Parallel Interference Cancellation for Carrier Frequency Offset in OFDM Assisted with Recursive Least Squares algorithm

doi:10.1016/S1005-8885(09)60473-8

Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (3): 13-19.doi: 10.1016/S1005-8885(09)60473-8

Parallel Interference Cancellation for Carrier Frequency Offset in OFDM Assisted with Recursive Least Squares algorithm

关庆阳

哈尔滨工业大学通信技术研究所

收稿日期:2009-08-31 修回日期:2010-01-20 出版日期:2010-06-30 发布日期:2010-06-29
通讯作者: 关庆阳 E-mail:guan_qy@163.com
基金资助:
国家级.国家自然科学基金

Parallel Interference Cancellation for Carrier Frequency Offset in OFDM Assisted with Recursive Least Squares algorithm

Received:2009-08-31 Revised:2010-01-20 Online:2010-06-30 Published:2010-06-29

摘要/Abstract

摘要：

Parallel interference cancellation (PIC) assisted with recursive least squares (RLS) algorithm is proposed to cancel the interference due to the carrier frequency offset (CFO) in orthogonal frequency 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

Abstract:

Key words:

OFDM, CFO, RLS, PIC

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Parallel Interference Cancellation for Carrier Frequency Offset in OFDM Assisted with Recursive Least Squares algorithm

Parallel Interference Cancellation for Carrier Frequency Offset in OFDM Assisted with Recursive Least Squares algorithm

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