Low Complexity Time-Domain Channel and Delay Spread Estimation for OFDM Systems

被引：8

作者：

Zhu, Mo ^{[1
]}

Awoseyila, Adegbenga B. ^{[1
]}

Evans, Barry G. ^{[1
]}

机构：

[1] Univ Surrey, Ctr Commun Syst Res, Guildford GU2 7XH, Surrey, England

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2010年 / 56卷 / 04期

关键词：

OFDM; channel estimation; timing synchronization; delay spread estimation; FREQUENCY SYNCHRONIZATION;

D O I：

10.1109/TCE.2010.5681087

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：

A low complexity time-domain channel estimation scheme for OFDM systems is presented. It uses a training symbol (preamble) to estimate the channel impulse response (CIR) in the presence of timing synchronization errors. Its computational complexity is much lower than that of the popular MMSE technique and this can be further reduced if there is prior knowledge of the channel delay spread. Consequently, channel delay spread estimation is also addressed by using threshold setting on the optimized CIR. Computer simulations show that the proposed scheme achieves near-ideal accuracy in quasi-static channels(1).

引用

页码：2170 / 2177

页数：8

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