教師資料查詢 | 類別: 期刊論文 | 教師: 李揚漢 Lee Yang-han (瀏覽個人網頁)

標題:Using Hierarchical Carrier Modulations in the Detection of Carrier Frequency Offset for OFDM Communications
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
語言英文
ISSN1727-2394
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
國別中華民國
公開徵稿
出版型式,電子版
相關連結
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