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Dissertations / Theses on the topic 'DIRECT BROADCAST SATELLITES'

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Published: 4 June 2021
Last updated: 30 July 2024

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1

Marzolini, Remo G. A. "Demodulator techniques in satellite communications systems for direct broadcast systems." n.p, 1995. http://ethos.bl.uk/.

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2

Marzolini, Remo G. A. "Demodulator techniques in satellite communication systems for direct broadcast systems." Thesis, Open University, 1996. http://oro.open.ac.uk/57636/.

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This thesis is concerned with the FM demodulator techniques used in terrestrial TV receiver designs for Direct Broadcast Systems (DBS) from satellites. The various MAC/Packet schemes intended for DBS applications are described and the international standards that apply to them considered, with particular emphasis on the D2-MAC system. Noise in FM systems is discussed and a suitable threshold noise model is chosen for use in DBS TV demodulator systems. The characteristics of the various types of noise effects are considered in terms of their effect upon the TV picture. The threshold performance of a conventional FM demodulator for differing types of modulation is reviewed and it is shown how the threshold characteristic depends upon the nature of the modulation. The literature review carried out represents a significant component of the thesis and combines material from patent literature with more conventional source materials from professional journals, conferences, textbooks, etc. Some ten existing demodulator concepts that exhibit threshold extension characteristics are examined, and where relevant their potential performance in D2-MAC format systems is assessed. The demodulator characteristics that limit their performance in TV systems are identified. It is concluded that designing a threshold extension demodulator, with reliable operation, for all picture contents and for a wide range of input carrier-to-noise ratios, is a formidable task using existing design techniques. On the basis of this examination an adaptive threshold extension demodulator concept is proposed, that utilises information contained within the signal structure to achieve an improved performance over a wide range of input carrier-to-noise ratios and picture content. It is shown how the relevant signal structures may be derived from conventional (PAL, SECAM and NTSC), MAC format and all-digital television systems. Illustrations are given that show how the adaptive demodulator concept can be applied to certain existing threshold extension demodulators, enhancing their performance for television picture reception. Future trends in all-digital DBS TV systems intended ultimately for DBS applications are briefly discussed together with their demodlilation requirements.
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3

Wise, Andrew Stewart. "Does Cable Television Face a Nationwide Competitor in Direct Broadcast Satellite Service?" Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/33545.

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An important problem for economists and policy-makers concerning the cable industry is whether the cable industry faces widespread direct competition. Only one roughly comparable, nation-wide competitor exists, Direct Broadcast Satellite ("DBS"), and there are some indications that DBS does not constrain cable prices. The model presented in this paper indicates that DBS and cable compete imperfectly in terms of monthly prices, if at all, but compete more directly in terms of the premium-level services they offer. Other factors may indicate whether a community is open to advanced services like DBS, such as whether the cable operators offers high-speed Internet access.
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4

Mitani, Junko. "The place of DBS in Japan's movement toward the highly advanced information society /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59413.

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This thesis focuses on the development of the Direct Broadcasting Satellite in Japan under its Kodo Johoka Shakai (Highly Advanced Information Society) policy. The field of new media policies is relatively new but very important in communications studies. The development of new media technologies changes into existing media systems, and profoundly influences economies which are increasingly dependent upon information services.
Japan's case is particularly interesting. Relatively little is known about its DBS policy compared to other industrialized countries, even though Japan has already begun to operate DBS under its own version of the "information society", the Kodo Johoka Shakai (Highly Advanced Information Society). The formulation of DBS policy is related to many factors, including space development, research and development, broadcasting, international telecommunications regulations and economic competition both in international and domestic markets. In order to take these factors into consideration, an historical approach and institutional analysis are used in this thesis.
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5

Pathania, Geetika. ""When global companies localize" : adaptive strategies of media companies entering India /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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6

Jesser, William Augustus. "Coding performance on satellite channels using AX. 25 protocol /." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06302009-040244/.

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7

Haupt, George Holbrook. "Everywhere and nowhere at once /." Online version of thesis, 1992. http://hdl.handle.net/1850/11606.

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8

Mugoni, Petronella Chipo. "Satellite television use among Zimbabwean professionals : an investigation into audience consumption of SABC Africa's '60 Minutes live in Africa'." Thesis, Rhodes University, 2007. http://hdl.handle.net/10962/d1007707.

