上行MC-CDMA系统中基于DFT变换的信道估计-北京邮电大学学报.PDF

2004 12 Dec. 2004 27 6 Journal of Beijing University of Posts and Telecommunications ol. 27 No. 6 　　: 1007-5321(2004) 06-0064-05 - MC CDMA DFT 郑　侃,　曾国燕,　王文博 (, 100876) : ( - ) M C CDM A . ,( DFT) ,. . 　　: ; ; : TN929. 5　　　: A DFT-Based Channel Estimation for Uplink MC-CDMA ,　 - ,　 - ZHENG Kan ZENG Guo yan WANG Wen bo ( Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China) : - Abstract Proposes a novel channel estimation algorithm for multi carrier code ( - ) . division multiplex access MC CDMA systems on the uplink With reasonable constraint and the assistant of special-designed pilot sequence for each user, the discrete fourier transform ( DFT) -based uplink channel estimation algorithm can achieve good estimation accuracy without sacrificing much system capacity. Simulation results show the good performances of this method. Key words: orthogonal frequency division multiplexing; channel estimation; uplink (OFDM) MC-CDMA, [1] ,. , , . ,. MC-CDMA - , MC CDM A ,. , ,. TDD- : 2003-12-10 : “863”( 2003A : 　( 1974— ) ,,. E-mail: zkan@ buptnet. edu. cn ( 1965— ) ,,,. - : @ . . E mail wbwang bupt edu cn 　 6 　: -