisition of channel knowledge at the receiver and subsequent error-control coding for data detec

APA, Harvard, Vancouver, ISO, and other styles

37

Juntti, J. (Juhani). "Performance analysis of suboptimal soft decision DS/BPSK receivers in pulsed noise and CW jamming utilizing jammer state information." Doctoral thesis, University of Oulu, 2004. http://urn.fi/urn:isbn:9514273869.

Full text

Abstract:

Abstract The problem of receiving direct sequence (DS) spread spectrum, binary phase shift keyed (BPSK) information in pulsed noise and continuous wave (CW) jamming is studied in additive white noise. An automatic gain control is not modelled. The general system theory of receiver analysis is first presented and previous literature is reviewed. The study treats the problem of decision making after matched filter or integrate and dump demodulation. The decision methods have a great effect on system performance with pulsed jamming. The following receivers are compared: hard, soft, quantized soft

APA, Harvard, Vancouver, ISO, and other styles

38

Ngo, Minh Hanh. "Cross-layer adaptive transmission scheduling in wireless networks." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/432.

Full text

Abstract:

A new promising approach for wireless network optimization is from a cross-layer perspective. This thesis focuses on exploiting channel state information (CSI) from the physical layer for optimal transmission scheduling at the medium access control (MAC) layer. The first part of the thesis considers exploiting CSI via a distributed channel-aware MAC protocol. The MAC protocol is analysed using a centralized design approach and a non-cooperative game theoretic approach. Structural results are obtained and provably convergent stochastic approximation algorithms that can estimate the optimal tran

APA, Harvard, Vancouver, ISO, and other styles

39

Chari, Shreya Krishnama. "Link blockage modelling for channel state prediction in high-frequencies using deep learning." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287458.

Full text

Abstract:

With the accessibility to generous spectrum and development of high gain antenna arrays, wireless communication in higher frequency bands providing multi-gigabit short range wireless access has become a reality. The directional antennas have proven to reduce losses due to interfering signals but are still exposed to blockage events. These events impede the overall user connectivity and throughput. A mobile blocker such as a moving vehicle amplifies the blockage effect. Modelling the blockage effects helps in understanding these events in depth and in maintaining the user connectivity. This the

APA, Harvard, Vancouver, ISO, and other styles

40

Bothenna, Hasitha Imantha. "Approximation of Information Rates in Non-Coherent MISO wireless channels with finite input signals." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1516369758012866.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Zhang, Lili. "Interference Channel with State Information." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11427.

Full text

Abstract:

In this dissertation, we study the state-dependent two-user interference channel, where the state information is non-causally known at both transmitters but unknown to either of the receivers. We first propose two coding schemes for the discrete memoryless case: simultaneous encoding for the sub-messages in the first one and super-position encoding in the second one, both with rate splitting and Gel'fand-Pinsker coding. The corresponding achievable rate regions are established. Moreover, for the Gaussian case, we focus on the simultaneous encoding scheme and propose an active interference can

APA, Harvard, Vancouver, ISO, and other styles

42

Aubry, Augusto. "MIMO Multiple Access Channels with Partial Channel State Information." Tesi di dottorato, 2010. http://www.fedoa.unina.it/8135/1/Aubry_Augusto_23.pdf.

Full text

Abstract:

The increasing demand for wireless communication systems has been the starting point for many research activities and discussions about the best way to make a cleaver usage of the available spectrum and the available power, in order to satisfy the requirements of the users. In these systems there are several issues which have to be taken in to account for the evaluation of their Shannon-Capacity, i.e. the maximum amount of information that can be reliably delivered: the mobility of the users, the presence of time varying obstacles, power and bandwidth limitations. A lot of efforts have be

APA, Harvard, Vancouver, ISO, and other styles

43

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

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

44

Huang, Kaibin. "MIMO networking with imperfect channel state information." Thesis, 2008. http://hdl.handle.net/2152/4007.

