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Dissertations / Theses on the topic 'Multipath interference'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Faragher, Ramsey Michael. "Effects of multipath interference on radio positioning systems." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612008.

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2

Cheng, Cheng. "GNSS Multipath and Interference Mitigation Using Bayesian Methods." Thesis, Toulouse, ISAE, 2015. http://www.theses.fr/2015ESAE0011.

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Les récepteurs GNSS sont utilisés pour estimer la position et la vitesse d’un véhicule à partir de signauxtransmis par des satellites. L’estimation est habituellement réalisée en plusieurs étapes. Lesparamètres des signaux qui concernent le délai de propagation, la phase et la fréquence Dopplerde la porteuse, sont estimés et exploités pour estimer des mesures de pseudo-distances et de delta-distances.Ces mesures sont ensuite utilisées comme observation de la position et de la vitesse parl’algorithme de navigation qui délivre l’état du véhicule. En environnement GNSS dégradé les signauxémis par

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3

Rice, Michael, and Qiang Lei. "SHF MULTIPATH CHANNEL MODELING RESULTS." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/604799.

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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>This paper presents the results of land-based SHF channel modeling experiments. Channel modeling data were collected at Edwards AFB, California at S-Band, X-Band and Ku-band. Frequency domain analysis techniques were used to evaluate candidate channel models. A graphical user interface (GUI) was developed to search for the optimum channel parameters. The model parameters corresponding to d

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4

Seco, Granados Gonzalo. "Antenna arrays for multipath and interference mitigation in GNSS receivers." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/6876.

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Esta tesis aborda la sincronización de una o varias réplicas de una señal conocida recibidas en un entorno con propagación multicamino e interferencias direccionales. Uno de los hilos conductores de este trabajo es la aplicación sistemática del principio de máxima verosimilitud (ML) junto con un modelo de señal en el cual las armas espaciales no tienen estructura, y en cual el ruido es Gaussiano y presenta una matriz de correlación desconocida. Esta última suposición es fundamental a la hora de obtener estimadores capaces de atenuar las señales interferentes que presentan algún tipo de estruc

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5

McMurdie, Andrew, and Eric Perrins. "iNET Preamble Detector Performance in the Presence of Multipath Interference." International Foundation for Telemetering, 2014. http://hdl.handle.net/10150/578172.

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ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CA<br>The iNET preamble can be used to estimate the frequency offset and multipath channel in an aeronautical telemetry link. To accomplish this, the receiver must be able to identify the start of the preamble within the received data stream in the presence of uncompensated frequency offset and unknown multipath channel. In this paper, we explore the performance of seven candidate preamble detect

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6

Perrins, Erik. "ON THE PERFORMANCE OF MULTI-H CPM IN MULTIPATH INTERFERENCE." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/606378.

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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California<br>The performance of multi-h CPM over multipath interference channels is evaluated with computer simulations using the optimal coherent receiver and a suboptimal noncoherent receiver. For channels with high-amplitude short-delay multipath reflections, the simulations show that both receivers reach an error floor in their performance as the amplitude of the multipath reflections grows. The rate of degradation for the noncoherent receiver is worse than for

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7

Davis, Adam Todd. "DYNAMIC BEHAVIOR OF MULTIPATH INTERFERENCE IN ARTM CHANNEL SOUNDING DATA." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/606500.

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International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California<br>Data collected during July 1999 at Edwards EAFB by the Advanced Range Telemetry (ARTM) program is examined to characterize the dynamic behavior of multipath interference in an aeronautical telemetry channel. Multipath fade events are analyzed in the frequency domain to show how these fades appear, evolve, and disappear from the channel. A channel model and examples from the channel sounding data are used to show the dynamic nature of these fade even

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8

Rice, Michael, and Daniel H. Friend. "Antenna Gain Pattern Effects on Multipath Interference in Aeronautical Telemetering." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607555.

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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>This paper examines the effect of antenna gain pattern on multipath fades for a typical aeronautical telemetry system. Assuming a parabolic reflector antenna at the tracking station and a single specular reflection as the source of multipath, an expression for the fade depth which incorporates the attenuating effects of the antenna gain pattern is derived. A representative example is presented which demonstrates the utility of the expressions derived.

