Residual symbol timing offset estimation for DRM+ system with cyclic delay diversity (original) (raw)

Abstract

In this study, we propose an enhanced residual symbol timing offset(STO) estimation scheme in an orthogonal frequency division multiplexing (OFDM) based digital radio mondiale plus (DRM+) system with cyclic delay diversity (CDD). By proper selection of the amount of cyclic delay and pilot subset partitioning, a robust and low-cost residual STO estimator is derived. By computer simulation, the proposed estimator is shown to benefit from properly designed delay parameter and pilot subsets.