Parallel Combined Spread Spectrum Error Analysis And Succesive Error Correction Method

Abstract

Traditional spread spectrum techniques provide a strong anti-interference capability but a relatively low transmission rate. This is addressed by the parallel combination spread spectrum technique which provides higher transmission efficiency, security, and spread gain. Nevertheless, the receiver of a parallel combined spread spectrum system requires to distinguish multiple spread spectrum sequences. Therefore, any reception errors are propagated in the receiver hence leading to a larger number of errors. Moreover, spread spectrum sequences with different mode values experience different probability of errors at the receiver. The existing analysis of the error location in the parallel combined spread spectrum is only an estimate after countless experiments. In this paper, we theoretically analyze the probability of correct discrimination of parallel combination spread spectrum with different modulus values. Furthermore, according to the probability analysis of correct discrimination therefore the parallel combination spread spectrum is improved. This significantly reduces the bit error rate of the system and improves the reliability only with a slight degradation of transmission efficiency.