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9

Abdulrahman, Majeed Carleton University Dissertation Engineering Systems and Computer. "DFE for interference and multipath suppression in a CDMA system." Ottawa, 1993.

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10

Dye, Ricky G., and Lyman D. Horne. "PARAMETER CHARACTERIZATION ON A TELEMETRY CHANNEL INCLUDING THE EFFECTS OF THE SPECULAR RAY." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608412.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>The aeronautical channel model is a good candidate for modeling the effects of multipath interference of telemetry signals on test ranges. The aeronautical fading channel model is parameterized by the signal to noise ratio, the Doppler shift and time delay between the specular and direct components, the specular to direct power ratio, the direct to diffuse power ratio, and the bandwidth of the multipath fading process. Segments of weighting signal data measured during a t

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11

Lo, Norm W. K. (Norman Wai Keung) Carleton University Dissertation Engineering Systems and Computer. "Adaptive equalization for a multipath fading channel in the presence of interference." Ottawa, 1994.

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12

Lim, Seau Sian. "Antenna array single- and multi-user DS-CDMA receivers." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367916.

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13

Mowbray, Robert Stephen. "Interference and multipath cancellation for increased subscriber capacity in spread spectrum communication systems." Thesis, Edinburgh Napier University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386003.

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14

CARLSON, JOHN R., and ARLEN SCHMIDT. "AIRBORNE/SHIPBORNE PSK TELEMETRY DATA LINK." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/612917.

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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>This paper describes the design considerations and methodology applied to solve the practical problems posed in the creation of a high bit rate telemetry relay system and specifically the techniques implemented to enhance signal to noise performance under adverse operational conditions.

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15

Kamirah, Daniel K. "OFDM Performance on Aeronautical Channnels." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606130.

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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>This paper provides an introduction to the Orthogonal Frequency Division Multiplexing (OFDM) scheme which has been proposed for future aeronautical telemetry applications. OFDM offers the potential for high data rates on radio channels with multipath such as aeronautical telemetry channels. This paper provides in introduction to OFDM and demonstrates how orthogonality is maintained over multip

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16

Chen, Chi-She. "Using TD/CCSK spread spectrum technique to combat multipath interference in a multiple user system." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1179519410.

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17

Kajale, Nikhil Vijay. "UWB and WLAN Coexistence: a Comparison of Interference Reduction Techniques." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001145.

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18

Ibrahim, Jihad E. "Algorithms and Architectures for UWB Receiver Design." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/26105.

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Impulse-based Ultra Wideband (UWB) radio technology has recently gained significant research attention for various indoor ranging, sensing and communications applications due to the large amount of allocated bandwidth and desirable properties of UWB signals (e.g., improved timing resolution or multipath fading mitigation). However, most of the applications have focused on indoor environments where the UWB channel is characterized by tens to hundreds of resolvable multipath components. Such environments introduce tremendous complexity challenges to traditional radio designs in terms of signal d

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19

Mirbagheri, Arash. "Linear MMSE receivers for interference suppression & multipath diversity combining in long-code DS-CDMA systems." Thesis, Waterloo, Ont. : University of Waterloo, 2003. http://etd.uwaterloo.ca/etd/amirbagh2003.pdf.

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Thesis (Ph.D)--University of Waterloo, 2003.<br>"A thesis presented to the University of Waterloo in fulfilment of the thesis requirement for the degree of Doctor of Philosophy in Electrical and Computer Engineering". Includes bibliographical references. Also available in microfiche format.

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20

Zhang, Yunjun. "Analysis and cancellation of inter-carrier interference for OFDM systems over time-variant multipath fading channels." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6065.

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The orthogonality among the subcarriers of OFDM systems may be impaired by the time-selectivity of the fading channels. The loss of the orthogonality results in ICI, and if it is not treated appropriately, the system performance may not be improved only by increasing the signal-to-noise ratio. In other words, ICI results in error floors. This research work concentrates on the ICI analysis and cancellation, and also on the effects of channel time-selectivity on the OFDM systems over frequency-selective time-variant mobile fading channels. In the first part of this study, a general time-variant

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21

Chen, Nan. "An IEEE 802.15.4 Packet Error Classification Algorithm : Discriminating Between Multipath Fading and Attenuation and WLAN." Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-24918.

