Browse > Article
http://dx.doi.org/10.5909/JBE.2010.15.1.122

AT-DMB Reception Method with Eigen-space Beamforming Algorithm  

Lee, Jae-Hong (Dept. of Electronics Computer Eng. Hanyang University)
Choi, Seung-Won (Dept. of Electronics Computer Eng. Hanyang University)
Publication Information
Journal of Broadcast Engineering / v.15, no.1, 2010 , pp. 122-132 More about this Journal
Abstract
AT-DMB system has been developed to increase data rate up to double of conventional T-DMB in the same bandwidth while maintaining backward compatibility. The AT-DMB system adopted hierarchical modulation which adds BPSK or QPSK signal as enhancement layer to existing DQPSK signal. The enhancement layer signal should be small enough to maintain backward compatibility and to minimize the coverage loss of conventional T-DMB service coverage. But this causes the enhancement layer signal of AT-DMB susceptible to fading effect in transmission channel. A turbo code which has improved error correction capability than convolutional code, is applied to the enhancement layer signal of the AT-DMB system for compensating channel distortion. However there is a need for other solutions for better reception of AT-DMB signal in receiver side without increasing transmitting power. In this paper, we propose adaptive array antenna system with Eigen-space beamforming algorithm which benefits beamforming gain along with diversity gain. We analyzed the reception performances of AT-DMB system in indoor and mobile environments when this new smart antenna system and algorithm is introduced. The computer simulation results are presented along with analysis comments.
Keywords
Eigen-space beamforming; smart antenna; AT-DMB; diversity gain; hierarchical modulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 S. Haykin, Adaptive Filter Theory, 3rd ed., Prentice Hall, 1996.
2 S. Kim, Y. Kim, J. Lim, C. Ahn, U. Choi, and B. Soe, "Design of the Channel Estimation Algorithm for Advanced Terrestrial DMB System," IEEE Transactions on Broadcasting, vol. 54, no. 4, pp. 816-820, Dec. 2008.   DOI   ScienceOn
3 Ji-Hyun Kim, Ji-Bong Lee, Hyoung-Nam Kim, Hyoungsoo Lim, Jong Soo Lim "Coherent Detection for T-DMB Receivers in Hierarchical Modulation Mode," IEEE Trans. on Consumer Electronics Vol.53, no.2, pp.294-299, May 2007.   DOI   ScienceOn
4 F. A. Dietrich and W. Utshick, "Maximum Ratio Combining of Correlated Rayleigh Fading Channels With Imperfect Channel Knowledge," IEEE Communications Letter, vol. 7, No. 9, pp. 419-421, Sep. 2003.   DOI   ScienceOn
5 이상진, 이상운, 양규태, 임종수 "AT-DMB 시스템을 위한 계층 변조 방식의 성능분석" 방송공학회논문지 제14권 제4호 pp. 509-517, 2009년 8월.   과학기술학회마을
6 한국정보통신기술협회, TTAK.KO-07.0070, 고전송률 지상파 디지털 멀티미디어 방송(AT-DMB) 송수신 정합, 2009. 6.
7 S. Choi and D. Shim, "A Novel Adaptive Beamforming Algorithm for a Smart Antenna System in a CDMA Mobile Communication Environment," IEEE Transaction on Vehicular Technology, vol. 49, No. 5, pp. 1793-1806, Sep. 2000.   DOI   ScienceOn
8 현승헌, 최승원 "적응형 배열 안테나를 위한 감소차 수고유 공간 빔형성 알고리즘" 통신학회논문지 Vol. 33, No. 3 pp. 336-341, 2008년 4월.   과학기술학회마을
9 이재홍, 배재휘, 최승원 "계층변조 기반 AT-DMB의 성상비에 따른 LAB 테스트 결과 분석" 방송공학회논문지 제14권 제6호 pp. 721-732, 2009년 11월.   과학기술학회마을   DOI
10 J. Choi and S. Choi, "Diversity Gain for CDMA Systems Equipped With Antenna Array," IEEE Transaction on Vehicular Technology, vol. 52, No. 3, pp. 723-725, May 2003.