City University of Hong Kong
DSpace
 

CityU Institutional Repository >
3_CityU Electronic Theses and Dissertations >
ETD - Dept. of Electronic Engineering  >
EE - Master of Philosophy  >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2031/5432

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
關于寬頻無線網中介入控制, 功率和子載波分配的研究
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)
Type: thesis
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

Files in This Item:

File Description SizeFormat
abstract.html134 BHTMLView/Open
fulltext.html134 BHTMLView/Open

Items in CityU IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0!
DSpace Software © 2013 CityU Library - Send feedback to Library Systems
Privacy Policy · Copyright · Disclaimer