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In wireless sensor networks, communications are usually destroyed by signal attenuation, multipath fading and different kinds of interferences like WLAN and microwave oven interference. In order to build a stable wireless communication system, reactions like retransmission mechanisms are necessary. Since the way we must react to interference is different from the way we react to multipathfading and attenuation, the retransmission mechanism should be adjusted in different ways under those different cicumstances. Under this condition, channel diagnostics for discriminating the causes that corrup

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22

Norman, Terence R. "An investigation into the effects of multipath interference and their significance in the design of radio frequency identification systems." Thesis, University of Manchester, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616285.

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This thesis investigates multipath interference and the implication of this phenomenon for the design of future radio frequency identification devices, or RFID tags. The future radio frequency identification market and the design of appropriate tags is discussed. In particular utilising microwave carrier frequencies to extend tag-to-reader range and increase product functionality is considered. It is demonstrated that whilst the broader bandwidth inherent in microwave frequencies does allow an increase in RFID product functionality multipath interference effects will severely limit the range a

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23

Jian, Wang, and Xie Yan. "Behavior Modeling of a Digital Video Broadcasting System and the Evaluation of its Equalization Methods." Thesis, Linköping University, Computer Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54632.

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<p>In this thesis, a single carrier ATSC DTV baseband transmitter, part of the receiver(including channel estimator and channel equalizer), were modeled. Since multi-pathinduced ISI (inter symbol interference) is the most significant impact on theperformance of single carrier DTV reception, modeling and implementation of singlecarrier channel estimator and channel equalizer have been the focus of the thesis. Westarted with the investigation of channel estimation methods. Afterwards, severalchannel estimators and equalizers were modeled and the performance of each channelequalization methods in

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24

Pirinen, P. (Pekka). "Effective capacity evaluation of advanced wideband CDMA and UWB radio networks." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514282701.

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Abstract High radio capacity is one of the main targets in wireless network planning. The characteristics of the broadband radio channel pose serious challenges for achieving this goal. This thesis views the capacity problem from two frameworks. In the first, the effective user capacity in advanced direct sequence wideband code-division multiple-access (DS-CDMA) radio networks is evaluated. Sensitivity to various imperfections in key system parameters is studied. The analysis is based on a mathematical foundation that presents complex signal models and enables evaluation of the performance los

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25

Altan, Han. "Dual Antenna Use on a GPS Receiver." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606154.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California<br>Due to vehicle dynamics in mobile systems, GPS signal reception may be blocked by the body of the vehicle. This paper discusses various studies made on some vehicles such as the Space Shuttle, various aircraft, and analyzes the implementation of dual GPS antenna systems. Constructive and destructive interference characteristics of signal combining are considered. The author sugg

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26

Xingwen, Ding, Zhai Wantao, Chang Hongyu, and Chen Ming. "CMA BLIND EQUALIZER FOR AERONAUTICAL TELEMETRY." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624262.

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In aeronautical telemetry, the multipath interference usually causes significant performance degradation. As the bit rate of telemetry systems increases, the impairments of multipath interference are more serious. The constant modulus algorithm (CMA) blind equalizer is effective to mitigate the impairments of multipath interference. The CMA adapts the equalizer coefficients to minimize the deviation of the signal envelope from a constant level. This paper presents the performances of the CMA blind equalizer applied for PCM-FM, PCM-BPSK, SOQPSK-TG and ARTM CPM in aeronautical telemetry.

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27

Havel, Ladislav. "Počítačový návrh digitálního radioreléového spoje." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218029.

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The Terrestrial digital radio links are used for transmitting digital information between fixed stations on a line of sight of a radio path. Each digital radio link has many characteristics and parameters for transmission. We require technical parameters in the design of digital radio link such as data rates and capacities. In this design we should take into account most effects of the electromagnetic waves propagation, if we want to meet user technical requirements of the link and if that link may correctly transmit digital signals with minimum errors. Prediction methods for the design of ter

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28

Křivka, Petr. "Počítačové modelování datového přenosu po silnoproudých vedeních." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219335.