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Within the context of debates surrounding the consumption of global media by local audiences in Third World countries, this study explores the reasons behind satellite television subscription, and consumption of international news among a sample of young professional men and women in contemporary Zimbabwe. The study seeks to uncover how the research participants respond to news broadcast on SABC Africa's '60 minutes live in Africa', a programme which they can only access via satellite television in their country. Working within the frame of audience studies which insists on understanding media consumption and reception in context, this study examines how the respondents, situated within the specific Zimbabwe context, characterised as it is by serious social, economic and political challenges, respond to both regional news and news about their country on '60 minutes live in Africa'. Within the frame of qualitative research the study employs a two-stage sampling procedure and data collection strategy to uncover the factors that underpin international media consumption and reception by professional men and women situated in a country undergoing rapid change. The findings of the study point to the various social and individual factors that underlie media consumption choices as well as to the different socially patterned reasons why local audiences are either attracted to, or reject global media. The study found that SABC Africa's '60 minutes live in Africa' is more popular and better received than Western-broadcast programmes on channels such as BBC, CNN, and Sky News among Zimbabwean professionals. I also uncovered some evidence that cultural proximity and relevance are of supreme importance in determining which media audiences chose to consume and what level of engagement they bring to their reception of global media. These and other findings directly confront media models that privilege beliefs in cultural imperialism and the dominance of Western media and their effects on Third World audiences.
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9

Simmons, Diena L. "Motivations and Gratifications for Selecting a Niche Television Channel: BYU Television." BYU ScholarsArchive, 2002. https://scholarsarchive.byu.edu/etd/5110.

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The growth of direct broadcast satellite television distribution to the home as a viable competitor to cable and terrestrial broadcast has fostered the availability of special interest or niche channels and therefore provided greater choice to the viewer. This study, based on uses and gratifications theory, examined the relationships among ritual and instrumental viewing motivations and satisfactions, viewer religiosity, and viewing attentiveness as they related to the selection of a niche television channel, Brigham Young University Television. The uses and gratification approach provides an appropriate framework for studying "media consumption, the interrelated nature of television user motives, and the relationships among viewing motives and viewing patterns" (Abelman, 1989, p. 57). Data was gathered by way of an online survey of non-random, self-selected BYU Television viewers. Participants answered 67 questions about their motives for choosing to view BYU Television and the gratifications they received from their viewing. The 596 valid responses to the survey were analyzed. The study results are in harmony with previous uses and gratifications studies examining ritual and instrumental viewing patterns. The data found positive relationships between instrumental viewing motives and instrumental viewing satisfactions, as well as instrumental viewing motives and viewing selectivity. There was no support for those hypotheses that dealt with the level of viewing attention as it related to religiosity or instrumental viewing motives. Future topics of study are suggested including the opportunity an expanded media universe provides to increase the depth and breadth of uses and gratification theory, as well as to study the role of niche television services in community building.
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10

Howayek, Hayat. "Géopolitique et discours des télévisions d'information arabe par satellite de la 1ère guerre du Golfe à l'occupation de l'Irak (1991-2003)." Thesis, Paris 2, 2011. http://www.theses.fr/2011PA020033/document.

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Le phénomène des télévisions satellitaires a fait son apparition dans le monde arabe en 1990-1991. Date de l’instauration du Nouvel Ordre Mondial. Une progression foisonnante s’est produite, par la suite, profitant d’un espace géolinguistique étendu, d’une ouverture sans précédent et d’un financement généreux. Sont-elles l’expression d’un changement ou bien celle d’une adaptation ? Et au service de qui ? L’étude des chaines d’information en continu Al Jazeera, Al Arabiya ou « flexibles », Abou Dhabi et Al Manar est particulièrement intéressante pour répondre à cette question. Comprendre le fond de ce phénomène, les intérêts qu’il représente, qu’il sert, et les limites du changement qu’il est capable de produire, exige de dresser un état des lieux panoramique, une étude de la géopolitique qui a donné lieu à la naissance de ces télévisions, et qui a dicté les évolutions qu’elles ont subit. L’analyse du contenu et du discours vient repérer les expressions d’une culture démocratique, ou anti démocratique, dont dépend la nature du changement
Since 1990-1991, the number of satellite channels and viewers has grown exponentially in the Arab world, taking advantage of a geolinguistic space that afforded unprecedented degree of openness in a field previously dominated by t ightly-controlled state-owned television stations. The date also coincides with the inception of the New World Order, the waging of the first Gulf War which established a new regional order, and the stirrings of the society of communication. This study of news channels (Al Jazeera, Al Arabiya) and “flexible” channels such as (Abu Dhabi and Al Manar), aims to examine whether they are an expression of change or adaption and whether they serve to perpetuate the status quo of the powers that fund them
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11

Wu, Yu Wen, and 吳昱. "Design and Fabrication of High-Gain Low-Noise Amplifier for Ku- Band Direct-Broadcast Satellites." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/02106938290224500265.

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12

林秀美. "Direct Broadcast Satellite: An Analysis of DBS Industry Competition in Taiwan." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/trjjg2.

