Systolic array implementation of the one-shot decorrelating detector used for mobile CDMA communications

A systolic array implementation of the one-shot decorrelating detector algorithm designed for Code-Division Multiple-Access (CDMA) spread spectrum communication systems used in mobile communications environments is developed. This detector has the advantage that it is near-far resistant, that is, it minimizes the interference effects that near-end users have on far-end users. However, its implementation requires the on-line inversion of the correlation matrix between the desired and interfering users. For this reason, a systolic computation approach is chosen to help solve the problem of fast on-the-fly matrix inversion. Performance of the proposed implementation is assessed via digital computer simulation. The implementation methodology presented here leads to VLSI implementation structure.