In order to mitigate the interferences between UWB systems and the existing systems, we will seek to search a variety of UWB pulse waveforms to meet Federal Communication Commission spectral mask(especially in UWB indoor environment) ,and make good use of rare spectral resources, i.e. improving spectral efficiency.
In AWGN channel and under good timing synchronization we analyze direct sequence ultra-wideband (DS-UWB) multiple access system in terms of the average bit error rate (BER) in accordance with user 1¡Fon the other hand, in indoor environment we simulate the indoor multi-path fading channel by means of modified S-V channel model, and on asynchronous condition analyze the average BER of direct sequence ultra-wideband (DS-UWB) multiple access system by Rake receiver.
Finally, we must seek to find some UWB pulse waveforms having good BER performance and those also meet the ¡§FCC Mask¡¨.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0908105-130411 |
| Date | 08 September 2005 |
| Creators | Huang, Sheng-qiang |
| Contributors | Chin-Der Wann, Hsiao-Hwa CHEN, Yu-Chao Tang |
| 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-0908105-130411 |
| Rights | not_available, Copyright information available at source archive |
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