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13

林秀美. "Direct Broadcast Satellite: An Analysis of DBS Industry Competition in Taiwan." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/77061847075402502201.

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14

Barraclough, Steven. "Responses to satellite television in Pakistan, Iran and Egypt." Phd thesis, 2000. http://hdl.handle.net/1885/147686.

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15

YU, SHAN-CHENG, and 于善靜. "A STUDY OF THE FUTURE DEVELOPMENT OF DIRECT BROADCAST SATELLITE IN TAIWAN." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/ejz3bb.

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16

YU, SHAN-CHENG, and 于善靜. "A STUDY OF THE FUTURE DEVELOPMENT OF DIRECT BROADCAST SATELLITE IN TAIWAN." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/91319324871801977832.

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17

Yang, Songnan. "Antennas and Arrays for Mobile Platforms -- Direct Broadcast Satellite and Wireless Communication." 2008. http://etd.utk.edu/2008/August2008Dissertations/YangSongnan.pdf.

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18

nan-ku, Lin, and 林南谷. "Case studies for Direct Broadcast Satellite--primary approach for operational the marketing strategies." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/32529451534968360760.

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碩士
銘傳大學
傳播管理研究所
89
Ever since the very first Direct Broadcast Satellite (DBS, also known as DTH, Direct to Home) established in the United States in 1994, the DBS soon became the most competitive opponent to the Cable Television System. In 1996, the subscription to DBS had an enormous increase up to 2 million, which included audience from the Cable system. Therefore, not only the American Congress Research Report but the National Cable Television Association (NCTA) has claimed that DBS would be the biggest contender to the cable system (Stern, Connie, 1996:42). Although we have seen plenty of marketing strategies for various other industries, there’s few for the television media, let alone the rising direct broadcast satellite area. Through the case study of the Pacific Digital Media Network and Mega Media Broadcasting Network, these two companies that had been issued the operation licenses of direct broadcast satellite by the Government Information Office (GIO), this research wants to explore the marketing strategy for DBS. Attempting to conclude the marketing strategy for DBS within Taiwan, as the references provided for the operators or the cable media in the future. The current marketing strategy for DBS in Taiwan, including the STP strategy contains targeting strategy and positioning strategy and the product strategy, price strategy, place strategy and promotion strategy within the marketing mix. The paper came up with the following observations: 1.The targeting strategy. One should take the concentrated marketing at the beginning, try to develop the suitable merchandise and marketing strategy while set the target market from several segmentation markets by the different marketing. 2.The positioning strategy. The operators should find out where the audiences are in the DBS target market and what they need in the first place then proceed with the DBS positioning. 3.The product strategy. The agent ought to emphasize on the content of the “channel classification” and to separate the attribution of its own aspects from many rivals to multiply the audiences’ viewing options. 4.The price strategy. Setting the goal to gain the instant acceptance from the audience of the new DBS by adopting the low price strategy. 5.The place strategy. Expanding the distributing level down to the retailers or perhaps forging the alliance with other operations. 6.The promotion strategy. Fully utilize the advertisements and commercial of all kinds of media. To provide the web-news service free of charge on the Internet makes consumers aware the existence of the “direct satellite”, therefore, to enlarge the DBS ratio within the TV market.
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19

Yang, Chingyen, and 楊青燕. "A study on the Direct Broadcast Satellite system - a case study of CSTV." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/22594666774977311945.

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碩士
玄奘大學
大眾傳播研究所
100
Chinese Satellite Communication Group (CSTV) was the first private organization in Taiwan that involved overseas broadcast with Direct Broadcast Satellite (DBS) system. CSTV has created its own market along with the slogan “Wherever there are Chinese people, there will be CSTV”. In order to provide services for all the overseas Chinese, CSTV has utilized DBS system to broadcast overseas channels. The purposes were to provide overseas Chinese with information and news of their motherlands, to relieve their homesickness, and to increase their cohesion and solidarity to the motherlands. CSTV was also the most aggressive and effective private channel operator in Taiwan that geared towards the overseas Chinese TV market. Therefore, this research utilized the literature review method to analyze the related data of CSTV. In-depth interviews were conducted in order to probe into CSTV’s history, its current situation, the relationship between CSTV and other channel operators, and how CSTV developed the overseas Chinese markets through the DBS system. There were a total of five professionals being interviewed, and the strategies of developing the overseas DBS markets were discussed. This research discovered that CSTV started with the company called “Changcheng Information”. CSTV has gone through many difficulties in the process, including buying TV air time. It originally had 12 channels and gradually increased to today’s 27 channels. Although it has made a lot of progress, there is still much room for improvement when comparing to other international media. Initially, CSTV tried to develop the DBS system in Australia, Indonesia, and the Greater China Area. However, due to the consideration of cost efficiency, only the system in the Greater China Area left. Another new-established company kept running the business in Indonesia, but many difficulties have caused some struggles. In addition, on one hand, the CSTV operators were worried about that IPTV might become a possible threat. On the other hand, they believed that the DBS system should be the best tool to develop overseas markets for the current stage. Because overseas Chinese still relied on the fixed network, the channel operators would be in a dilemma indeed.
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20

