Bibliografie tematiche / Multi-rate / Tesi
Segui questo link per vedere altri tipi di pubblicazioni sul tema: Multi-rate.

Tesi sul tema "Multi-rate"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 25 luglio 2025

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Vedi i top-50 saggi (tesi di laurea o di dottorato) per l'attività di ricerca sul tema "Multi-rate".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Vedi le tesi di molte aree scientifiche e compila una bibliografia corretta.

1

ALVES, ROGERIO GUEDES. "EFFICIENT MULTI-RATE SYSTEM IMPLEMENTATION FORMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1993. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8692@1.

Testo completo
Abstract (sommario):
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Inicialmente apresenta-se a estrutura de um sistema Multi- taxa, faz-se uma revisão teórica do mesmo, e descreve-se seu funcionamento. Posteriormente são apresentadas várias formas de implementar este sistema, como realizá-lo no domínio do tempo, parte no domínio do tempo e parte no domínio da freqüência e realizá-lo no domínio da freqüência. Nestas formas de implementação são considerados fatores como: emprego da técnica de overlap- save ou overlap-add para realização da convolução a ser implementada no sistema, e utiliz
Gli stili APA, Harvard, Vancouver, ISO e altri
2

Solanes, Galbis Juan Ernesto. "MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/57951.

Testo completo
Abstract (sommario):
[EN] This thesis deals with two characteristic problems in visual feedback robot control: 1) sensor latency; 2) providing suitable trajectories for the robot and for the measurement in the image. All the approaches presented in this work are analyzed and implemented on a 6 DOF industrial robot manipulator or/and a wheeled robot. Focusing on the sensor latency problem, this thesis proposes the use of dual-rate high order holds within the control loop of robots. In this sense, the main contributions are: - Dual-rate high order holds based on primitive functions for robot control (Chapter 3): an
Gli stili APA, Harvard, Vancouver, ISO e altri
3

Khan, Shahbaz. "Design of rate-adaptive MAC and medium aware routing protocols for multi-rate, multi-hop wireless networks." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/4156.

Testo completo
Abstract (sommario):
The IEEE 802.11 standard conformant wireless communication stations have multi-rate transmission capability. To achieve greater communication efficiency, multi-rate capable stations use rateadaptation to select appropriate transmission rate according to variations in the channel quality. The thesis presents two rate-adaptation schemes, each belonging to one of the two classes of rateadaptation schemes i.e.(1) the frame-transmission statistics based schemes, and (2) Signal-to-Noise Ratio (SNR) based, closed loop schemes. The SNR-based rate-adaptation scheme, proposed in this thesis uses a novel
Gli stili APA, Harvard, Vancouver, ISO e altri
4

Yamazato, Takaya, Satoshi Makido, Masaaki Katayama, and Akira Ogawa. "Hierarchical Transmission System using Multi-code/Multi-rate DS/SS Modulation." IEEE, 1998. http://hdl.handle.net/2237/7787.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Ahmed, Walid K. M., and Harald Wougk. "DESIGN AND PERFORMANCE OF A MULTI-MODE MULTI-RATE TELEMETRY TRANSMITTER." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604584.

Testo completo
Abstract (sommario):
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>Typical telemetry transmitter designs have focused on analog-circuit implementations, which suffer limitations when required to support multi-mode and multi-rate capabilities. In this paper, we introduce a transmitter design (and associated techniques) that employ an all-digital baseband line-up that utilizes only one single-rate clock. Thus, keeping the analog hardware to a minimum and pro
Gli stili APA, Harvard, Vancouver, ISO e altri
6

Wang, Junfang. "Efficient Positioning Technique for Multi-Interface Multi-Rate Wireless Mesh Networks." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1289937715.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Azad, Hedayat. "Multi-service, multi-rate and multi-environment hybrid spread spectrum CDMA for mobile communications." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271427.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
8

Vocke, Carsten. "Hedging with multi-factor interest rate models /." [St. Gallen] : [s.n.], 2005. http://www.gbv.de/dms/zbw/503121223.pdf.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
9

Rourke, Anthony. "The dynamics of multi-mode vibratory rate sensors." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269689.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
10

Reed, Eric Christopher. "Multi-dimensional bit rate control for video communication." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86669.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
11

Sadeghi, Rasool. "Cooperative communications in multi-rate IEEE 802.11 networks." Doctoral thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/10662.

