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A Novel Enhanced Decision-Directed Channel Estimation Scheme in High-Speed Mobile Environments  

Ren, Yongzhe (부산대학교 전자전기컴퓨터공학과 통신시스템연구실)
Park, Dong Chan (부산대학교 전자전기컴퓨터공학과 통신시스템연구실)
Kim, Suk Chan (부산대학교 전자전기컴퓨터공학과)
Publication Information
Journal of Satellite, Information and Communications / v.10, no.1, 2015 , pp. 29-32 More about this Journal
Abstract
It has been a big trend of the convergence technologies about communication systems and vehicular industry to improve safety and convenience. To achieve a number of infotainment vehicular applications, vehicles should transmit information with high reliability. A robust and accurate channel estimation scheme is of great importance to achieve the goal. In this paper, we present a novel enhanced decision-directed channel estimation scheme called FADP (Frequency Averaging Data Pilot) for dynamic time-varying vehicular channels in IEEE 802.11p. We use linear averaging filtering in frequency domain, and utilize the correlation characteristic of the channels between the adjacent two data symbols, update the CR in time domain to get more accuracy. Finally, analysis and simulation results reveal that compared with exist schemes, the proposed scheme has a good performance in mean square error (MSE) and bit error rate (BER).
Keywords
Channel Estimation; WAVE; IEEE 802.11p; OFDM;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 오현서, "V2X 통신 기술 최근 동향 및 실용화 이슈", 한국통신학회지, 제 30권 11호, pp. 3-7, 2013.
2 홍대기, 강법주, "WAVE 시스템에서 미드엠블을 이용한 채널등화 방식", 한국정보통신학회논문지, 제 14권 10호, pp. 2215-2222, 2010.   DOI
3 Fernandez, J.A, "Performance of the 802.11p Physical Layer in Vehicle-to-Vehicle Environments," IEEE Transactions on, Vehicular Technology, vol. 61, no. 1, pp. 3-14, 2012.   DOI
4 Zijun Zhao, Xiang Cheng, Miaowen Wen, Liuqing Yang, and Bingli Jiao, "Constructed Data Pilot-Assisted Channel Estimators for Mobile Environments," IEEE Transactions on Intelligent transportation systems, vol. PP, no. 99, pp. 1-11, 2014.