Satellite data networks for national development

Abramson, N.

doi:10.1016/0308-5961(84)90056-9

Cited by 9 publications

(2 citation statements)

References 12 publications

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“…In light of the North American experience, we might expect North American scholars to give primacy to local service in Third World telecommunication planning, This is not the case. Most writings about the revolutionary possibilities for rural telecommunication opened up by satellite technology (1,12,16,40,73,74) are most concerned with the need to connect rural points to the city. The choice has been framed as one between satellite and terrestrial technologies, such as high-frequency radio and microwave, and between the flexibility of the satellite and the rigidity of the "wired tree."…”

Section: Many Telecommunication and Development Researchers Have Fallmentioning

confidence: 99%

“…Yet, the amortization of significant portions of research and development costs by the office market, large-volume production, and the competitive nature of the PABX and small rural-exchange markets make these technologies economically attractive. The suppliers are not limited to Japanese, North American, and West European firms; Indian, South Korean, and Brazilian suppliers have been quite successful in gaining market share (1).…”

Section: Many Telecommunication and Development Researchers Have Fallmentioning

confidence: 99%

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Integration, Telecommunication, and Development: Power in the Paradigms

Samarajiva¹,

Shields

1990

Journal of Communication

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BY c q -w w-c=onomk s e and po&ical) as urzpmbhnadc, new eseamb in relecontn#mfcaElond~lopme?#connburestotreat t e c b n d o g y a s~d a n d n e g & c t s &~o n a b e -=.The communication and development field, together with its elder sibling development economics, has undergone intense criticism and self-criticism in the past two decades (21,84,93). Claims have been made for the passing of an "old" paradigm and for the rise of a "new" one (85, 86); taking these claims at face value, many researchers have proceeded in the belief that the field has corrected course (e.g., 40; but cf. 49,66). But this uncritical acceptance neglects some basic questions: Why did the old paradigm take the particular form that it did? Why did it become dominant in that particular period? Have the contextual factors that gave rise to the old paradigm changed in the past two decades?The focus of this article is not communication and development as a whole (36, 37) but telecommunication and development] a new subfield that emerged around the same time as the publicly announced demise of the old paradigm. Its subject matter is the relation between telephones and associated interactive communication technologies and development. This new field can be distinguished from the preceding work on communication and development in regard to three aspects of the old paradigm that had come under intense criticism. First, instead of examining the content of communication, researchers in the field of telecommunication and development look at channels and networks of communication and their underlying technologies. Second, they focus on interactive communication media rather than on one-way media. Third, they shift the emphasis of development communication away from persuasion (43). Just as the radio symbolized one-way communication in the service of the topdown development so reviled by critics of the old paradigm, the telephone with its potential for interaction is seen to symbolize a new, more humane approach to communication in development.

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Section: Many Telecommunication and Development Researchers Have Fallmentioning

confidence: 99%

Section: Many Telecommunication and Development Researchers Have Fallmentioning

confidence: 99%

Integration, Telecommunication, and Development: Power in the Paradigms

Samarajiva¹,

Shields

1990

Journal of Communication

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Fundamental characteristics of multiple‐access schemes for satellite communication networks

Onozato

Saito

Teruya

1996

Electron. Comm. Jpn. Pt. I

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In multiple-access schemes for digital satellite communication, a collective arrangement is needed in which all the uncoordinated users m a y share a single sadlite channel. The slotted ALOHA scheme is basically a random access scheme where the time axis is slotted and each earth station transmits packets at random.In this paper, the stability issues of the slotted ALOHA scheme and its useful limits are discussed first. This gives the useful range of a basic type of random access scheme. Next, the instance conflict scheme is explained where multiple access according to the demands of various users is possible. This scheme can satisfy the basic requirements of the satellite channel according to the demand of various users.

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Fundamentals of Space Communications

Mohanty¹

1991

Space Communication and Nuclear Scintillation

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Satellite data networks for national development

Cited by 9 publications

References 12 publications

Integration, Telecommunication, and Development: Power in the Paradigms

Integration, Telecommunication, and Development: Power in the Paradigms

Fundamental characteristics of multiple‐access schemes for satellite communication networks

Fundamentals of Space Communications

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