Synchronization apparatus in narrowband wireless communication system for IoT and method thereof

摘要

The present invention relates to a synchronization acquisition apparatus in a narrowband wireless communication system and a method thereof. According to the present invention, the synchronization acquisition apparatus for a wireless communication system includes: a receiving part receiving a transmission signal including a synchronization preamble of a length N (=M×L), which is formed by a combination between a first sequence of a length M and a second sequence of a length L, from a transmitter; a processing part detecting a reception signal vector including M reception signal components by applying a reception window of an M×L size to a reception signal; a calculation part calculating timing metric for synchronization detection based on a mutual correlation value between the reception signal components and the second sequence and a delay correlation value between M sequence elements in the first sequence; and an estimation part performing synchronization detection by estimating a time spot where the timing metric becomes maximum as a starting point of the reception signal. According to the present invention, the synchronization acquisition apparatus is capable of improving the signal detection and synchronization estimation performance of the narrowband wireless communication system, guaranteeing the transmission and reception performance of the system and enabling the efficient operation of an IoT terminal by using an improved synchronization preamble structure.