An Improved Integer Frequency Offset Estimator using the P1 Symbol for OFDM System

This paper suggests an improved integer frequency offset (IFO) estimation scheme using P1 symbol for orthogonal frequency division multiplexing (OFDM) based the second generation terrestrial digital video broadcasting (DVB-T2) system. Proposed IFO estimator is designed by a low-complexity blind IFO estimation scheme, which is implemented with complex additions. Also, we propose active carriers (ACs) selection scheme in order to prevent performance degradation in blind IFO estimation. The simulation results show that under the AWGN and TU6 channels, the proposed method has low complexity than conventional method and almost similar performance in comparison with the conventional method.

Authors:

• Yong-An Jung
• Young-Hwan You

Keywords:

• OFDM
• DVB-T2
• P1 symbol
• ACs
• IFO.

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