Testo completo
Abstract (sommario):
Doutoramento em Telecomunicações<br>Esta tese apresenta um estudo sobre alguns dos protocolos de cooperação MAC para redes sem fios utilizando o sistema IEEE 802.11 multi-débito. É proposto um novo modelo de arquitetura para a categorização e análise da cooperação em redes sem fios, tendo este modelo sido aplicado a protocolos cooperativos existentes para camada MAC. É investigado como as características do meio físico, assim como os requisitos de níveis superiores podem ser aplicados ao processo de cooperação, com vista a melhorar as características de funcionamento da rede de comunicações.
Gli stili APA, Harvard, Vancouver, ISO e altri
12

Liu, Jiangchuan. "On bandwidth adaptation for multi-rate video multicast /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?COMP%202003%20LIU.

Testo completo
Abstract (sommario):
Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 132-137). Also available in electronic version. Access restricted to campus users.
Gli stili APA, Harvard, Vancouver, ISO e altri
13

Palermo, William J. "Angular rate estimation for multi-body spacecraft attitude control." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA392077.

Testo completo
Abstract (sommario):
Thesis (M.S. in Astronautical Engineering and Aeronautical and Astronautical Engineer) Naval Postgraduate School, June 2001.<br>Thesis advisor(s): Agrawal, Brij N. "June 2001." Includes bibliographical references (p. 109-110). Also available in print.
Gli stili APA, Harvard, Vancouver, ISO e altri
14

Arisoylu, Mustafa. "Fair rate assignment in interference limited multi-hop networks." 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?p3237559.

Testo completo
Abstract (sommario):
Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed December 13, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 85-88).
Gli stili APA, Harvard, Vancouver, ISO e altri
15

Yu, Yong. "Time domain equalizer design based on multi-rate technique." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6310.

Testo completo
Abstract (sommario):
Discrete Multitone is adopted in Digital Subscriber Line to offer high-speed data communication on the UTP channel. To combat the channel distortion, DMT system employed Time Domain Equalizer and Cyclic Prefix. In this thesis, we analyze different existing time domain equalizer design methods and their performances are compared based on our simulation results. Modification of the current method is proposed and significant performance improvement is obtained. Multi-rate equalization is studied theoretically, which enables us to achieve zero ISI channels that can be used not only in DMT system b
Gli stili APA, Harvard, Vancouver, ISO e altri
16

Pong, Dennis Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Quality of service support in multi-rate wireless networks." Awarded by:University of New South Wales. School of Electrical Engineering and Telecommunications, 2006. http://handle.unsw.edu.au/1959.4/25153.

Testo completo
Abstract (sommario):
Packet switched wireless networks have become increasingly popular due to improvements in transmission speed, ease of deployment and mobility. Wireless technologies such as the IEEE 802.11 Wireless Local Area Networks provide transmission speeds capable of supporting multimedia applications. However, wireless channels suffer from short term effects such as interference and fading, and long term effects such as signal strength changes that are caused by user mobility. In multi-rate networks, stations can adapt to the channel variations by adjusting their physical transmission rates. This introd
Gli stili APA, Harvard, Vancouver, ISO e altri
17

Luo, Tao. "Interference suppression techniques for multi-rate CDMA communication systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ58958.pdf.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
18

Elliott, Robin N. R. "Modal Identification of Multi-Axis Vibrating Mems Rate Sensors." Thesis, University of Nottingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517765.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
19

Eley, Rebecka. "The dynamics of a multi-axis, vibratory rate gyroscope." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342524.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
20

Dhillon, Harpreet Singh. "Optimal Sum-Rate of Multi-Band MIMO Interference Channel." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/34766.

Testo completo
Abstract (sommario):
While the channel capacity of an isolated noise-limited wireless link is well-understood, the same is not true for the interference-limited wireless links that coexist in the same area and occupy the same frequency band(s). The performance of these wireless systems is coupled to each other due to the mutual interference. One such wireless scenario is modeled as a network of simultaneously communicating node pairs and is generally referred to as an interference channel (IC). The problem of characterizing the capacity of an IC is one of the most interesting and long-standing open problems in inf
Gli stili APA, Harvard, Vancouver, ISO e altri
21

美霖, 何., and Meilin He. "Multi-rate coding schemes for gaussian multiple access channel." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13071670/?lang=0, 2018. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13071670/?lang=0.

