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A Velocity-Adaptive Channel Estimation Scheme Using the Simple Zero-forcing Technique in the Frequency Domain  

Yu Takki (연세대학교 전기전자공학과 정보통신 연구실)
Park Goohyun ((주)삼성전자 네트워크 사업부)
Hong Daesik (연세대학교 전기전자공학과 정보통신 연구실)
Kang Changeon (연세대학교 전기전자공학과 정보통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.1A, 2006 , pp. 38-47 More about this Journal
Abstract
In this paper, we propose a velocity-adaptive channel estimation scheme using the simple zero-forcing technique in the frequency domain. Channel estimation is performed by removing frequency components that are higher than the maximum Doppler frequency in the received signal. The proposed scheme can be extended to the combined estimation scheme for channel coefficients and mobile velocity using one FFT/IFFT module. Simulation results show that the proposed scheme outperforms conventional schemes for a wide range of mobile velocities($3{\sim}300\;Km/h$). Finally, the MSE for the proposed channel estimation scheme is analyzed.
Keywords
channel estimation; time-varying channel; velocity estimation;
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