Broadband Korea

노트 : This report was prepared by Tim Kelly, Vanessa Gray and Michael Minges. It is based on research carried out from 23 to 30 May 2002 as well as articles and reports noted in the document. The assistance of the Ministry of Information and Communication, particularly Sang-Hak Lee, was indispensable and highly appreciated. The assistance of colleagues within ITU is also noted particularly Nathalie Delmas, who formatted the report and created the cover. Both Jin-Kyu Jeong and Chinyong Chong provided detailed comments. The report would not have been possible without the cooperation of the many Korean organizations who offered their time to the reportís authors. The report is one of a series examining the Internet in developing nations. Additional information is available on ITUís Internet Case Study web page at http://www.itu.int/ITU-D/ict/cs/. (The rest omitted

Software defined radio : a system engineering view of platform architecture and market diffusion

Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2002.Includes bibliographical references (p. 179-181).As complexity and ambiguity in products and customer needs increase, existing companies are being forced toward new organizational models. New products require integrating knowledge across technologies, architectures, and functions in new ways, building product platforms that can adapt to changes in markets and product design throughout the product development process. In particular, the wireless telecommunications industry is plagued by multiple incompatible dominant second-generation standards, with each with separate migration paths to future third generation functionality. The high initial investments in spectrum and infrastructure, and corresponding switching costs, call out for a technological solution that can both evolve with the rapid advances in technology and potentially operates seamlessly across multiple incompatible networks to unify a highly fragmented system. In a system engineering context, this thesis investigates the use of software define radio technology (SDR) as a potential replacement for hardware solutions to the multiple air interface standard problem. This thesis investigates the role of product platform architectures in product market diffusion by studying the selection of appropriate system and product architectures, product market diffusion, and the formation of a system dominant design. Using software defined radio (SDR) technology in the wireless telecommunications industry as a case study, the emergence of SDR as a potential replacement for multiple mobile phone standards is investigated. Compared with interim compatibility solutions that combine multiple air interfaces through hardware. SDRs are an emerging technology that promises to combine multiple air-interfaces into a single wireless phone platform though software configuration. Market and organizational disruptions are determined, and how platform architecture concepts can be used to mitigate these disruptions. The history of the wireless telecommunications industry is presented to highlight the determinants of product and standards success in the wireless industry. The transition between first-generation (1G) wireless, second-generation (2G) wireless, and the interim high data rate second-generation (2.5 G) system currently being rolled out is discussed. Geographical differences in standards acceptance and the role of government policies are discussed. The strong network effects in the industry are illustrated by the late success of GSM technology in the United States market. The mode of technological standard interaction or competition is determined through the use of the Lotka-Volterra model of technological interaction and lessons learned applied to third generation systems. Plans for third generation (3G) wireless are presented, and the various transition paths from 2G to 3G are discussed. The challenges of transitioning between technologies (technological discontinuities) are highlighted through a discussion of the installed base of legacy equipment. Software defined radio (SDR) technology is presented, and a platform architecture is developed in the context of 3G market penetration. The use of appropriate flexible SDR system architectures in light of rapidly changing technological and market innovations is discussed.by Moise N. Solomon.S.M