Interference rejection using adaptive filter for the DS-CDMA overlay system

Interference rejection using adaptive filter for the DS-CDMA overlay system

In Direct Sequence Code Division Multiple Access (DS-CDMA) overlay systems, the cross-interference between wideband CDMA users and narrowband users can be substantially reduced by using filtered spreading sequences as replacements of binary PN sequences. The reduction is obtained at the expense of t...

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Main Author: Qi, Tong
Other Authors: Kot, Chichung Alex
Format: Theses and Dissertations
Language:English
Published: 2009
Subjects:
DRNTU::Engineering::Electrical and electronic engineering::Electronic systems
Online Access:http://hdl.handle.net/10356/19559
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Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-19559
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spelling sg-ntu-dr.10356-195592023-07-04T15:30:48Z Interference rejection using adaptive filter for the DS-CDMA overlay system Qi, Tong Kot, Chichung Alex School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic systems In Direct Sequence Code Division Multiple Access (DS-CDMA) overlay systems, the cross-interference between wideband CDMA users and narrowband users can be substantially reduced by using filtered spreading sequences as replacements of binary PN sequences. The reduction is obtained at the expense of the degradation of multiple access capability of the CDMA users. The degradation gets even more serious for uplink receivers when the near-far problem arises. The adaptive detector introduced by Miller [13], proved to be effective for the near-far problem, is also applied here for the DS-CDMA overlay systems. Master of Engineering 2009-12-14T06:15:14Z 2009-12-14T06:15:14Z 1997 1997 Thesis http://hdl.handle.net/10356/19559 en Nanyang Technological University 93 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Electronic systems
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Electronic systems
Qi, Tong
Interference rejection using adaptive filter for the DS-CDMA overlay system
description In Direct Sequence Code Division Multiple Access (DS-CDMA) overlay systems, the cross-interference between wideband CDMA users and narrowband users can be substantially reduced by using filtered spreading sequences as replacements of binary PN sequences. The reduction is obtained at the expense of the degradation of multiple access capability of the CDMA users. The degradation gets even more serious for uplink receivers when the near-far problem arises. The adaptive detector introduced by Miller [13], proved to be effective for the near-far problem, is also applied here for the DS-CDMA overlay systems.
author2 Kot, Chichung Alex
author_facet Kot, Chichung Alex
Qi, Tong
format Theses and Dissertations
author Qi, Tong
author_sort Qi, Tong
title Interference rejection using adaptive filter for the DS-CDMA overlay system
title_short Interference rejection using adaptive filter for the DS-CDMA overlay system
title_full Interference rejection using adaptive filter for the DS-CDMA overlay system
title_fullStr Interference rejection using adaptive filter for the DS-CDMA overlay system
title_full_unstemmed Interference rejection using adaptive filter for the DS-CDMA overlay system
title_sort interference rejection using adaptive filter for the ds-cdma overlay system
publishDate 2009
url http://hdl.handle.net/10356/19559
_version_ 1772828434806865920

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