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The master‘s thesis is focused on data transfer over power lines. The influence of connected devices on data signal is studied. In this thesis, you can find the descriptions of PLC technology characteristics, sources of signal interruption and, mainly, the method of modelling the PLC channels as a multipath signal propagation environment is thoroughly discussed. There are models of PLC channels using this method projected in Simulink. The analysis of the influence of connected devices to bit error rate of a signal is processed. The devices are modelled by connected impedance.

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29

Bradáč, Lubomír. "Model distribuční energetické sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219469.

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The thesis is focused on PLC technology issues and thus the data transmission over a power-line. This work describes characteristics of the PLC technology, its usage, functional principles and used modulation techniques. The main part of the work describes individual kinds of interferences in the network. The method of necessary steps against these interferences by using the right modulation and relevant coding is also described in the thesis. On the basis of theoretical knowledge, the models of interferences are realized in Matlab/Simulink. The simulative model of power-lines with random para

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30

Queiroz, Diego Véras de. "Simulação realista de redes de sensores sem fio industriais." Universidade Federal da Paraíba, 2016. http://tede.biblioteca.ufpb.br:8080/handle/tede/9248.

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Submitted by Fernando Souza (fernandoafsou@gmail.com) on 2017-08-14T10:56:32Z No. of bitstreams: 1 arquivototal.pdf: 4889368 bytes, checksum: 2154a6772c98f0f2fb36fa3148dc4a24 (MD5)<br>Made available in DSpace on 2017-08-14T10:56:32Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 4889368 bytes, checksum: 2154a6772c98f0f2fb36fa3148dc4a24 (MD5) Previous issue date: 2016-02-29<br>A Wireless Sensor Network (WSN) can be characterized by the use of sensor nodes in varied environments for many different applications, e.g., monitoring and control systems applications in industrial environments.

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31

Ellinger, John David. "Multi-Carrier Radar for Target Detection and Communications." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1463839176.

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32

Nguyen, Xuan Vinh [Verfasser]. "Super-resolution compressed sensing for resolving time-of-flight multipath interferences / Xuan Vinh Nguyen." Siegen : Universitätsbibliothek der Universität Siegen, 2018. http://d-nb.info/1173421858/34.

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33

Ma, Hang. "Using chaos to enhance multi-user time-of-arrival estimation : application to UWB ranging systems." Thesis, Toulouse, INSA, 2014. http://www.theses.fr/2014ISAT0008/document.

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Dans les décennies à venir, la connaissance d’informations très précises concernant la position d’un objet permettra de créer des applications révolutionnaires dans les domaines sociaux, médicaux, commerciaux et militaires. La technologie Ultra-Wideband (UWB) est considérée comme un bon candidat permettant de fournir des capacités de localisation précise grâce à la mesure de l’estimation du temps d'arrivée (TOA). Dans cette thèse, des algorithmes de mesure de distance dans le cas multi-utilisateurs pour des systèmes UWB sont étudiés afin d'atteindre une bonne précision pour une faible complexi

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34

Troublefield, Robert C. "DIGITAL RECEIVER PERFORMANCE." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/606794.

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International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California<br>Bit errors often occur in a wireless communications link when impairments alter the transmitted signal. It is advantageous to be able to predict how well a system will tolerate transmission problems. This paper details laboratory performance measurements and comparisons in terms of evaluating configurations of a digital receiver for Feher patented Quadrature Phase Shift Keying (FQPSK-B) demodulation. The transmitted signal is subjected to calibrated

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35

Shang, Lei, and lei shang@ieee org. "Modelling of Mobile Fading Channels with Fading Mitigation Techniques." RMIT University. Electrical and Computer Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20061222.113303.

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This thesis aims to contribute to the developments of wireless communication systems. The work generally consists of three parts: the first part is a discussion on general digital communication systems, the second part focuses on wireless channel modelling and fading mitigation techniques, and in the third part we discuss the possible application of advanced digital signal processing, especially time-frequency representation and blind source separation, to wireless communication systems. The first part considers general digital communication systems which will be incorporated i

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36

Bouatit, Mohamed Nacer. "Optimisation du routage, tolérance aux pannes et gestion de l'énergie et de l'interférence pour la transmission des flux multimédia temps réel dans les réseaux de capteur sans fil." Thesis, Paris, CNAM, 2018. http://www.theses.fr/2018CNAM1188/document.

