상세정보
학술대회
Channel Estimation Based on Comb-Type Pilot Structure in OFDM System with Null Subcarriers
- 발행일
- 200709
- 출처
- Vehicular Technology Conference (VTC) 2007 (Fall), pp.1092-1096
- 초록
- This paper analyzes the degradation effect of null subcarriers in orthogonal frequency division multiplexing (OFDM) systems on the time-domain maximum likelihood (ML) estimation performance. The analysis is used as the basis for a proposal for a new channel estimation method that can overcome performance degradation caused by null subcarriers. The accuracy of the proposed channel estimation is guaranteed by using an interpolation of the estimated channel in the frequency domain that comes before the channel estimation in the time domain. © 2007 IEEE.
- KSP 제안 키워드
- Channel estimation(CE), Comb-type, Degradation effect, Estimation method, Maximum likelihood (ML) estimation, OFDM systems, Orthogonal frequency division Multiplexing(OFDM), estimation performance, frequency domain(FD), null subcarriers, performance degradation