一种M-ary扩频信号扩频序列集估计方法OACSTPCD

A spread spectrum code set estimation method based on sequential correlation detection is proposed for spread spectrum sequence set estimation of M-ary spread spectrum signal.The synchronous signal samples are divided,and the estimation of a certain element in the code set is obtained by iterating operation by using the correlation characteristics between the divided vectors.And then,the sample vector corresponding to this element is eliminated from the received signal vector set.The above steps are repeated to obtain an estimate of the spread spectrum code set in a sequential manner.Finally,the original signal is used to test each element of the code set,and the false elements in the code set are eliminated to get the final estimation result.This method can estimate the spread spectrum sequence set of M-ary spread spectrum signal,which is not limited to the type of spread spectrum code set.In addition,because the iterative operation of two-dimensional search and K-means clustering is avoided,the proposed method has a faster computing speed than the methods referred in literature.