Adaptive algorithm for the Cholesky approximation calculation

摘要

It is to be without the complexity of the equipment to calculate the approximate Cholesky factor for the communication signal data detection for multi-user detection method used [Problems] code division multiple access in (CDMA) communication system, the complexity of the receiving system and I to mitigate the increase in manufacturing cost. Detection of the data is required in the solution [means] wireless communication system. I receive communication signals of a plurality of the (r). Is modeled using a linear system requiring a matrix inversion of the (34), a solution for estimating data communications signal which it receives the (r) of (d). I want to calculate the (B and A) multiple columns or rows of the approximate Cholesky factor. And to calculate the difference of the line between the difference or column between the calculation Zumi. If difference was calculated is equal to or less than the threshold, the columns or rows of later, calculated by column or row of calculation Zumi before that. It is estimated using the approximate Cholesky factor data communication signal received in (r) and (d).