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Joint Batch Implementation of Blind Equalization and Timing Recovery

Bin Yang, Dalei Wang, and Ying Wu
1.Institute of Zhengzhou Information Science and Technology, Zhengzhou, Henan Province 450002, China

Abstract—In conventional design of a digital receiver, the timing recovery system and the equalizer are considered separately. Actually, the two processes are coupled and interacted. The paper proposes a batch scheme for jointly performing blind equalization and timing recovery, that embeds the timing recovery process inside the batch blind equalization algorithm. The proposed scheme adds the timing offset of sampling and interpolation filter in the objective function of constant modulus algorithm, iteratively updates the timing offset and equalizer coefficients in batch approach, thus achieves equalization, symbol timing error detector and timing recovery jointly. In this way, the timing recovery and the equalization processes can be coordinated. Simulation results show the performance of equalization and timing recovery. 

Index Terms—blind equalization, timing recovery, constant modulus, open-loop batch

Cite: Bin Yang, Dalei Wang, and Ying Wu, "Joint Batch Implementation of Blind Equalization and Timing Recovery" Journal of Communications, vol. 8, no. 7, pp. 449-455, 2013. doi:10.12720/jcm.8.7.449-455