Full text

Abstract:

The shortage of radio spectrum has become the bottleneck of achieving broadband wire-less access. Overcoming this bottleneck in next-generation wireless networks hinges on successful implementation of multiple-input-multiple-output (MIMO) technologies, which use antenna arrays rather than additional bandwidth for multiplying data rates. The most efficient MIMO techniques require channel state information (CSI). In practice, such information is usually inaccurate due to overhead constraints on CSI acquisition as well as mobility and delay. CSI inaccuracy can potentially reduce the performance g

APA, Harvard, Vancouver, ISO, and other styles

45

CHEN, LI-YONG, and 陳力永. "Compressing Channel State Feedback Information Using Autoencoder." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/996z7t.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>電子工程系<br>107<br>Channel State Information (CSI) refers to the property of the wireless communication link. CSI can be used to know the effect of the overall fading procedure of the signal from the transmitter to the receiver. In the traditional wireless communication, CSI obtained by the channel estimation is used to restore the distortion of the signal amplitude and phase caused by the channel fading. Nowadays, the application of CSI is becoming more and more diverse, such as: communication scenario identification, user behavior identification, adaptive transmission, channel

APA, Harvard, Vancouver, ISO, and other styles

46

Khoshnevis, Behrouz. "Multiple-antenna Communications with Limited Channel State Information." Thesis, 2011. http://hdl.handle.net/1807/30036.

Full text

Abstract:

Due to its significant advantage in spectral efficiency, multiple-antenna communication technology will undoubtedly be a major component in future wireless system implementations. However, the full exploitation of this technology also requires perfect feedback of channel state information (CSI) to the transmitter-- something that is not practically feasible. This motivates the study of limited feedback systems, where CSI feedback is rate limited. This thesis focuses on the optimal design of limited feedback systems for three types of communication channels: the relay channel, the single-user p

APA, Harvard, Vancouver, ISO, and other styles

47

Yazdan, Panah Ali. "Relay-aided communications with partial channel state information." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-08-4264.

Full text

Abstract:

Modern wireless communication systems strive to enable communications at high data rates, over wide geographical areas, and to multiple users. Unfortunately, this can be a daunting task in practice, as natural laws governing the wireless medium may hinder point-to-point transmissions. Communications over large distances (path loss), and physical obstructions in line-of-sight signals (shadowing) are prime examples of such impediments. One promising solution is to deploy intermediary terminals to help reestablish such broken point-to-point communication links. Such terminals are called relay nod

APA, Harvard, Vancouver, ISO, and other styles

48

Buzuverov, Alexey. "Multi-User Networks with Outdated Channel State Information." Phd thesis, 2019. http://tuprints.ulb.tu-darmstadt.de/8571/1/2019_01_21_Buzuverov_Alexey.pdf.

Full text

Abstract:

The spread of ubiquitous high-speed mobile communication has changed our daily life and society significantly. Using multiple antennas at transmitters and receivers, known as multiple-input and multiple-output (MIMO) technology, is one of the key developments which allowed new advances in mobile communication. Accurate and up-to-date channel state information at the transmitter (CSIT) is a necessary requirement for achieving the multiplexing gains, referred to in the literature also as degrees of freedom (DoF). Maintaining up-to-date CSIT however may become exhausting in terms of the number of

APA, Harvard, Vancouver, ISO, and other styles

49

Li-YuanChen and 陳立遠. "Channel State Information (CSI) Reductionfor Cooperative OFDM Systems." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/z43kje.

Full text

Abstract:

碩士<br>國立成功大學<br>電腦與通信工程研究所<br>104<br>In recent years, cooperative communications have received much attention. The concept of cooperative communications is to let un-used mobile units help the transmission of other users. Through the neighbor nodes, the transmitted signal can be relayed to the destination. Cooperative communications can reinforce the point-to-point transmission channel. Based on the cooperative communications, we attain a scenario that is like there are several transmit antennas at the transmitter, and this achieves the effect of multiple-input multiple-output (MIMO) system. I

APA, Harvard, Vancouver, ISO, and other styles

50

Liu, Chi-Tang, and 劉啟堂. "Exploiting Decentralized Channel State Information for Slotted ALOHA." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/56388979156402692810.

Full text

Abstract:

碩士<br>國立臺灣大學<br>電信工程學研究所<br>99<br>Conventional Slotted ALOHA is a random access protocol designed for collision channels. In this thesis, we consider a cross layer design that exploits decentralized channel state information (D-CSI) for the Medium Access Control (MAC) layer protocol such as slotted ALOHA under the SINR capture model. In view of the inferior performance of the threshold based transmission, we first propose a single-region based channel aware ALOHA strategy that can reduce the multiple access interference (MAI). The system throughput is analyzed and optimized for a wireless netw

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!