On channel estimation and equalization in TDS-OFDM based terrestrial HDTV broadcasting system

被引：37

作者：

Song, BW ^{[1
]}

Gui, L ^{[1
]}

Guan, YF ^{[1
]}

Zhang, WJ ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Image Commun & Informat Proc, Shanghai 200030, Peoples R China

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2005年 / 51卷 / 03期

基金：

中国国家自然科学基金;

关键词：

channel estimation; correlation; DMB-T; equalization; HDTV; interference cancellation; OFDM;

D O I：

10.1109/TCE.2005.1510485

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：

In TDS-OFDM (Time-Domain Synchronous Orthogonal Frequency Division Multiplexing) systems, pseudonoise (PN) sequences rather than cyclic prefixes are inserted as guard interval, between consecutive inverse discrete Fourier transformed (IDFT) symbol blocks. Since the PN sequences can also be used as training symbols, such system can provide higher spectrum efficiency. However, due to non-cyclic property of the signal, the simple channel estimation and equalization techniques for conventional cyclic prefixed OFDM (CP-OFDM) can not be applied to TDS-OFDM. In this paper, we propose a channel estimation and equalization method for TDS-OFDM. Channel estimation depends on time domain correlation and iterative interference cancellation techniques, while equalization is based on tail cancellation and cyclic restoration algorithm (TCCR). It is shown that our proposed method can provide satisfactoty performance in TDS-OFDM based terrestrial high-definition television (HDTV) broadcasting system.

引用

页码：790 / 797

页数：8

共 8 条

[1]

COLERI S, 2002, IEEE T BROADCASTING, V48

[2]

*ETSI, 1997, EN300744 ETSI

[3]

HSIEH M, 1998, IEEE T CONSUMER ELEC, V44

[4]

Huang DF, 2001, ICCE: 2001 INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS, DIGEST OF TECHNICAL PAPERS, P68, DOI 10.1109/ICCE.2001.935215

[5] A combined code acquisition and symbol timing recovery method for TDS-OFDM [J].

Wang, J ;

Yang, ZX ;

Pan, CY ;

Han, M ;

Yang, L .

IEEE TRANSACTIONS ON BROADCASTING, 2003, 49 (03) :304-308

[6]

YANG ZX, 2002, GLOBECOM, V1, P594

[7] Robust phase noise suppression scheme for TDS-OFDM-based digital television terrestrial broadcasting systems [J].

Zheng, ZW ;

Yang, ZX ;

Pan, CY ;

Zhu, YS .

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2004, 50 (02) :436-442

[8]

ZHENG ZW, 2003, VTC 2003 FALL, V2, P1229

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