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Les applications multimédias, dans les réseaux de capteurs sans fil, véhiculent des données volumineuses, qui nécessitent un taux de transmission élevé et un traitement intensif et par conséquent une consommation d'énergie importante. Transmettre efficacement ces flux hétérogènes, tout en assurant leur fiabilité et garantir les exigences de QoS, avec les ressources limitées disponibles, en particulier dans les contextes critiques, demeure un verrou scientifique ouvert. C’est pourquoi, dans le cadre de cette thèse, nous nous sommes intéressés aux aspects liés : au routage, à la tolérance aux pa

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Bouatit, Mohamed Nacer. "Optimisation du routage, tolérance aux pannes et gestion de l'énergie et de l'interférence pour la transmission des flux multimédia temps réel dans les réseaux de capteur sans fil." Electronic Thesis or Diss., Paris, CNAM, 2018. http://www.theses.fr/2018CNAM1188.

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Les applications multimédias, dans les réseaux de capteurs sans fil, véhiculent des données volumineuses, qui nécessitent un taux de transmission élevé et un traitement intensif et par conséquent une consommation d'énergie importante. Transmettre efficacement ces flux hétérogènes, tout en assurant leur fiabilité et garantir les exigences de QoS, avec les ressources limitées disponibles, en particulier dans les contextes critiques, demeure un verrou scientifique ouvert. C’est pourquoi, dans le cadre de cette thèse, nous nous sommes intéressés aux aspects liés : au routage, à la tolérance aux pa

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38

"Antenna arrays for multipath and interference mitigation in GNSS receivers." Universitat Politècnica de Catalunya, 2000. http://www.tesisenxarxa.net/TDX-0730101-124722/.

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39

Lin, Po-Tsun, and 林柏村. "Performance Analysis of Multipath Interference Reduction with Adaptive Array Techniques." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/26784509694941416862.

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碩士<br>逢甲大學<br>電機工程學系<br>88<br>Facing the problems in wireless communicaiton, including multipath-fading, limited bandwidth, and co-annelinterferences. Besides that, we also have to satisfy the requirement of the incresing number of subscribers. Thus, it becomes a necessary trend to design a smart antenna system. It can mitigate multipath fading, eliminate co-channel interferences, improve transmission efficiency and increase system capacity. The key point of it is to find a proper adaptive algorithm which can be used to change its pattern quickly and to the aim of SDMA. In this thes

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40

Lin, Chien-Liang, and 林建良. "Interference and Multipath Suppression For GPS Reception Using Adaptive Beamforming." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/72934194823341931654.

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碩士<br>元智大學<br>通訊工程學系<br>98<br>The purpose of this thesis is to design a blind adaptive GPS beamformer. Although the GPS is a mature system, because the weak GPS signal will be easily affected by external interference, as well as GPS positioning mechanism is related with the reception timing, it makes the accuracy of GPS positioning vulnerable to the impact of multipath. The proposed beamformer has the ability to combat strong interference and multipath signal. Therefore the desired GPS signal can be reliable receipted in the cold boot state, and thus, it improves both the receiver system relia

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41

Yeh, Ting-hung, and 葉庭宏. "FPGA Implementation of Multipath Interference Cancellation for Passive Coherent Location Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/g6bd2g.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>99<br>This work investigates airborne target detection using a passive coherent location system, which use non-cooperative commercial broadcast signals as its transmitter sources. To locate the unknown targets, we jointly combine Angle-of-Arrival and Time-Difference-of-Arrival information. Generally, a receiver in a passive coherent location system receives the reflected target signals and the interference of clutter. The prior is usually much weaker than the latter. To obtain an accurate output of Ambiguity function, we must cancel the interference from receiver. W

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42

WEN, ZHI-HONG, and 溫志宏. "The effect of multipath interference on the performance of packet radios." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/28050506945992842997.