Testo completo
Abstract (sommario):
本研究で提案するマルチレート符号化法は、各ユーザが同じ通信路符号器を持つものの、符号器のパラメータ(Repeat Accumulate符号の繰り返し回数)と符号器に直列に連接する拡散列の長さを変化させることで、異なるレートの情報伝送を実現する、という方法である。通信路にガウス雑音が加算される場合、任意に低い誤り率の高信頼通信を可能にし、合計伝送レートを最大にする最適な通信路符号のパラメータと拡散長を理論解析で求める。<br>In this dissertation, the same encoder is employed for each user, and different rate transmissions is realized by adjusting the parameter of the encoder. We analyze the decoding performances of our coding schemes, and obtain the optimal coding parameters, which gives the maximum sum rates and approach the theoretical limits of the channel. The proposed coding schemes support multimed
Gli stili APA, Harvard, Vancouver, ISO e altri
22

Cui, Songye, and Songye Cui. "Multi-criteria optimization algorithms for high dose rate brachytherapy." Doctoral thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37180.

Testo completo
Abstract (sommario):
L’objectif général de cette thèse est d’utiliser les connaissances en physique de la radiation, en programmation informatique et en équipement informatique à la haute pointe de la technologie pour améliorer les traitements du cancer. En particulier, l’élaboration d’un plan de traitement en radiothérapie peut être complexe et dépendant de l’utilisateur. Cette thèse a pour objectif de simplifier la planification de traitement actuelle en curiethérapie de la prostate à haut débit de dose (HDR). Ce projet a débuté à partir d’un algorithme de planification inverse largement utilisé, la planificatio
Gli stili APA, Harvard, Vancouver, ISO e altri
23

Shen, Tianning. "EXPERIMENTAL STUDY OF MULTIRATE MARGIN IN SOFTWARE DEFINED MULTIRATE RADIO." Cleveland State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=csu1263695252.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
24

Springer, Jan P. [Verfasser], and Bernd [Akademischer Betreuer] Fröhlich. "Multi-Frame Rate Rendering / Jan P. Springer ; Betreuer: Bernd Fröhlich." Weimar : Professur Systeme der Virtuellen Realität, 2008. http://d-nb.info/111572777X/34.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
25

Mugg, Patrick R. "Construction and Analysis of Multi-Rate Partitioned Runge-Kutta Methods." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/7390.

Testo completo
Abstract (sommario):
Adaptive mesh refinement (AMR) of hyperbolic systems allows us to refine the spatial grid of an initial value problem (IVP), in order to obtain better accuracy and improved efficiency of the numerical method being used. However, the solutions obtained are still limited to the local Courant-Friedrichs-Lewy (CFL) time-step restrictions of the smallest element within the spatial domain. Therefore, we look to construct a multi-rate time-integration scheme capable of solving an IVP within each spatial sub-domain that is congruent with that sub-domains respective time-step size. The primary objectiv
Gli stili APA, Harvard, Vancouver, ISO e altri
26

Du, D. (Dongyang). "Performance of multi-rate equalizer with lte standard turbo code." Master's thesis, University of Oulu, 2014. http://urn.fi/URN:NBN:fi:oulu-201405291605.

Testo completo
Abstract (sommario):
In the uplink channel of the 3GPP long term evolution (LTE) and LTE-Advanced (LTE-A) systems, signal carrier frequency-division multiplexing access (SC-FDMA) transmission scheme is employed instead of orthogonal frequency-division multiplexing (OFDM) to reduce the peak-to-average power ratio (PAPR). However, compared to OFDM, SC-FDMA has lower channel throughput, since it suffers from inter-symbol interference (ISI). Multi-rate equalizer (MRE) is a novel low complexity and non-linear equalizer which can increase the channel throughput. The basic idea of the MRE is that it first decomposes the
Gli stili APA, Harvard, Vancouver, ISO e altri
27

Mayhew, David McNeil. "Multi-rate Sensor Fusion for GPS Navigation Using Kalman Filtering." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/33808.

Testo completo
Abstract (sommario):
With the advent of the Global Position System (GPS), we now have the ability to determine absolute position anywhere on the globe. Although GPS systems work well in open environments with no overhead obstructions, they are subject to large unavoidable errors when the reception from some of the satellites is blocked. This occurs frequently in urban environments, such as downtown New York City. GPS systems require at least four satellites visible to maintain a good position â fixâ . Tall buildings and tunnels often block several, if not all, of the satellites. Additionally, due to Selective Av
Gli stili APA, Harvard, Vancouver, ISO e altri
28

Çetin, Özgür. "Multi-rate modeling, model inference, and estimation for statistical classifiers /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/5849.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
29

Rytty, M. (Miikka). "Affine multi-factor short-rate models in term structure modeling." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201906052430.

