Complexity Effective Sequential Detection of Secondary Synchronization Signal for 5G New Radio Communication Systems

Abstract

In this article, a complexity-effective secondary synchronization signal (SSS) detection scheme is presented for fifth-generation (5G) new radio (NR) communication systems, which uses a gold sequence for SSS generation by multiplying two different m-sequences. By taking advantage of good autocorrelation property between cyclic-shifted versions of m-sequence, the search space of SSS hypothesis testing is reduced by decoupling the detection of two m-sequences. The combination of such a sequential strategy with maximum likelihood detection criterion facilitates low-complexity and reliable SSS detection in the 5G NR system. Both numerical and simulation results are presented to justify the effectiveness of the proposed detection scheme. It is demonstrated from presented results that the proposed SSS detector achieves a considerable complexity reduction while incurring slight performance loss, compared to existing SSS detectors.