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