Testo completo
Abstract (sommario):
Abstract. This thesis gives an overview of short-rate models in term structure modeling of interest rates. The focus is in simple preference-free models with affine term structures. The thesis also shows how these models can be extended to cover credit spreads over the risk-free interest rate. The empirical section analyzes how well these models can be applied to recent interest rate data. While short-rate models are still used, more recent market models have eclipsed them in pricing of complex derivatives. The previous literature in short-rate modeling has been mainly conducted before the fin
Gli stili APA, Harvard, Vancouver, ISO e altri
30

Takeo, Kohji, Shinichi Sato, and Akira Ogawa. "Multi-rate Traffic Accommodation Using Multicode Transmission in CDMA Cellular Systems." IEEE, 2000. http://hdl.handle.net/2237/7751.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
31

Murase, Takeo. "Interest Rate Risk – Using Benchmark Shifts in a Multi Hierarchy Paradigm." Thesis, KTH, Matematisk statistik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129293.

Testo completo
Abstract (sommario):
This master thesis investigates the generic benchmark approach to measuring interest rate risk. First the background and market situation is described followed by an outline of the concept and meaning of measuring interest rate risk with generic benchmarks. Finally a single yield curve in an arbitrary currency is analyzed in the cases where linear interpolation and cubic interpolation technique is utilized. It is shown that in the single yield curve setting with linear interpolation or cubic interpolation the problem of finding interest rate scenarios can be formulated as convex optimization p
Gli stili APA, Harvard, Vancouver, ISO e altri
32

Comeau, A. Raymond (André Raymond). "Higher order discrete-time models with applications to multi-rate control." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34709.

Testo completo
Abstract (sommario):
This thesis examines the fundamental relationship between a continuous-time system and its discrete-time models. This involves a study of the conditions that the state space realization of a model must satisfy in order to be valid. While such a study has been performed for models whose order equals that of the continuous-time system, this thesis also includes "higher order discrete-time models", that is, models whose order is higher than the continuous-time system. A strict mathematical definition for models is presented based upon the convergence in a certain sense of the time responses of th
Gli stili APA, Harvard, Vancouver, ISO e altri
33

Vincent, John M. "Low bit-rate coding of images using multi-resolution feature extraction." Thesis, University of Essex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236317.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
34

Benko, John L. (John Laszlo) 1976. "Power allocation of multi-rate transmissions over a jammed broadcast channel." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80223.

Testo completo
Abstract (sommario):
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (leaf 40).<br>by John L. Benko.<br>S.B.and M.Eng.
Gli stili APA, Harvard, Vancouver, ISO e altri
35

VAITEKUNAS, JEFFREY J. "ULTRASONIC SURGICAL INSTRUMENTS: A MULTI-VARIATE STUDY FOR CUTTING-RATE EFFECTS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1052935131.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
36

Yu, David Daxiao. "Efficient rate and power allocation in wireline multi-user OFDM systems /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
37

Makido, Satoshi, Takaya Yamazato, Masaaki Katayama, and Akira Ogawa. "Hierarchical Transmission of Huffman Code Using Multi-Code/Multi-Rate DS/SS Modulation with Appropriate Power Control." IEICE, 1998. http://hdl.handle.net/2237/7208.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
38

Huang, Chyi-Sheng, and 黃齊聖. "Multi-rate PWM with Deadtime Compensation." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/49198195526323666347.

Testo completo
Abstract (sommario):
碩士<br>元智大學<br>電機工程學系<br>104<br>A multi-rate filtered PWM (MRFPWM) is proposed to improve both baseband harmonics distortion and the switching loss of the voltage source inverters (VSIs). In the conventional SVPWM, it is a tradeoff to select between a lower harmonics distortion or a lower switching loss. In the proposed scheme, the dependency of harmonics distortion and switching loss is alleviated by separating the modulator into two blocks with different operating frequencies -- optimal filter block that operates at calculative frequency and switching generation block that switches at carrier
Gli stili APA, Harvard, Vancouver, ISO e altri
39

Tsai, Cheng-Ting, and 蔡承庭. "Current controller with multi-rate PWM." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/zu2tsm.

