Parallel interference cancellation for carrier frequency offset in OFDM assisted with recursive least squares algorithm  

作　　者：GUAN Qing-yang ZHAO Hong-lin GUO Qing 

机构地区：[1]Communication Research Center, Harbin Institute of Technology, Harbin 150001, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第3期13-19,共7页中国邮电高校学报（英文版）

摘　　要：Parallel interference cancellation （PIC） interference due to the carrier frequency assisted with recursive least squares offset （CFO） in orthogonal frequency （RLS） algorithm is proposed to cancel the division multiplexing （OFDM） system. The proposed algorithm is composed of two stages, which are RLS scheme and PIC scheme. RLS scheme is selected to compensate the frequency offset in the time domain in the first stage, and the interference induced by residual frequency offset is canceled by the PIC scheme in the frequency domain in the second stage. The result of bit error rate （BER） shows that its performance is robust for cancellation as comparison criteria, even though the frequency offset is 0.45. The 16QAM constellation is also simulated to observe the improvements from the proposed suppression schemes.Parallel interference cancellation （PIC） interference due to the carrier frequency assisted with recursive least squares offset （CFO） in orthogonal frequency （RLS） algorithm is proposed to cancel the division multiplexing （OFDM） system. The proposed algorithm is composed of two stages, which are RLS scheme and PIC scheme. RLS scheme is selected to compensate the frequency offset in the time domain in the first stage, and the interference induced by residual frequency offset is canceled by the PIC scheme in the frequency domain in the second stage. The result of bit error rate （BER） shows that its performance is robust for cancellation as comparison criteria, even though the frequency offset is 0.45. The 16QAM constellation is also simulated to observe the improvements from the proposed suppression schemes.

关 键 词：OFDM CFO RLS PIC 

分 类 号：TN929.533[电子电信—通信与信息系统] TP271.7[电子电信—信息与通信工程]