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43

黃子豪. "A Study on Soft Multipath Interference Cancellation Techniques for MC-CDMA Systems." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/12747845499732850276.

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44

Lin, Chih-Hung, and 林志鴻. "An Improved Multistage Parallel Interference Cancellation for CDMA in Multipath Fading Channels." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/97561785394511709756.

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碩士<br>國立清華大學<br>電機工程學系<br>88<br>This study introduces an improved multistage parallel interference cancellation (PIC) technique for binary phase shift keying (BPSK) modulated direct sequence code-division multiple access (DS/CDMA) systems over multipath fading channels. We study the improvement technique for multistage interference cancellation receivers, with a full or only a fractional cancellation of the estimated multiple access interference (MAI) and intersymbol interference (ISI) caused by multipaths at each receiver stage

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Han, Di-Yar, and 韓滌亞. "The Effect of Multipath Interference on the Performance of Cellular Mobile Communication." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/94594926667512451647.

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碩士<br>國立中正大學<br>電機工程研究所<br>81<br>During the development of communication technology, mobile telephone has been massively applied into our daily life. However, channel allocation has become a serious problem due to the rapidly increasing utilization. In order to increase the channel capacity and solve the channel allocation problem, mobile telephone system adopts the cellular architecture. This architecture turns to its advantages of frequency reuse and co- channel interference suppression

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Hsiu, Tsai Pei, and 蔡佩修. "An Improved Multistage Parallel Interference Cancellation for MC-CDMA in Multipath Fading Channel." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/34333895154008625857.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>89<br>This study introduces an improved multistage parallel interference cancellation technique for multi-carrier code-division multiple access systems over multipath fading channels. We study the improvement technique for multistage interference cancellation receivers, with a full or only a fractional cancellation of the estimated multiple access interference and intersymbol interference caused by multipaths at each receiver stage. Because the statistics of MAI and ISI are unavailable in multipath fading channels, the estimations of the MAI and ISI, especially in th

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Kuo, Ming-Chia, and 郭明家. "A New Rake Receiver Structure for Multipath Fading and Multiuser Interference In Communication Systems." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/u3wsap.

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碩士<br>逢甲大學<br>電機工程所<br>90<br>The technology of Direct Sequence Spread Spectrum has been utilized widely in mobile communication system for combating noise interference in transmission channels and keeping transmission information secret. However, the transmission bandwidth is restricted by interference when large users use common bandwidth. This problem has been a direction in processing mobile communication. On the other hand, it is known that multipath, which causes ISI and ICI, is a major reason influence the capacity of wireless TDMA communication system, and it often uses equalizer to

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King-Tai, Yang. "Space-Time Processing for Mobile Communications with Multipath Fast Fading and Co-Channel Interference." 1997. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611363653.

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Lin, Yu-hui, and 林育輝. "On the Modified PN Code Tracking Loop with Multiuser Detection and Multipath Interference Cancellation." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/14722796235182723164.

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碩士<br>國立中山大學<br>通訊工程研究所<br>92<br>A non-coherent PN code tracking loop with multi-user detection and simplified multi-path interference cancellation (MPIC) is proposed for direct sequence spread spectrum communications system. A decorrelator decision-feedback detector (DDFD) is first applied on the incoming signal to mitigate the multi-user interference. Then, a simplified multi-path interference cancellation (MPIC) is further used to increase signal quality. Finally, a modified code tracking loop (MCTL) is adopted for non-coherent PN code tracking. Mathematical expressions of the S-curve and t

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Cheng, Ming-Hsiung, and 鄭明雄. "A Design of Interference Canceller for CDMA Coherent Signal in Multipath Rayleigh Fading Channel." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/65179840991933110781.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>88<br>In this thesis, we propose the design of adaptive antenna array receiver to cancel interference of multipath Rayleigh fading for code division multiple access mobile communication system. The Pseud-random noise code is employed in multipath fading cross correlation environment in which the receiver is the decorrelating detector. We concentrate on real time technigue in the receiver, we only receive the first arrival fading path, and the fading coefficient of the first arrival path is estimated by decorrelator detector. The fading coefficient provides the refere

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