Abstract:

For the problem of performance degradation of the traditional subspace based user identification detector (UID) in multipath channels, based on the reconstructed signaling sequence matrix that includes the information of multipath channels, a new subspace based UID was proposed. The simulation result shows that the proposed UID will be ensure a low false alarm rate in both the multipath channels and heavy “near far effect” environments.

Key words: subspace, user identification detector, multipath, direct sequence code division multiple access