標題: | Blind recursive tracking of carrier frequency offsets in MC-CDMA systems |
作者: | Chien, FT Kuo, CCJ 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
公開日期: | 2005 |
摘要: | A blind recursive algorithm to effectively update the carrier frequency offset (CFO) vector in a multicarrier code-division multiple-access (MC-CDMA) system is studied in this research. The recursive relation is developed based on the expectation maximization (EM) algorithm with a quadratic constraint. This new perspective enables the use of linear estimation theory to deal with the blind CFO estimation problem, leading to an analytic CFO estimate in closed-form. The multiple access interference (MAI) is mitigated using the second order statistics of the interference-plus-noise vector, which can also be updated in a recursive manner under the EM formulation. Finally, we verify the effectiveness of the proposed algorithm with computer simulation. |
URI: | http://hdl.handle.net/11536/17552 |
ISBN: | 0-7803-9414-3 |
期刊: | GLOBECOM '05: IEEE Global Telecommunications Conference, Vols 1-6: DISCOVERY PAST AND FUTURE |
起始頁: | 1446 |
結束頁: | 1450 |
顯示於類別: | 會議論文 |