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학술대회 Study on an Efficient Fractional Frequency Offset Estimation for OFDM Systems with Roll-Off Period
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저자
배재휘, 송진혁, 이제원, 최동준, 정준영, 허남호
발행일
201706
출처
International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2017, pp.1-3
DOI
https://dx.doi.org/10.1109/BMSB.2017.7986238
협약과제
17HR2100, 초고품질 UHD (UHQ) 전송 기술 개발, 허남호
초록
In this paper, we propose an efficient FFO(fractional frequency offset) estimation method for OFDM systems with RP(Roll-off period). RP is used to transmit more subcarriers in a limited bandwidth. Because neighboring OFDM symbols overlap in RP region, RP makes noises in CP(cyclic prefix) and degrades FFO estimation when Beek's method is used. The proposed method estimates FFO based on the Beek's method by detecting and eliminating RP from CP. We showed the test results of RP detection and explained the proposed FFO estimation.
키워드
FFO Estimation, OFDM System, Roll-off Period
KSP 제안 키워드
Cyclic prefix(CP), Estimation method, FFO Estimation, Frequency Offset Estimation, Limited bandwidth, OFDM systems, Roll-off Period, fractional frequency offset