Testo completo
Abstract (sommario):
碩士<br>元智大學<br>電機工程學系<br>106<br>A multi-rate filtered PWM(MRFPWM) is proposed in this thesis to improve the harmonics distortion and the switching loss of the voltage source inverters(VSIs). In the traditional CBPWM, although we can reduce the harmonics distortion by increasing the switching frequency, such a method also leads to more switching loss. Therefore, we develop the MRFPWM, which can reduce the harmonics distortion by increasing the calculative frequency rather than switching frequency, to reduce the current harmonics distortion. Pratically the current signal is used to control the pu
Gli stili APA, Harvard, Vancouver, ISO e altri
40

Po-Wei, Fu. "Wireless Broadband Multi-Data-Rate Communications over Multi-Carrier CDMA." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2407200614140400.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
41

Huang, Yu-Cheng, and 黃裕程. "Multi-rate Multi-path DS-CDMA System with PIC Scheme." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/14460682616331307835.

Testo completo
Abstract (sommario):
碩士<br>國立清華大學<br>動力機械工程學系<br>96<br>第三代蜂巢式行動通訊系統要能支援許多服務，如語音、資料及影像傳輸。換句話說，用戶會以多種傳輸速率來傳輸訊號。在這份論文中，我們選擇以直接序列(direct sequence)展頻技術調變之分碼多工存取系統，來設計一個多速率的通訊系統。我們使用MC及MPG技術來實踐多速率傳輸。在MC系統中，高傳輸速率使用者會使用多個展頻碼(spreading sequence)。在MPG系統中，所有訊號都被調變成相同的頻寬，但高速率使用者的展頻增益(processing gain)及符號區間(symbol duration)會小於低速率的使用者，如此高速率使用者才能在固定時間內傳輸較多的符號。 分碼多工系統中之主要缺點之一為多重存取干擾（MAI）。這是由於在此系統中，多位使用者同時在相同的頻帶上傳送訊息所造成。另一個形成干擾的原因則為多路徑干擾。此兩原因降低了系統的效能，為了要抑制干擾，數種多用戶偵測器曾被提出，其中包括了平行干擾消除偵測器（PIC）。平行干擾消除偵測器的結構是由多個傳統的匹配濾波器（matched filter）一層層組成，藉由層級上的疊代而改善傳統匹配濾波器的效能。在此論文裡，我們提出與干擾投影法相互結合之平行干擾消除偵測器。藉由應用干擾投影法於平行干擾消除偵測器中，我們可以估測出每個使用者的傳輸振幅，並能預期分
Gli stili APA, Harvard, Vancouver, ISO e altri
42

Fu, Po-Wei, and 傅柏偉. "Wireless Broadband Multi-Data-Rate Communications over Multi-Carrier CDMA." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/68877944425944943428.

Testo completo
Abstract (sommario):
博士<br>國立臺灣大學<br>電信工程學研究所<br>94<br>Multi-carrier multiplexing and Code-Division-Multiple-Access are two promising signaling technologies in wireless frequency-selective-fading channels. In this dissertation, their combination, Multi-Carrier CDMA (MC-CDMA) transmission, is studied to support wireless multimedia communications in broadband wireless channels. Two multi-rate MC-CDMA transmission schemes based on Multi-Code (MC) and Variable-Spreading-Length (VSL) concepts are proposed and the related system issues and reception problems are investigated. Multiuser detections supporting MC/VSL dual
Gli stili APA, Harvard, Vancouver, ISO e altri
43

Ting, Yi-Ting, and 丁奕廷. "Fairness Mechanism for Multi-rate Multi-media Communication in 802.11e." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/30647566215636800421.

Testo completo
Abstract (sommario):
碩士<br>國立交通大學<br>電信工程研究所<br>101<br>The IEEE 802.11e Enhanced Distributed Channel Access (EDCA) provides a class-based differentiated quality of service (QoS) to IEEE 802.11 WLANs. But since EDCA mechanism only takes single-rate network environment into account, when it equipped in the multi-rate network it can’t function well. That’s because the 802.11e standard provide time fairness among the high priority access category which may influence the QoS performance of the low speed users. And among the low priority access category, 802.11e provides same probability of channel access to all users.
Gli stili APA, Harvard, Vancouver, ISO e altri
44

Qadir, Junaid Computer Science &amp Engineering Faculty of Engineering UNSW. "Improving broadcast performance in multi-radio multi-channel multi-rate wireless mesh networks." 2008. http://handle.unsw.edu.au/1959.4/41214.

