Parameter estimation of DS-CDMA mobile communication
The parameter estimation is a very important issue in DS-CDMA mobile communication. Since all users share the same frequency and time resource during communications, the multiple-access interference (MAI) must be considered with great care. It may be due to that the users' signals are not tr...
| 主要作者: | |
|---|---|
| 其他作者: | |
| 格式: | Thesis |
| 语言: | English |
| 出版: |
2008
|
| 主题: | |
| 在线阅读: | http://hdl.handle.net/10356/13124 |
| _version_ | 1826110402433384448 |
|---|---|
| author | Liu, Hong. |
| author2 | Abdul Rahim Leyman |
| author_facet | Abdul Rahim Leyman Liu, Hong. |
| author_sort | Liu, Hong. |
| collection | NTU |
| description | The parameter estimation is a very important issue in DS-CDMA mobile communication.
Since all users share the same frequency and time resource during
communications, the multiple-access interference (MAI) must be considered
with great care. It may be due to that the users' signals are not truly orthogonal
after spreading. When the communication is in a near-far environment, the
users' power levels may vary widely. This would result in the performance degradation
of the conventional CDMA system. In order to overcome this problem,
several near-far resistant detectors were reported. And these methods require
the signature waveforms' timing information. However, for the asynchronous
CDMA systems, even in a friendly communication scheme, the users' timing
information is often not known and need to be estimated. |
| first_indexed | 2024-10-01T02:33:50Z |
| format | Thesis |
| id | ntu-10356/13124 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:33:50Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | ntu-10356/131242023-07-04T15:45:07Z Parameter estimation of DS-CDMA mobile communication Liu, Hong. Abdul Rahim Leyman School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Wireless communication systems The parameter estimation is a very important issue in DS-CDMA mobile communication. Since all users share the same frequency and time resource during communications, the multiple-access interference (MAI) must be considered with great care. It may be due to that the users' signals are not truly orthogonal after spreading. When the communication is in a near-far environment, the users' power levels may vary widely. This would result in the performance degradation of the conventional CDMA system. In order to overcome this problem, several near-far resistant detectors were reported. And these methods require the signature waveforms' timing information. However, for the asynchronous CDMA systems, even in a friendly communication scheme, the users' timing information is often not known and need to be estimated. Master of Engineering 2008-10-20T07:14:46Z 2008-10-20T07:14:46Z 1999 1999 Thesis http://hdl.handle.net/10356/13124 en 129 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Wireless communication systems Liu, Hong. Parameter estimation of DS-CDMA mobile communication |
| title | Parameter estimation of DS-CDMA mobile communication |
| title_full | Parameter estimation of DS-CDMA mobile communication |
| title_fullStr | Parameter estimation of DS-CDMA mobile communication |
| title_full_unstemmed | Parameter estimation of DS-CDMA mobile communication |
| title_short | Parameter estimation of DS-CDMA mobile communication |
| title_sort | parameter estimation of ds cdma mobile communication |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Wireless communication systems |
| url | http://hdl.handle.net/10356/13124 |
| work_keys_str_mv | AT liuhong parameterestimationofdscdmamobilecommunication |