Impulse burst position detection and channel estimation schemes for OFDM systems

被引：7
|
作者：
Rinne, J [1 ]
Hazmi, A [1 ]
Renfors, M [1 ]
机构：
[1] Tampere Univ Technol, Inst Commun Engn, Tampere, Finland
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2003年 / 49卷 / 03期
关键词：
channel estimation; DVB-T; impulsive noise; OFDM;
D O I：
10.1109/TCE.2003.1233769
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：
Recently, a new method for compensating the effects of impulse noise in OFDM systems has been presented in [1]. It is shown that in the A WGN case, the method can effectively cancel the impulse noise. However in the time frequency selective channel further measures are needed. The purpose of this paper is to present an enhanced channel estimation scheme for the standard method to overcome its sensitivity to the time-frequency selective channel estimates. The scheme uses the impulse free pilots to estimate the corrupted ones. Three different alternatives are discussed. Their performances in mean squared error (MSE) versus Doppler frequency are studied analytically. Bit error rate ratio (BER) simulations results are given, in the cases of SFN hilly terrain static and mobile channels. Additionally, results on simple practical impulse burst position detection method are also presented.
引用
收藏
页码：539 / 545
页数：7
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