Joint Batch Implementation of Blind Equalization and Timing Recovery

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. 