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pro vyhledávání: '"Hwa-Young Um"'
Autor:
Edward J. Delp, Hwa Young Um
Publikováno v:
IPCCC
In wireless networks, secure multicast protocols are more difficult to implement efficiently due to the dynamic nature of the multicast group and the scarcity of bandwidth at the receiving and transmitting ends. Mobility is one of the most distinct f
Autor:
Hwa Young Um, Edward J. Delp
Publikováno v:
Security, Steganography, and Watermarking of Multimedia Contents
Selective encryption is a technique that is used to minimizec omputational complexity or enable system functionality by only encrypting a portion of a compressed bitstream while still achieving reasonable security. For selective encryption to work, w
Publikováno v:
ICECS
ICON
ICON
In this paper, we first describe the architecture of the base station (BS) in the CDMA mobile system (CMS) and then model one base station controller group (BSCG) as a queueing network. By using an analytic method for the given queueing network model
Publikováno v:
ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384).
We propose and analyze a quality-based admission control policy for the integration of voice and data in a CDMA cellular system. The data users are assigned a higher transmission power level over voice users to achieve a lower bit error rate but data
Autor:
Hwa-Young Um, Lim Soon-Yong
Publikováno v:
ISCC
In this paper we propose and analyze a quality-based admission control policy for the integration of voice and data in DS-CDMA system. The data users are assigned a higher transmission power level over voice users to achieve a lower bit error rate. T
Publikováno v:
Proceedings of ICUPC 97 - 6th International Conference on Universal Personal Communications.
We proposed a new traffic load shedding scheme which maximizes the throughput of traffic control by decreasing the hot spot's cell using the algorithm of minimum load cell selection (MLCS) and deployed control flow of calls to define the characterist
Publikováno v:
IEEE ATM '97 Workshop Proceedings (Cat. No.97TH8316).
The traffic control model based wireless ATM network which has a high speed and a broad range of quality of service (QoS) is used to support wireless multimedia services such as voice, video, and data file. One critical reason for applying ATM techno
Autor:
Byung-Han Ryn, Hwa-Young Um
Publikováno v:
Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications.
We present the system performance when the voice traffic is transmitted to the base station controller (BSC) from the base station transceiver subsystem (BTS) in the International Mobile Telecommunication-2000 (IMT-2000) network. We first describe th
Publikováno v:
Proceedings of APCCAS'96 - Asia Pacific Conference on Circuits & Systems; 1996, p342-345, 4p
Autor:
Hwa-Young Um, Soon-Yong Lim
Publikováno v:
Proceedings Third IEEE Symposium on Computers & Communications ISCC'98 (Cat No98EX166); 1998, p365-369, 5p