Achieving Secondary Synchronization for downlink in the Long Term Evolution standard

This paper describes the way synchronization is achieved in the Long Term Evolution (LTE) standard. It focuses on the detection of the Secondary Synchronization Signal (SSS), which is a key signal, along with the Primary Synchronization Signal (PSS), used to obtain synchronization. In the description of the detection algorithm, three major steps must take place: determining the possible positions of the SSS sequence relative to the PSS, processing the sequence and calculating a threshold in order to validate the detection and extract system synchronization parameters.