Kimbro, Clay William. "The effects of consumer switching costs on competition between direct broadcast satellite and cable." 2008. http://purl.galileo.usg.edu/uga%5Fetd/kimbro%5Fclay%5Fw%5F200805%5Fma.

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21

WU, HUI-CHI, and 吳蕙萁. "The Design of Improved Low Noise Block-converter in the Rceiving System of Direct Broadcast Satellite." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/15437880386291447054.

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碩士
國防大學中正理工學院
電子工程研究所
90
This paper presents the design of a low noise block-converter (LNB) using a frequency-conversion type active integrated antenna (FCAIA). A planar microstrip-circular-slot antenna, which is easier to integrate with other components, will replace the rectangular waveguide in conventional LNB. A self-mixing oscillator (SMO) with single transistor is designed to combine the function of local oscillator and mixer. Then, it is integrated with proposed antenna to complete the design of the FCAIA. Satellite signals received from FCAIA is direct converted to IF range. To properly filter the IF signals, a microstrip-ring filter having both the properties of fixed-frequency-rejected and low-pass filters is proposed. It is also applied to the design of SMO as the role of resonator, replacing dielectric resonator that is generally used in conventional LNBs. A high gain IF amplifier must be used to amplify the signal level to conform the specification of the direct broadcast satellite system. The proposed design of LNB will simplify the circuits of conventional ones. It’s also easier to manufacture the planar array antenna, which is easy for setting. In future, we can apply the architecture presented in this paper to design the integrated circuit of the receiver in Low Geo Orbit systems.
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22

Al-Rashoud, Abdullah. "Satellite broadcasting & national development : relevance to Saudi Arabia." Phd thesis, 2001. http://hdl.handle.net/1885/148158.

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23

Karanfil, G{u00F5}k{u00E7}en. "The impact of satellite television on Turkish-Australians : changing notions of identity in diaspora." Phd thesis, 2007. http://hdl.handle.net/1885/149609.

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24

BOUILLIEZ, Virginie. "Television et droit d'auteur : De la protection des oeuvres contenues das les programmes aux nouvelles techniques de telediffusion." Doctoral thesis, 1990. http://hdl.handle.net/1814/4578.

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Defence date: 22 June 1990
Examining board: M.A. Françon, Président de l'IRPI Henri Desbois ; M.G. Koumantos, Président de l'ALAI, professeur à l'Université d'Athènes ; M.M. Fabiani, professeur à l'Université de Rome ; M.B. de Witte, professeur à l'Université de Maastricht ; M.U. Jessurun D'Oliveira, professeur à l'IUE
First made available online: 23 September 2015
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25

Maguire, Thomas E. R. "A light in every home : Huda TV's articulation of Orthodox Sunni Islam in the global mediascape." 2009. http://hdl.handle.net/2152/18442.

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The past two decades have witnessed a dramatic growth in Middle Eastern satellite television. The corresponding diversification of content and restructuring of media power in the region raise many important questions for research. This dissertation is a case study of Huda TV, an English-language Islamic satellite channel broadcasting from Cairo, Egypt. The author collected participant observation data as an employee of the channel in 2005-2006. The primary research question asks how Huda TV asserts an Islamic presence in the satellite television arena. Many areas of media research, including the broad historical debates on culture and power, contemporary conceptions of hybridity, and the analysis of media institutions in the Middle East, share an overarching secular bias. Consequently, this dissertation plots out relevant bodies of theoretical and empirical research that both inform and constrain the kind of questions that can be asked about Huda TV as a Muslim institution. With a conscious effort to overcome the reductionist secularism of media studies, this work offers empirical data on the manner in which orthodox Sunni Islam operates within the global mediascape--the increasingly integrated, geographically expansive, and globally accessible media environment of which satellite television is one important component. This dissertation first examines the concrete manner in which Huda TV attempts to define Islamic satellite television as a distinct set of content and practices. Next, it turns to the channel's engagement with dominant discourses and bodies of knowledge that may compete with Islam for ultimate authority. Finally, it examines the impact of cultural and political-economic factors on the channel's work. This dissertation offers original insights into the study of contemporary Islam and contributes to significant, enduring questions of media research.
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