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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| Format: | Thesis |
| Language: | English |
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2009
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| Online Access: | http://hdl.handle.net/10356/19559 |
| _version_ | 1811696838158319616 |
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| author | Qi, Tong |
| author2 | Kot, Chichung Alex |
| author_facet | Kot, Chichung Alex Qi, Tong |
| author_sort | Qi, Tong |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T07:45:43Z |
| format | Thesis |
| id | ntu-10356/19559 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:45:43Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-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 |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems Qi, Tong Interference rejection using adaptive filter for the DS-CDMA overlay system |
| title | 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_short | Interference rejection using adaptive filter for the DS-CDMA overlay system |
| title_sort | interference rejection using adaptive filter for the ds cdma overlay system |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems |
| url | http://hdl.handle.net/10356/19559 |
| work_keys_str_mv | AT qitong interferencerejectionusingadaptivefilterforthedscdmaoverlaysystem |