DefinePK

Abstract

Channels typically introduce amplitude and phase distortions as well as inter symbol interference (ISI) to the received signals. Therefore, timing recovery is crucial when sampling the received waveforms at the correct instants. Specifically, we consider an iterative timing recovery technique which incorporates the error correction codes (ECC) owing to its robustness against poor signal-to-noise ratios (SNRs). These gains, however, are purely derived under the assumption of the additive white Gaussian noise (AWGN). The bit error rate (BER) performance of iterative timing recovery methods may suffer in non-Gaussian channels where impulsive noise exists. In light of this, we propose a novel suppression method to remove impulsive noise from the non-Gaussian channel before feeding the received signal to the iterative timing recovery unit. Results demonstrate that the proposed scheme can perform well even in non-Gaussian channels.