Code acquisition in narrow-band interference using MUSIC with differential correlations

Abstract

In this paper we consider code timing acquisition in the direct-sequence code-division multiple access (DS-CDMA) communication system. Recently, traditional MUSIC utilizing differential correlations, DC-MUSIC, was proposed. Here DC-MUSIC is applied in narrowband interference and simulation results are presented. They indicate a clear improvement in acquisition performance compared to traditional MUSIC, conventional and differentially coherent acquisition schemes. In addition, DC-MUSIC is found to be a robust scheme due to the possibility of coherent integration also in the case of interference.