Optimization and efficient detection of primary synchronization signal for multi-beam satellite-LTE systems

Abstract

SUMMARYA new design of primary synchronization signal (PSS) sequences and an efficient detection algorithm for multibeam satellite long-term evolution (LTE) systems are investigated in this paper. First, a transmit-timing adjustment method is proposed to reduce the large time difference of arrival of received signals from different satellites. Then, using the particular subcarrier mapping scheme of LTE, original Zadoff-Chu sequences are generalized to obtain more candidate sequences with good correlation properties. Later on, choosing an optimal subset from these candidate sequences, new PSS sequences for seamless global coverage multi-beam satellite-LTE systems are obtained. Subsequently, an efficient synchronization and low complexity PSS detection algorithm using interference cancellation method is presented. Finally, simulation results verify the effectiveness of the proposed scheme.