Time-Domain Estimation of Time-Varying Channels in OFDM Systems

被引：0

作者：

Chen, Shaoping ^{[1
]}

Dai, Guangfa ^{[1
]}

Rao, Wengui ^{[1
]}

机构：

[1] S Cent Univ Nationalities, Elect & Informat Engn Dept, Wuhan 430074, Peoples R China

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2010年 / E93B卷 / 01期

基金：

中国国家自然科学基金;

关键词：

time-domain channel estimation; OFDM; BEM; pilot design;

D O I：

10.1587/transcom.E93.B.154

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter deals with the time-domain estimation of time-varying channels in orthogonal frequency-division multiplexing (OFDM) systems. The general complex exponential basis expansion model (GCE-BEM) is used to capture the time variation of the channel within an OFDM block. The design criterion of optimal training for OFDM systems in time-varying channels is derived. This optimal training enables the complete elimination of the interference from data symbols and minimizes the noise effect on channel estimation. The design criterion can be used for both pilot symbol aided modulation (PASM) and superimposed training OFDM systems over time-varying channels.

引用

页码：154 / 157

页数：4

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