Browse > Article
http://dx.doi.org/10.5909/JBE.2008.13.5.565

Channel Estimation in E-OCR for T-DMB System  

Park, Sung-Ik (Broadcasting System Research Department, ETRI)
Lim, Hyoung-Soo (Broadcasting System Research Department, ETRI)
Kim, Heung-Mook (Broadcasting System Research Department, ETRI)
Oh, Wang-Rok (Broadcasting System Research Department, ETRI)
Publication Information
Journal of Broadcast Engineering / v.13, no.5, 2008 , pp. 565-573 More about this Journal
Abstract
This paper proposes noise reduction methods to improve the channel estimation performance in Equalization On-Channel Repeater (E-OCR) for Terrestrial-Digital Multimedia Broadcasting (T-DMB) system. In the E-OCR for T-DMB system, the channel estimation is performed by the pilot signal extraction and the channel coefficient estimation. Since the performance of the channel estimation highly depends on the estimated channel coefficients whose accuracy is associated with the received signal-to-noise ratio (SNR), it is important to reduce noise existing at the estimated channel coefficients. To reduce such noise components, various noise reduction methods of the estimated channel coefficients based on the M -point weighted moving average are proposed. Computer simulations show that the proposed methods improve the estimation performance by more than 2 to 3 dB in terms of the symbol error rate after equalization.
Keywords
T-DMB; SFN; E-OCR; Channel Estimation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 박성익, 박소라, 음호민, 이용태, 김흥묵, "T-DMB의 SFN을 위한 등화형 동일채널 중계기," 방송공학회논문지, 제13권, 제3호, pp. 365-379, 2008년   과학기술학회마을   DOI
2 X. Wang, Y. Wu, J.-Y. Chouinard, S. Lu, and B. Caron, "A Channel Characterization Technique Using Frequency Domain Pilot Time Domain Correlation Method For DVB-T Systems," IEEE Trans. On Consumer Electronics, vol. 49, pp. 949-957, Nov. 2003   DOI   ScienceOn
3 김상진, "OFDM 시스템에서 이동평균필터를 이용한 LS 채널 추정 기법의 성능 분석," 연세대학교 대학원, 2005년
4 Y. Zhao and A. Huang, "A Novel Channel Estimation Method for OFDM Mobile Communication Systems Based on Pilot Signals and Transform-Domain Processing," in IEEE 47th Vehicular Technology Conference, vol. 3, pp. 2089-2093, May 1997
5 Anders Mattsson, "Single Frequency Networks in DTV," IEEE Transactions on Broadcasting, vol. 51, no. 4, pp 413-422, Dec. 2005   DOI   ScienceOn
6 Thomas M. Lehmann, Claudia Conner, Klaus Spitzer, "Survey: Interpolation Methods in Medical Image Processing," IEEE Trans. On Medical Imaging, vol. 18, No. 11, November 1999
7 ETSI, "Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) To Mobile, Portable And Fixed Receivers," ETSI EN 300 401 v1.3.3, Sept. 2001
8 Mackenzie, ABERT, and SET, "General description of laboratory tests," DTV Field Test Report in Brazil, July 2000
9 K. Salehian, M. Guillet, B. Carson, and A. Kennedy, "On-Channel Repeater for Digital Television Broadcasting Service," IEEE Transactions on Broadcasting, vol. 48, no. 2, pp. 97-102, June 2002   DOI   ScienceOn
10 Y.-S. Lee, H.-N. Kim, S. I. Park, and S. I. Lee, "Noise Reduction for Channel Estimation Based on Pilot-Block Averaging in DVB-T Receivers," IEEE Trans. On Consumer Electronics, vol. 52, no. 1, pp. 51-58, Feb. 2006
11 ETSI, "Digital Video Broadcasting (DVB); DVB Mega-Frame For Single Frequency Network (SFN) Synchronization," TS 101 191 v1.1.1, April 1997
12 Y.-T. Lee, S. I. Park, H. M. Eum. J. H. Seo, H. M. Kim, S. W. Kim, and J. S. Seo, "A Design of Equalization Digital On-Channel Repeater for the Single Frequency Networks," IEEE Trans. on Broadcasting, Vol. 53, No. 1, pp. 23-37, March 2007   DOI   ScienceOn
13 M. Hsieh and C. Wei, "Channel Estimation For OFDM Systems Based On Comb-Type Pilot Arrangement In Frequency Selective Fading Channels," IEEE Trans. On Consumer Electronics, vol. 46, no. 7, pp. 931-939, Jul. 1998