A novel scheme for WSDM based on signal preprocessing

Abstract

A novel source signal preprocessing method and channel identification algorithm for blind separation were proposed in this paper. In this method, source signals were second-order cyclostationary(SoC) after preprocessing, and this feature was helpful for identifying channel and separating source signals effectively in receiving terminal. We call it pPSoCBSS which is the abbreviation for preprocessing second-order cyclostationary BSS algorithm. pPSoCBSS is a good scheme for Wireless Statistical Division Multiplexing (WSDM). It had three steps: a)source signals preprocessing; b)channel identification; c)source separation. Preprocessing signals has three advantages in identifying channel: more exactly, anti-noise effectively, and without loss in underdetermined case. mathematic analysis and extensive simulation results confirm the validity and high performance of the algorithm. Compared with related algorithms such as JADE and SOBI, pPSoCBSS enjoys better PI performance.