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Study on an Efficient Fractional Frequency Offset Estimation for OFDM Systems with Roll-Off Period
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- Authors
- JaeHwui Bae, JinHyuk Song, Jewon Lee, Dong-Joon Choi, Joon-Young Jung, Namho Hur
- Issue Date
- 2017-06
- Citation
- International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2017, pp.1-3
- Language
- English
- Type
- Conference Paper
- Abstract
- 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.
- KSP Keywords
- Cyclic prefix(CP), Estimation method, FFO Estimation, Frequency Offset Estimation, Limited bandwidth, OFDM systems, Roll-off Period, fractional frequency offset