Beamforming Based Receiver Scheme for DVB-T2 System in High Speed Train Environment

被引：21

作者：

Yang, Lihua ^{[1
]}

Ren, Guangliang ^{[1
]}

Zhai, Wantao ^{[1
]}

Qiu, Zhiliang ^{[1
]}

机构：

[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China

来源：

IEEE TRANSACTIONS ON BROADCASTING | 2013年 / 59卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Beamforming; DVB-T2; high-speed-train (HST) environment; multiple Doppler frequency offsets; CARRIER FREQUENCY OFFSET; OFDM; DIVERSITY; RECEPTION;

D O I：

10.1109/TBC.2012.2221612

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 this paper, the received signal from the different base stations (BSs) of the second generation of Terrestrial Digital Video Broadcasting (DVB-T2) in the high-speed-train (HST) scenario is modeled as a fast time-varying signal with the multiple Doppler frequency offsets. The interference caused by the multiple Doppler frequency offsets and the channel variations, and the signal to interference plus noise ratio of the received signal, are derived for the DVB-T2 receiver. The results of the theoretical analysis show that the interference greatly degraded the performance of the DVB-T2 system. To suppress the interference, we proposed a beamforming based receiver scheme for DVB-T2 system. By using the new signal processing scheme for the received signal vector from the antenna array, one can separate the received signal with the multiple Doppler frequency offsets into the multiple signals, each of which is with a single Doppler frequency offset. The separated signals are compensated by the corresponding Doppler frequency offsets and equalized by the estimated channel responses respectively, then combined into a signal to be demodulated. The results of the simulation show that the proposed scheme can effectively suppress the interference and greatly improve the performance of the DVB-T2 system in the HST environment.

引用

页码：146 / 154

页数：9

共 24 条

[11] EFFICIENT DIRECTION-FINDING METHODS EMPLOYING FORWARD-BACKWARD AVERAGING [J].

LINEBARGER, DA ;

DEGROAT, RD ;

DOWLING, EM .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1994, 42 (08) :2136-2145

[12] Spatial diversity technique for improvement of DTV reception performance [J].

Moon, SH ;

Kim, JY ;

Han, DS .

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2003, 49 (04) :958-964

[13] BER SENSITIVITY OF OFDM SYSTEMS TO CARRIER FREQUENCY OFFSET AND WIENER PHASE NOISE [J].

POLLET, T ;

VANBLADEL, M ;

MOENECLAEY, M .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1995, 43 (2-4) :191-193

[14] An efficient frequency offset estimation method with a large range for wireless OFDM systems [J].

Ren, Guangliang ;

Chang, Yilin ;

Zhang, Huining ;

Zhang, Hui .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2007, 56 (04) :1892-1895

[15] Maximum Likelihood Estimation of Time and Carrier Frequency Offset for DVB-T2 [J].

Rotoloni, Marco ;

Tomasin, Stefano ;

Vangelista, Lorenzo .

IEEE TRANSACTIONS ON BROADCASTING, 2012, 58 (01) :77-86

[16] MULTIPLE EMITTER LOCATION AND SIGNAL PARAMETER-ESTIMATION [J].

SCHMIDT, RO .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1986, 34 (03) :276-280

[17] Time-Varying Carrier Offsets in Mobile OFDM [J].

Talbot, Scott L. ;

Farhang-Boroujeny, Behrouz .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2009, 57 (09) :2790-2798

[18] Precise BER analysis of π/4-DQPSK OFDM with carrier frequency offset over frequency selective fast fading channels [J].

Tan, Peng ;

Beaulieu, Norman Q. .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2007, 6 (10) :3770-3780

[19] A Novel Doppler Frequency Offset Estimation Method for DVB-T System in HST Environment [J].

Yang, Lihua ;

Ren, Guangliang ;

Qiu, Zhiliang .

IEEE TRANSACTIONS ON BROADCASTING, 2012, 58 (01) :139-143

[20] On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming [J].

Yoo, T ;

Goldsmith, A .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2006, 24 (03) :528-541

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