Over-sampling basis expansion model aided channel estimation for OFDM systems with ICI

中国邮电高校学报(英文) ›› 2008, Vol. 15 ›› Issue (4): 7-7–1.doi:

Over-sampling basis expansion model aided channel estimation for OFDM systems with ICI

刘思杨,刘元安,王飞飞,XIE Gang,张然然

Key Laboratory of Universal Wireless Communications (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China

收稿日期:2008-05-02 修回日期:1900-01-01 出版日期:2008-12-30
通讯作者: 刘思杨

Over-sampling basis expansion model aided channel estimation for OFDM systems with ICI

LIU Si-yang, LIU Yuan-an, WANG Fei-fei, XIE Gang, ZHANG Ran-ran

Key Laboratory of Universal Wireless Communications (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China

Received:2008-05-02 Revised:1900-01-01 Online:2008-12-30
Contact: LIU Si-yang

摘要/Abstract

摘要：

The rapid variation of channel can induce the intercarrier interference in orthogonal frequency-division multiplexing (OFDM) systems. Intercarrier interference will significantly increase the difficulty of OFDM channel estimation because too many channel coefficients need be estimated. In this article, a novel channel estimator is proposed to resolve the above problem. This estimator consists of two parts: the channel parameter estimation unit (CPEU), which is used to estimate the number of channel taps and the multipath time delays, and the channel coefficient estimation unit (CCEU), which is used to estimate the channel coefficients by using the estimated channel parameters provided by CPEU. In CCEU, the over-sampling basis expansion model is resorted to solve the problem that a large number of channel coefficients need to be estimated. Finally, simulation results are given to scale the performance of the proposed scheme.

关键词:

OFDM,;ICI,;over-sampling;basis;expansion;model;(OBEM)

Abstract:

Key words:

OFDM;ICI;over-sampling basis expansion model (OBEM)

LIU Si-yang, LIU Yuan-an, WANG Fei-fei, XIE Gang, ZHANG Ran-ran

. Over-sampling basis expansion model aided channel estimation for OFDM systems with ICI[J]. Acta Metallurgica Sinica(English letters), 2008, 15(4): 7-7–1.

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Over-sampling basis expansion model aided channel estimation for OFDM systems with ICI

Over-sampling basis expansion model aided channel estimation for OFDM systems with ICI

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