Practical Blind Approach for Joint Detection and Parameter Assessment in Direct Sequence-Code Division Multiple Access Systems

摘要

In this paper, the blind code extraction of Direct Sequence-Code Division Multiple Access signals is considered based on independent component analysis (ICA), some propositions are defined in order to estimate the number of active users, to distinguish between correct and incorrect extracted codes, and also to determine the quality of detection along with the ICA-based blind detection procedure. These propositions are used to improve the performance of the ICA blind detection-based method. Principal component analysis and gaussian mixture model are employed as analyzing tools in proposed criteria. Experimental results show that the defined criteria are verified.