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|Title: ||An investigation in broadband network : admission control, power allocation, subcarrier assignment|
|Other Titles: ||Guan yu kuan pin wu xian wang zhong jie ru kong zhi, gong lü he zi zai bo fen pei de yan jiu|
|Authors: ||Sun, Yu Ting (孫玉婷)|
|Department: ||Department of Electronic Engineering|
|Degree: ||Master of Philosophy|
|Issue Date: ||2008|
|Publisher: ||City University of Hong Kong|
|Subjects: ||Broadband communication systems -- Design and construction.|
|Notes: ||CityU Call Number: TK5103.4 .S86 2008|
v, 98 p. : ill. 30 cm.
Thesis (M.Phil.)--City University of Hong Kong, 2008.
Includes bibliographical references (leaves 91-97)
|Abstract: ||Broadband wireless network providing multiple services is
investigated in this thesis. The quality of service is provided by a
developed prediction algorithm employing Bayesian Neural
Network. The algorithm referred as QoS predictor is evaluated
based on a formerly developed Tri-Threshold Bandwidth
Reservation Call Admission Control Scheme. The predictor helps
to improve the resource management of high speed packet
networks, thus saving the cost and bandwidth. When considering
about the transmission level, orthogonal carrier combined with
multiple access is a scheme enabling high–speed data, video, and
multimedia communication and is used by a variety of commercial
broadband systems. Moreover, OFDMA facilitates relaying in
multiple hop networks, which provides cooperative diversity.
Algorithms of subcarrier allocation and power allocation based on
multiuser OFDMA relaying network are proposed in this thesis.
Numerical results are conducted to show the merits in terms of
throughput achievement of the proposed algorithm—optimal-BER and water-filling over uniform power allocation. It is verified that
by employing optimal-BER, not only improved aggregate
throughput is achieved, but also the BER requirements can be
satisfied under adaptive modulations.|
|Online Catalog Link: ||http://lib.cityu.edu.hk/record=b2340562|
|Appears in Collections:||EE - Master of Philosophy |
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