期刊論文
| 學年 | 102 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2013-09-01 |
| 作品名稱 | Using Hierarchical Carrier Modulations in the Detection of Carrier Frequency Offset for OFDM Communications |
| 作品名稱（其他語言） | |
| 著者 | Lee, Yang-Han; Tseng, Hsien-Wei; Lee, Wei-Chen; Yen, Liang-Yu; Hsiao, Yu-Lin; Wu, Jing-Shown; Tsao, Hen-Wai |
| 單位 | 淡江大學電機工程學系 |
| 出版者 | 新北市：淡江大學 |
| 著錄名稱、卷期、頁數 | 淡江理工學刊=Journal of Applied Science and Engineering 16(3), pp.287-294 |
| 摘要 | In this study, we use hierarchical modulation technology to estimate the carrier frequency of fset (CFO) caused by the Doppler effect; and hierarchical modulation has been implemented in the orthogonal frequency-division multiplexing (OFDM) system. Different threshold levels have been used to demodulate various bits of the hierarchical modulated symbols and it has the characteristic that the bit error rate (BER) of each set decision levels depends on the CFO extent. Consequently when a receiver signal suffers a CFO effect; this CFO extent can be estimated from its resulting BER curves. Pilot signals have been hierarchically modulated and used as the test signal in the simulation of OFDM system to estimate the CFO effect resulting from the movement of the mobile stations. The simulation result shows that the actual BER is higher than the mathematically analyzed BER for each decision level, which results in the overestimation of the CFO extent. |
| 關鍵字 | Carrier Frequency Offset (CFO); Hierarchical Modulation; Doppler Shift; OFDM |
| 語言 | en |
| ISSN | 1727-2394 |
| 期刊性質 | 國外 |
| 收錄於 | EI |
| 產學合作 | |
| 通訊作者 | Tseng, Hsien-Wei |
| 審稿制度 | 是 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/93530 ) |