Testo completo
Abstract (sommario):
This thesis addresses the problem of `efficient' broadcast in a multi-radio multi-channel multi-rate wireless mesh network (MR$^2$-MC WMN). In such a MR$^2$-MC WMN, nodes are equipped with multiple radio network interface cards, each tuned to an orthogonal channel, that can dynamically adjust transmission rate by choosing a modulation scheme appropriate for the channel conditions. We choose `broadcast latency', defined as the maximum delay between a packet's network-wide broadcast at the source and its eventual reception at all network nodes, as the `efficiency' metric of broadcast performance
Gli stili APA, Harvard, Vancouver, ISO e altri
45

Chen, Yi-Hsiu, and 陳奕秀. "Optimal Network Selection for Multi-rate and Multi-AP WiFi System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/bjuwf4.

Testo completo
Abstract (sommario):
碩士<br>國立交通大學<br>電信工程研究所<br>103<br>Due to increasing requirements of wireless network, users’ requirements of performance in wireless network also increase. To provide better Qos (Quality of Service), we have to provide good performance in multi-rate and multiple APs scenario. Here we discuss throughput and delay for performance, and use IEEE 802.11 standard for wireless network in the following discussion and analysis. Consider that there are many APs in the system, each client can choose which station to connect now, and different connections affect throughput and delay of system. This is a n
Gli stili APA, Harvard, Vancouver, ISO e altri
46

Chang, Hao-Wei, and 張豪偉. "An Efficient Multi-Channel MAC Design in Multi-Rate IEEE 802.11." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/53186420670587379712.

Testo completo
Abstract (sommario):
碩士<br>逢甲大學<br>資訊工程所<br>97<br>In IEEE 802.11, the transmission rate of the data signals is different from the transmission rate of control signals. The different transmission rate causes the different signals coverage. Usually the control signals coverage is 4 to 6 times bigger than data signals coverage. There are two problems occur in different signals coverage. One is the communication pair has finished handshaking but they can’t transmit data packet. Because of the data signals can’t reach the communication receiver nodes. The other is all the nodes in control signal coverage they can’t com
Gli stili APA, Harvard, Vancouver, ISO e altri
47

Zong, Pingping. "Novel multiuser detection and multi-rate schemes for multi-carrier CDMA." Thesis, 2001. http://library1.njit.edu/etd/fromwebvoyage.cfm?id=njit-etd2001-096.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
48

Shen, Sz-Ting, and 沈思廷. "Distributed Rate-Loss Based Channel Assignment in Multi-Rate Wireless Mesh Networks." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/01611275035871278791.

Testo completo
Abstract (sommario):
碩士<br>國立臺灣大學<br>資訊工程學研究所<br>97<br>Wireless Mesh Networks(WMNs) provide cost-effective broadband access for users. Multi-Channel Multi-Radio Wireless Mesh Networks has been one of the most important research topic. In WMNs, much attention has been paid to the problem that how to efficiently utilize multiple orthogonal channels and multiple communication radios to enhance the aggregate throughput. Most of prior works on the channel assignment problem assume that all transmission links use the basic rate and do not consider the presence of multiple bit-rates. However, in multi-rate wireless net- w
Gli stili APA, Harvard, Vancouver, ISO e altri
49

Wang, Jen-Tsung, and 王仁宗. "M3AC: The Robust Multi-Channel, Multi-Rate MAC Protocol for Multi-Hop Wireless Networks." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/16302589787682396481.

Testo completo
Abstract (sommario):
碩士<br>義守大學<br>資訊工程學系<br>92<br>The wireless mobile ad hoc networks (MANET) are becomes increasing popular. By connecting a cluster of mobile hosts, the applications of MANET appear in places where pre-deployment of network infrastructure is difficult or unavailable and emerging communication is required (e.g., natural disasters, battle fields, history building, and festival field grounds). Due to the ratification of standards, wireless devices can transmit at high data rate. IEEE 802.11a operates in the 5GHzband at data rate up to 54Mbps. IEEE 802.11b operates in the 2.4GHz band at 5.5 and 11 M
Gli stili APA, Harvard, Vancouver, ISO e altri
50

Chang, Yu-Min. "Multi-Rate LDPC Decoder for IEEE 802.16e." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2807200715300700.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
Ti possono interessare anche gli elenchi di altri tipi di fonti sul tema "Multi-rate":
Articoli di riviste Libri
Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!

Vai alla bibliografia