Blind adaptive multiuser detection

Abstract

-The,decorrelating,detector and,the linear minimum mean-squate,error,(MMSE) detector,are known,to he effective strategies to counter,the presence,of multiuser,interference in code-division multiple-access channels; in particular, those multiuser,detectors provide,optimum,near-far resistance. When training data sequences are available, the MMSE multiuser detector can,he implemented adaptively without knowledge of signature,waveforms,or received,amplitudes. This paper,introduces,an adaptive,multiuser,detector which,converges,(for any initialization) to the MMSE detector without requiring training sequences. This blind multiuser detector requires no more knowledge,than does the conventional,single-user receiver: the desired user’s signature,waveform,and its timing. The proposed blind multiuser,detector is made,robust with respect to imprecise knowledge,of the received signature waveform of the user of interest. Zndex TermsMultiuser detection, multiple-access channels,