In this thesis, we propose a modified MT-CDMA system, which can improve channel estimation accuracy by using transmit diversity of pilot signals. We not only expound the principles and structures of the system we proposed, but analyze its performance in slow Rayleigh fading channel environment. According to different ways to assign data symbols of transmitted signals, we have two different bit error rate results. At the same transmit power, the simulation results show that when we combine comb-type pilot signals of two parallel channels to estimate channel gains, we can recover the drawbacks of comb-type pilot arrangement, which can not perform well in frequency selective fading channel. Finally, the numerical results will be also shown.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0828104-165712 |
| Date | 28 August 2004 |
| Creators | Pan, Chi-Que |
| Contributors | Tsung-shian Liu, Chih-peng Li, Ben-shung Chow, Yung-fang Chen |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828104-165712 |
| Rights | off_campus_withheld, Copyright information available at source archive |
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