Joint OFDM Synchronization Algorithm Based on Special Training Symbol

Abstract

A new training symbol with special structure is proposed aimed at the synchronization problem of orthogonal frequency division multiplexing (OFDM). Being different from many classical algorithm, the training symbol has special phase rotation relationship in the frequency domain. Based on this structure, a new joint symbol timing and frequency synchronization algorithm is presented. In the New algorithm, frequency offset estimation is characteristic of large estimation range and high accuracy. At the same time, timing synchronization can produce a sharp peak, through which we can find where the OFDM symbol starts. The simulation results show that the performance of the synchronization algorithm proposed here is better than that of conventional methods.